Post on 29-May-2018
transcript
Washington Rare Plant Care and Conservation 1
Washington Rare Plant Care and Conservation
Rare Plant Monitoring
2017 Annual Report
SUMMARY
Washington Rare Plant Care and Conservation’s rare plant monitoring project harnesses the
energy and expertise of citizen scientists to provide critically‐needed information on the status
of Washington State’s rare plant species. We partner with the Washington Natural Heritage
Program to update information on known occurrences of rare plants on public lands in
Washington. Citizen scientists visit rare plants populations and report on their status and the
condition of the habitat where they occur. Field reports submitted by rare plant monitors are
provided to the Washington Natural Heritage Program, and to federal, state, and local land
managers to inform short‐term and long‐term conservation practices.
In 2017, 132 reports were completed for sites throughout the state, mostly on public lands.
Monitors found the rare plant species at 62% of the sites. Eight sites found by volunteers
represented potentially new occurrences tracked by the Washington Natural Heritage Program.
Rare Care trained 29 new volunteers in 2017 and 110 volunteers participated in the project
statewide.
INTRODUCTION
Washington Rare Plant Care and Conservation (Rare Care) engages citizen scientists to monitor
rare native plants at sites across Washington State in partnership with the Washington Natural
Heritage Program (WNHP). WNHP lists 336 plant species as endangered, threatened, or
sensitive to decline in Washington State, and an additional 169 species as review species. Many
of the 3,500 occurrences of rare plants tracked by WNHP are visited very infrequently;
therefore, the statuses of these occurrences are unknown. Rare plant monitoring addresses this
information gap by engaging volunteers to visit and report on the rare plant occurrences and
School of Environmental and Forest Sciences College of the Environment
Washington Rare Plant Care and Conservation 2
the condition of the habitats in which they reside. This report provides a summary of the
accomplishments for the rare plant monitoring project in 2017.
Objectives for the program include:
Providing critical and more frequent data to support scientists and land managers in
identifying trends in plant‐population changes, testing assumptions about climate
change and other anthropomorphic impacts on native plants, and understanding
ecosystem interactions,
Producing key reports and information for managers of public lands to aid in
managing sensitive plant species,
Helping to evaluate national conservation strategies and approaches and
Generate stories to spark an increased interest in the value of native plants among
the public.
At the start of each year, volunteers select one or more occurrences of rare plants to monitor
from a list of priorities developed by Rare Care. Rare plant occurrences on the priority list are
mostly located on public lands. Volunteers are provided with information about the occurrence,
including the contact person at the public agency where the population occurs, mapping of the
occurrence, and information from previous surveyors. Volunteers are responsible for
researching access to the occurrence, how to identify the target species, and when the optimal
time for conducting the site visit. Information collected during the site visit includes population
size and phenology, characteristics of the habitat, location of plants at the site, invasive species,
pollinators, and management concerns.
Volunteers submit field reports and
maps to Rare Care, which are
provided to WNHP and to public
agencies responsible for conserving
these populations. Through WNHP,
these data are available to scientists
and land managers working on
conservation issues and making land
use decisions across the state and
the nation.
The pink blooms of the snowball cactus (Pedicactus nigrispinus) nestle
among the dense black‐tipped spines of the cactus. This population was
monitored to assess impacts of recent wildfires. Photo by Barbara
Varnum‐Finney.
Washington Rare Plant Care and Conservation 3
Volunteers participating in the project are required to have previous experience identifying
native plants in the field. In addition, Rare Care volunteers demonstrate a strong interest in
native plant conservation and are required attend a 1‐day training session to learn the
monitoring protocols.
2017 PRIORITIES
Rare Care develops a list of potential sites to be monitored each season based on a set of
priorities developed in conjunction with WNHP and managers at partnering agencies. The
highest priority are given to 1) monitoring occurrences specifically requested by land managers
of public agencies where rare plant populations occur and 2) Rare Care’s focus species. Focus
species are those that Rare Care designate in order to complete the monitoring of all of their
occurrences on public lands in a five‐year time frame.
High priority is also given to monitoring occurrences whose records in the WNHP database had
not recently been updated. Within this group, higher emphasis is placed on species considered
to be threatened or endangered under WNHP’s ranking system; therefore, these sites are
selected if they have not been monitored in the past five years. For other species, sites are
selected if they have not been monitored within the past 10 years in western Washington and
Oregon goldenaster (Heterotheca oregona), shown in foreground, was a 2017 focus species. It occurs on cobble bars
along rivers and streams in the Cascade and Olympic Mountains. Photo by Niall Dunne.
Washington Rare Plant Care and Conservation 4
the past 20 years in central and eastern Washington. Priority is also placed on monitoring
occurrences that were not found by Rare Care volunteers in previous years. After three
unsuccessful attempts have been made to locate an occurrence, Rare Care considers the
occurrence to be extirpated and will no longer include it on the list of monitoring priorities in
future years.
2017 ACCOMPLISHMENTS
Rare Care completeded 132 field reports on rare plant occurrences in 2017 (see Table 1). These
included 106 sites of know populations selected from Rare Care’s priority list, eight potentially
new sites discovered by volunteers during the field season and 18 generated as part of Rare
Care’s annual monitoring weekend. In addition,
a group of volunteers surveyed a parcel owned
by the Washington State Fish and Wildlife
Department in Klickitat County to identify rare
plants on the site, and one species was found.
The rare plant species was successfully relocated
at 73 of the known occurrences, and at an
additional two occurrences, volunteers were
uncertain of the ID of the species they found.
These occurrences will need to be revisited. Six
volunteers were unable to reach their site
because of challenging terrain or access
constraints. For these sites, volunteers provided
reports that include valuable access information
for future surveyors.
Sites were located across Washington State on federal, state, and local public lands as well as a
couple of private properties (see Figure 1). Approximately 67 percent of the sites were on
federal land and 35 percent were on state lands (some sites occurred on two or more
jurisdictions). They included sites in the North Cascades and Olympic National Parks, all
National Forests in Washington except Kaniksu National Forest, Bureau of Land Management
lands, three National Wildlife Refuges (Turnbull, Conboy Lake, Saddle Mountain), Hanford
Reach National Monument, Yakima Training Center, Joint Base Lewis‐McChord, Washington
Department of Natural Resources lands (including NCRAs, NAPs, and state forests and trust
lands), seven Wildlife Areas managed by Washington State Department of Fish and Wildlife
(Asotin Creek, Chief Joseph, Lt, Murray, Crab Creek, Colockum, Klickitat and Columbia Basin),
The small annual bristle‐flowered collomia (Collomia
macrocalyx) was one of four species monitored at the
Yakima Training Center. Photo by Richard Johnson.
Washington Rare Plant Care and Conservation 5
and six State Parks (Battle Ground Lake, Columbia Hills, Federation Forest, Field Springs,
Horsethief Lake and Sun Lakes).
Figure 1. Land ownership of sites monitored by Rare Care volunteers in 2017.
The 2017 season started with a very wet spring, and consequently it was a good year for
annuals. Volunteers successfully relocated one of two white eatonella populations (Eatonella
nivea), a tiny annual that occurs on pea‐sized gravel in the Columbia Basin. Two of four dwarf
evening primrose populations (Eremothera pygmaea) were found, as was a population of
beaked cryptantha (Cryptantha rostellata) and bristle‐flowered collomia (Collomia macrocalyx).
However, miner’s candle (Cryptantha scoparia) was not successfully relocated in 2017, and Rare
Care will make another attempt at this population in 2018
Rare Care also continued to focus on species and populations impacted by recent wildfires.
Most of these sites occurred in central Washington from Klickitat County north to Chelan
County. They included populations of Columbia milk‐vetch (Astragalus columbianus), pauper
milk‐vetch (Astragalus misellus var. pauper), Snake River Cryptantha (Cryptantha spiculifera),
tufted evening‐primrose (Oenethera cespitosa ssp. cespitosa), snowball cactus (Pediocactus
nigrispinus), fuzzytongue penstemon (Penstemon eriantherus var. whitedii) and Thompson’s
clover (Trifolium thompsonii). In all instances except for the Snake River Cryptantha, the
population was relocated and hundreds to thousands of plants were observed. The Snake River
U.S. Forest Service
Bureau of Land Management
U.S. Fish and Wildlife Service
U.S. Department of Defense
National Park Service
U.S. Corps of Engineers
Washington Department of Fish and Wildlife
Washington Department of Natural Resources
Washington State Parks and Recreation
Washington Department of Transportation
Private Land
Municipality
Public Utility District
Washington Rare Plant Care and Conservation 6
cryptantha population was determined to be
a mis‐identification, but a voucher specimen
should be collected from the population to
confirm this conclusion.
At each site, rare plant monitors also
collected valuable information on the
condition of the habitat in the vicinity of the
rare plant populations and noted potential
management concerns. Surveyors reported
invasive species at 53% of the sites (Table 2)
and reported potential land use and
management concerns at 41% of the sites
(Table 3).
Rare Care’s annual monitoring weekend occurred June 2‐4, 2017 in the Asotin Creek Wildlife
Area and Umatilla National Forest in Blue Mountains of Washington. This region of the state is
infrequently botanized due to its remoteness from population centers; therefore, the event
offered an opportunity to focus on species rarely monitored by Rare Care. Nineteen volunteers
joined Rare Care staff and interns and botanists from the US Forest Service and WNHP over the
three‐day weekend, revisiting 13 known occurrences representing nine rare plants. Four
occurrences of Arthur’s milk‐vetch (Astragalus arthurii) were successfully relocated and
documented to contain populations from 7 to thousands of individuals. We also visited four
Rollins’ desert‐parsley (Lomatium rollinsii) sites where populations ranged in size from 40 to
more than 5,000. Other species monitored included tufted evening‐primrose (Oenethera
cespitosa ssp. cespitosa), stalk‐leaved monkeyflower (Erythranthe patula), and Snake River
daisy (Erigeron disparipilus). All of these species were successfully located and had healthy
populations of hundreds to thousands of plants. Finally, two populations of Idaho gooseberry
(Ribes oxyacanthoides var. irriguum) were revisited, and while one population was successfully
relocated and found to contain 91 plants, the other population appeared to be a mis‐
identification.
It is commonly observed that rare plants tend to cluster, and with so many observer in the field
during the monitoring weekend, it is not surprising that the group identified and documented
five new populations of rare plants during the weekend. These included three new Snake River
daisy populations, which may be more abundant that records suggest, and one population each
of Rollins’ desert‐parsley and wax current (Ribes cereum var. colubrinum). The Snake River daisy
populations were found on rocky, shallow soils along ridgelines and typically held hundreds to
White eatonella (Eatonella nivea), an annual found in the
Columbia basin, only occurs in Washington on sites with
pea‐sized gravel derived from basalt. Photo by Julia Bent.
Washington Rare Plant Care and Conservation 7
thousands of plants. The new Rollins’ desert‐
parsley population was found within an
Arthur’s milk‐vetch population, and while
only nine plants were found, there are likely
more in the area. The wax current was
abundant along a drainage of the Asotin
Creek Wildlife Area.
Rare Care volunteers documented three
other new populations from around
Washington in 2017. A volunteer discovered
an undocumented population of 26
spleenwort‐leaved goldthread (Coptis
aspleniifolia) in the Mt Baker‐Snoqualmie National Forest while on route to a different
population of the same species. In Klickitat County, two volunteers found a population of
common bluecup (Githopsis specularioides) while hiking in the Klickitat Wildlife Area. Finally,
volunteers documented a large population of Bolander’s linanthus (Leptosiphon bolanderi)
while conducting a reconnaissance survey of a new property acquisition for the Klickitat Wildlife
Area.
VOLUNTEER CONTRIBUTIONS Rare Care’s citizen scientists provide invaluable contributions to conserving rare plant biodiversity.
For many populations, the site visits made by volunteers represent the only time these population
were visited and assessed in recent decades. Land managers rely on the valuable information that
volunteers document in their field reports to manage and protect these sensitive species and their
habitats. In 2017, 110 volunteers devoted 3,319 hours to rare plant monitoring statewide. This
includes hours dedicated to training, preparation and planning, field work and report writing.
Rare Care offered two trainings for volunteers in 2017, one in Seattle and one in Pasco. The
trainings were attended by 29 new volunteers and six returning volunteers who were seeking a
refresher on the protocol. Rare Care also offered an orienteering training for volunteers that was
taught by The Mountaineers.
Rare Care volunteers Barbara Varnum‐Finney and Susan
Varnum hike up a ridge in the Blue Mountains to monitor a
population of (Astragalus arthurii) during Rare Care’s annual
monitoring weekend. Photo by Wendy Gibble.
Washington Rare Plant Care and Conservation 8
ADDENDUM TO THE 2016 MONITORING RESULTS
Rare Care received one additional monitoring reports from a volunteer after the 2016 Annual
Report was finalized (Table 4). With this report, the total number of occurrences monitored in 2016
was 143.
LEFT: Volunteers at the February 25, 2017 training in Seattle. Joe Arnett, WNHP botanist, assisted with the training
(pictured at right end of the top row). Photo by Jennifer Youngman. RIGHT: Volunteers at the March 4, 2017 training in
Pasco, WA. Photo by Wendy Gibble.
Table 1. Rare plant monitoring results for 2017.
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Actaea elata var. elata 14 S 7/18/2017 Yes 96Cape Horn Conservancy, Columbia River Gorge
National Scenic Area
PVTUUU,
USAFS
Actaea elata var. elata 24 S 7/23/2017 Yes 27 Battle Ground Lake State Park ST SPR
Agoseris elata 15 S 8/30/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Allium campanulatum 3 T 7/31/2017 No Naches RD, Okanogan‐Wenatchee NF USAFS
Arabis olympica 2 R1 8/5/2017 No Hood Canal RD, Olympic NF USAFS
Astragalus arthurii 12 S 6/2/2017 Yes 2200 Chief Joseph Wildlife Area, Pomeroy RD, Umatilla NFST DFW,
USAFS
Astragalus arthurii 15 S 6/3/2017 Yes 7 Chief Joseph Wildlife Area, Pomeroy RD, Umatilla NFST DFW,
USAFS
Astragalus arthurii 18 S 6/4/2017 Yes 1,000s Chief Joseph Wildlife Area ST DFW
Astragalus arthurii 22 S 6/3/2017 Yes 135 Chief Joseph Wildlife Area ST DFW
Astragalus columbianus 25 S 4/26/2017 Yes 5037 Bureau of Land Management Spokane District USABLM
Astragalus columbianus 29 S 5/2/2017 NoYakima Training Center, Bureau of Land Management
Spokane District
USADOD,
USABLM
Astragalus misellus var.
pauper30 S 4/22/2017 Yes 330
Lt Murray Wildlife Area, Bureau of Land Management
Spokane District
ST DFW,
USABLM
Bolandra oregana 3 T 5/22/2017 No Washougal Oaks NAP ST DNR
Botrychium ascendens 6 S 5/25/2017 No Darrington RD, Mt Baker‐Snoqualmie NF USAFS
Calochortus macrocarpus var.
maculosus11 S 7/16/2017 Yes 744 Pomeroy RD, Umatilla NF USAFS
Calochortus macrocarpus var.
maculosus24 S 6/15/2017 Yes 1 Private land PVTUUU
Calochortus macrocarpus var.
maculosus27 S 6/15/2017
Site not
reachedBureau of Land Management Vale District USABLM
Campanula lasiocarpa 6 S 8/5/2017 No Darrington RD, Mt Baker‐Snoqualmie NF USAFS
Carex macrochaeta 1 T 8/26/2017Site not
reachedNorth Cascades National Park USANPS
Carex pauciflora 16 S 8/7/2017 YesSnoqualmie RD, Mt Baker‐Snoqualmie NF, Cle Elum
RD, Okanogan‐Wenatchee NFUSAFS
Carex pauciflora 16 S 8/7/2017 YesSnoqualmie RD, Mt Baker‐Snoqualmie NF, Cle Elum
RD, Okanogan‐Wenatchee NFUSAFS
Washington Rare Plant Care and Conservation 9
Table 1. Rare plant monitoring results for 2017 (continued).
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Chaenactis thompsonii 34 S 8/6/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Chaenactis thompsonii 34 S 8/6/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Chrysolepis chrysophylla var.
chrysophylla1 S 10/16/2017 No Mt Adams RD, Gifford Pinchot NF USAFS
Chrysolepis chrysophylla var.
chrysophylla1 S 10/16/2017 No Mt Adams RD, Gifford Pinchot NF USAFS
Chrysolepis chrysophylla var.
chrysophylla12 S 10/17/2017 No DNR South Puget Sound Region ST DNR
Chrysolepis chrysophylla var.
chrysophylla38 S 10/17/2017 No DNR South Puget Sound Region ST DNR
Cicuta bulbifera 20 S 8/22/2017 Yes 6 Little Pend Oreille River NAP ST DNR
Coeloglossum viride var.
virescens7 T 6/26/2017 No Tonasket RD, Okanogan‐Wenatchee NF USAFS
Collomia macrocalyx 9 T 5/8/2017 Yes 40 Yakima Training Center USADOD
Coptis aspleniifolia New4 S 6/23/2017 Yes 26 Skykomish RD, Mt Baker‐Snoqualmie NF USAFS
Corydalis aquae‐gelidae 15 T 8/24/2017 No Mt St Helens NVM, Gifford Pinchot NF USAFS
Corydalis aquae‐gelidae 20 T 7/20/2017 No Mt Adams RD, Mt St Helens NVM, Gifford Pinchot NF USAFS
Corydalis aquae‐gelidae 20 T 7/15/2017 Yes35
stemsMt Adams RD, Gifford Pinchot NF USAFS
Corydalis aquae‐gelidae 44 T 6/25/2017 Yes 5 Mt St Helens NVM, Gifford Pinchot NF USAFS
Corydalis aquae‐gelidae 45 T 6/26/2017 No Mt St Helens NVM, Gifford Pinchot NF USAFS
Corydalis aquae‐gelidae 53 T 6/21/2017Site not
reachedMt Adams RD, Gifford Pinchot NF USAFS
Cryptantha gracilis 11 S 4/28/2017 No Sun Lakes State Park ST SPR
Cryptantha leucophaea 17 T 5/1/2017 No Juniper Forest ACEC, Juniper Dunes EWA USABLM
Cryptantha leucophaea 45 T 5/20/2017 No Crab Creek Wildlife Area ST DFW
Cryptantha rostellata 16 T 5/26/2017 Yes ~1000 Badger Gulch NAP ST DNR
Cryptantha scoparia 4 S 4/28/2017 No Sun Lakes State Park ST SPR
Cryptantha spiculifera 28 S 6/17/2017 Yes 61 Bureau of Land Management ‐ Spokane District USABLM
Cryptantha spiculifera 35 S 5/15/2017 Yes 208 Bureau of Land Management Spokane District USABLM
Washington Rare Plant Care and Conservation 10
Table 1. Rare plant monitoring results for 2017 (continued).
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Cypripedium parviflorum 20 S 6/3/2017 Yes156
stemsBureau of Land Management ‐ Spokane District USABLM
Delphinium viridescens 20 T 7/21/2017 Yes 76 Wenatchee River RD, Okanogan‐Wenatchee NF USAFS
Delphinium viridescens 36 T 7/20/2017 No Cle Elum RD, Okanogan‐Wenatchee NF USAFS
Dryopteris cristata 2 S 7/21/2017 Yes 78 Sullivan Lake RD, Colville NF USAFS
Eatonella nivea 7 T 5/2/2017 Yes 219 Saddle Mountain NWR, Hanford ERP USAFWS
Eatonella nivea 9 T 5/2/2017 No Saddle Mountain NWR, Hanford ERP USAFWS
Epipactis gigantea None5 W 7/31/2017 Yes Olympic National Park USANPS
Epipactis gigantea None5 W 7/29/2017 Yes Olympic National Park USANPS
Eremothera pygmaea 14 S 6/3/2017 No Yakima Training Center USADOD
Eremothera pygmaea 24 S 5/6/2017 Yes 107Wahluke Slope, South Columbia Basin Wildlife Area,
Hanford ERPUSAFWS
Eremothera pygmaea 24 S 5/7/2017 Yes >500Wahluke Slope, South Columbia Basin Wildlife Area,
Hanford ERPUSAFWS
Eremothera pygmaea 3 S 5/10/2017 No Sun Lakes State Park ST SPR
Erigeron disparipilus 6 S 6/2/2017 Yes 1,450 Fields Spring State Park ST SPR
Erigeron disparipilus New4 S 6/3/2017 Yes 800 Asotin Creek Wildlife Area, Pomeroy RD, Umatilla NFST DFW,
USAFS
Erigeron disparipilus New4 S 6/2/2017 Yes 425 Chief Joseph Wildlife Area ST DFW
Erigeron disparipilus New4 S 6/4/2017 Yes 100s Chief Joseph Wildlife Area ST DFW
Eriophorum viridicarinatum 1 S 7/14/2017 No Sullivan Lake RD, Colville NF USAFS
Erythranthe patula 10 T 6/4/2017 Yes5,000‐
10,000Asotin Creek Wildlife Area ST DFW
Erythranthe suksdorfii 5 S 4/28/2017 Yes 1,000s Sun Lakes State Park ST SPR
Eurybia merita 7 T 7/21/2017 Yes 180 Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Fritillaria camschatcensis 3 T 6/13/2017 No Darrington RD, Mt Baker‐Snoqualmie NF USAFS
Fritillaria camschatcensis 8 T 7/8/2017 Yes 2 Morning Star NRCA ST DNR
Gentiana glauca None5 S 8/8/2017 Yes 22 Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Geum rivale 5 S 8/12/2017 Yes 111 Sullivan Lake RD, Colville NF USAFS
Githopsis specularioides 15 S 6/8/2017 No Bald Hill NAP ST DNR
Githopsis specularioides New4 S 5/17/2017 Yes 200 Klickitat Wildlife Area ST DFW
Washington Rare Plant Care and Conservation 11
Table 1. Rare plant monitoring results for 2017 (continued).
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Heterotheca oregona 7 S 9/9/2017 No Federation Forest State Park ST SPR
Heterotheca oregona 9 S 8/14/2017 Yes 700 Hood Canal RD, Olympic NF USAFS
Iliamna longisepala 101 S 6/29/2017Site not
reachedWenatchee River RD, Okanogan‐Wenatchee NF USAFS
Iliamna longisepala 9 S 7/16/2017 No Bureau of Land Management Spokane District USABLM
Impatiens noli‐tangere 3 T 7/21/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Lasthenia glaberrima 1 T 7/10/2017 NoColumbia Hills State Park, Columbia River Gorge
National Scenic Area
ST SPR,
USAFS
Leptosiphon bolanderi 10 S 5/17/2017 Yes 40,000 Klickitat Wildlife Area ST DFW
Leptosiphon bolanderi New4 S 6/17/2017 Yes 100s Klickitat Wildlife Area ST DFW
Lobelia dortmanna None5 T 7/15/2017 Yes Olympic National Park USANPS
Lobelia dortmanna None5 T 7/26/2017 Yes Olympic National Park USANPS
Lobelia kalmii 2 E 8/23/2017Site not
reachedYakima Training Center USADOD
Lomatium laevigatum 13 T 3/27/2017 Yes 88 Horsethief Lake, Columbia Hills State Park ST SPR
Lomatium rollinsii 13 T 6/4/2017 Yes >5,000 Chief Joseph Wildlife Area ST DFW
Lomatium rollinsii 16 T 6/2/2017 Yes 1,000s Pomeroy RD, Umatilla NF USAFS
Lomatium rollinsii 21 T 6/2/2017 Yes 40 Asotin Creek Wildlife Area ST DFW
Lomatium rollinsii 21 T 6/3/2017 Yes 76 Asotin Creek Wildlife Area ST DFW
Lomatium rollinsii New4 T 6/4/2017 Yes 9 Chief Joseph Wildlife Area ST DFW
Lomatium serpentinum 4 S 4/17/2017 No Mill Creek Project, US Army Corps of Engineers USACOE
Lycopodium dendroideum 10 S 10/7/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Lycopodium dendroideum 3 S 10/7/2017 No Mt Baker RD, Mt Baker‐Snoqualmie NF USAFS
Muhlenbergia glomerata 3 S 7/21/2017 Yes >120 Sullivan Lake RD, Colville NF USAFS
Oenothera cespitosa ssp.
cespitosaNone5 S 5/15/2017 Yes 700 Bureau of Land Management Spokane District USABLM
Oenothera cespitosa ssp.
marginata6 T 6/17/2017 Yes 18 Bureau of Land Management Spokane District USABLM
Oenothera cespitosa ssp.
marginata7 T 6/3/2017 Yes 675 Asotin Creek Wildlife Area ST DFW
Orobanche californica spp.
grayanaNone5 E 8/10/2017 Yes
500‐
1000Klickitat Canyon NRCA, Conboy Lake NWR
ST DNR,
USAFWS
Washington Rare Plant Care and Conservation 12
Table 1. Rare plant monitoring results for 2017 (continued).
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Orthocarpus bracteosus 9 T 7/24/2017 Yes 1356 Mt Adams RD, Gifford Pinchot NF USAFS
Parnassia palustris var.
neogaea14 S 7/24/2017 Yes 1 Hood Canal RD, Olympic NF USAFS
Pediocactus nigrispinus 30 S 5/6/2017 Yes 292 Bureau of Land Management Spokane District USABLM
Pediocactus nigrispinus 6 S 5/27/2017 Yes >500 Colockum Wildlife Area ST DFW
Pellaea breweri 8 S 8/25/2017 Yes594
stemsCle Elum RD, Okanogan‐Wenatchee NF USAFS
Pellaea breweri 9 S 8/18/2017 No Hood Canal RD, Olympic NF USAFS
Penstemon eriantherus var.
whitediiNone5 NR 5/15/2017 Yes Bureau of Land Management Spokane District USABLM
Penstemon wilcoxii 6 T 7/10/2017 No Mt Adams RD, Gifford Pinchot NF USAFS
Perideridia oregana 3 S 7/17/2017 Yes 580 Lacamas Lake Regional Park LOCCTY
Platanthera chorisiana 12 T 8/24/2017 No Morning Star NRCA ST DNR
Platanthera chorisiana 13 T 8/9/2017 Yes 12 Morning Star NRCA ST DNR
Platanthera chorisiana 3 T 8/16/2017 Yes 10 Skykomish RD, Mt Baker‐Snoqualmie NF USAFS
Polemonium pectinatum 43 T 5/29/2017 Yes 14 Bureau of Land Management ‐ Spokane District USABLM
Potamogeton obtusifolius 6 S 8/26/2017 Yes 8 San Juan County Land Bank PVTUUU
Potentilla glaucophylla var.
perdissecta3 S 8/13/2017 No Chopaka Mountain NAP ST DNR
Potentilla jepsonii 1 R1 8/14/2017 Yes 227 Chopaka Mountain NAP ST DNR
Potentilla nivea 4 S 8/14/2017 Yes 100 Chopaka Mountain NAP ST DNR
Ranunculus triternatus 13 E 3/30/2017Site not
reachedKlickitat Wildlife Area ST DFW
Ribes cereum var.
colubrinumNew4 E 6/2/2017 Yes
numero
usAsotin Creek Wildlife Area ST DFW
Ribes oxyacanthoides ssp.
irriguum15 T 6/2/2017 Yes 91 Fields Spring State Park ST SPR
Ribes oxyacanthoides ssp.
irriguum24 T 6/2/2017 No Pomeroy RD, Umatilla NF USAFS
Rotala ramosior None5 T 7/29/2017 No Conboy Lake NWR USAFWS
Salix candida 1 T 7/14/2017 Yes85‐95
stemsSullivan Lake RD, Colville NF USAFS
Washington Rare Plant Care and Conservation 13
Table 1. Rare plant monitoring results for 2017 (continued).
Species NameEO
Num1State
Status2 Visit Date Species Found
Pop. Size3 Managed Area Owner
Salix pseudomonticola 2 S 7/14/2017 Yes55
stemsSullivan Lake RD, Colville NF USAFS
Salix sessilifolia 1 S 5/23/2017 Yes1,000
stemsEdgewater Park LOCCTY
Silene douglasii var.
monantha15 NR 7/26/2017 Uncertain 101 Table Mountain / Greenleaf Peak NRCA ST DNR
Silene spaldingii 61 T 7/21/2017 Yes 18 Turnbull NWR USAFWS
Silene spaldingii 62 T 7/21/2017 No Turnbull NWR USAFWS
Spiranthes porrifolia 22 S 8/16/2017 No Frenchman's Bar Regional Park LOCCTY
Synthyris pinnatifida var.
lanuginosa8 S 8/11/2017 Yes 20 Hood Canal RD, Olympic NF USAFS
Tauschia hooveri 17 S 3/17/2017 Yes 3,000 Bureau of Land Management Spokane District USABLM
Tauschia hooveri 18 S 3/25/2017 Yes2,000‐
3,750Bureau of Land Management Spokane District USABLM
Trifolium thompsonii 1 T 6/23/2017 Yes 67,000 Entiat RD, Okanogan‐Wenatchee NF USAFS
Trillium parviflorum 20 S 5/23/2017 Yes 1,500 Joint Base Lewis McChord USADOD
Trillium parviflorum 23 S 5/17/2017 Yes 550 Joint Base Lewis McChord USADOD
Trillium parviflorum 41 S 4/25/2017 Yes >3,000 Joint Base Lewis McChord USADOD
Veratrum insolitum 1 E 7/12/2017 Uncertain 64DNR Southeast Region, Columbia River Gorge National
Scenic Area
ST DNR,
USAFS
Notes:1. EO num is the element occurrence number assigned to the site by the Washington Natural Heritage Program.
2. State Status: E = endangered, R1 = review species (group 1), R2 = reivew species (group 2), S = sensitive, T = threatened,
X = possibly extinct or extirpated from Washington.
3. Population size estimate represents individuals unless otherwise noted.
4. Potentially new site that may not be in WNHP database.
5. Site identified by land owner or other party and may not be in WNHP database.
Washington Rare Plant Care and Conservation 14
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Actaea elata var. elata 24 Yes ST SPR Hedera helix
Hedera helix was prevalent on the ground layer and
appeared that it could affect space available to other
plants.
Astragalus arthurii 12 YesST DFW,
USAFS
Bromus tectorum, Poa bulbosa,
Tragopogon dubius, Hypericum
perforatum
Astragalus arthurii 15 YesST DFW,
USAFScheat grass nearby
Astragalus arthurii 18 Yes ST DFWBromus tectorum, Tragopogon
dubius
B. tectorum in a few scattered patches. Scattered
individuals of T. dubius .
Astragalus columbianus 25 Yes USABLMBromus tectorum, Poa bulbosa,
Draba verna
There is a severe invasion of Bromus tectorum that has
completely filled in the habitat and poses a continuous fire
hazard for the native species present. Draba verna and
Poa bulbosa is also present in all areas surveyed.
Astragalus misellus var.
pauper30 Yes
ST DFW,
USABLMBromus tectorum B. tectorum at lower elevation
Bolandra oregana 3 No ST DNR
Geranium lucidum, Lapsana
communis, Erodium cicutarium,
Rubus bifrons, Trifolium
subterraneum, Bromus
commutatus, Polygonum
cuspidatum, Hedera helix, other
non‐native grasses
Increased pressure from invasive weeds. Geranium
lucidum especially competing on good dripping rock faces,
but also others. These may compete not just for space but
also water.
Botrychium ascendens 6 No USAFS
Leucanthemum vulgare, Digitalis
sp., Hypericum sp., Ranunculus
repens
Calochortus macrocarpus
var. maculosus11 Yes USAFS
Tragopogon dubius, Bromus
tectorum, Lactuca serriolaNone in great numbers.
Washington Rare Plant Care and Conservation 15
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Calochortus macrocarpus
var. maculosus24 Yes PVTUUU
Croton setiger, Centaurea
solstitialis, Linaria dalmatica,
Bromus secalinus
Large patches of Centaurea solstialis & Bromus secalinus
Campanula lasiocarpa 6 No USAFSIce caves move annually, disturbance and land use threats
due to heavy human foot traffic.
Chrysolepis chrysophylla
var. chrysophylla12 No ST DNR
A lot of nonnative annuals along easement road up from
Stetson Lake.
Chrysolepis chrysophylla
var. chrysophylla38 No ST DNR Lots of non‐native annuals and grasses along easement.
Collomia macrocalyx 9 Yes USADOD Bromus tectorumBromus tectorum abundant, but much reduced in the one
place where C. macrocalyx was found.
Corydalis aquae‐gelidae 20 Yes USAFS
Hypericum perforatum,
Leucanthemum vulgare, Cirsium
spp.
Cryptantha gracilis 11 No ST SPR Bromus tectorumBromus tectorum grows densely throughout the area of
the survey, likely to the exclusion of other species.
Cryptantha leucophaea 17 No USABLM Bromus tectorum
Cryptantha leucophaea 45 No ST DFW
Bromus tectorum, Sisymbrium
altissimum, Agropyron sp.,
Ulmus pumila, Draba verna
Except for abundant cheatgrass, habitat in good shape.
Cryptantha rostellata 16 Yes ST DNR Bromus tectorum, Poa bulbosa
Cryptantha scoparia 4 No ST SPR Bromus tectorum
Bromus tectorum is flourishing this season throughout the
area of the survey, possibly to the exclusion of other
species, at the very least, making it difficult to see
germinating plants.
Cryptantha spiculifera 28 Yes USABLM Bromus sp.
Washington Rare Plant Care and Conservation 16
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Cryptantha spiculifera 35 Yes USABLM Bromus tectorum Bromus tectorum thick in areas of the lower slopes.
Cypripedium parviflorum 20 Yes USABLMSome unidentified thistle species nearby. Mullein and
other weeds in adjacent field.
Delphinium viridescens 36 No USAFSVerbascum thapsus, Cirsium
arvense
Although not in the talus slope or in the tiny aspen grove,
the amount of mullein and Canada thistle scattered
throughout the forest all the way up to the site was truly
astonishing. These seem to have, post fire, become
common components of the understory, even in the
unroaded areas.
Eatonella nivea 7 Yes USAFWSBromus tectorum, Erodium
circutarium
The Bromus tectorum at these two sites does not seem to
be invading the habitat of the rare plant.
Eatonella nivea 9 No USAFWSBromus tectorum, Salsola tragus,
Erodium circutarium
The area has been overrun with B. tectorum , which has
spread into and stabilized the sandy/gravelly habitat. As a
result, little of the preferred habitat remains. Also the
southeast facing slopes are now choked with dried out
Salsola koli (Russian thistle).
Epipactis gigantea None Yes USANPS Iris pseudacorus, Mysotis sp.Non‐native species introduced in a few areas by
landscaping on private property inholdings.
Eremothera pygmaea 14 No USADOD Bromus sp. Profusion of Bromus species.
Eremothera pygmaea 24 Yes USAFWS Bromus tectorum Common and widespread
Eremothera pygmaea 24 Yes USAFWSBromus tectorum, Sisymbrinum
sp., Salsola tragus
Eremothera pygmaea 3 No ST SPRBromus tectorum, Bromus
hordeaceus
Bromus tectorum found in area across the lake from
Intepretive Center. Bromus hordeaceus found throughout
site.
Erigeron disparipilus 6 Yes ST SPR
Bromus tectorum, Poa Bulbosa,
Tragopogon dubius, Lactuca
serriola
These species were present at weed infested sites
adjacent to better quality habitat with the rare plant.
Erigeron disparipilus New YesST DFW,
USAFS
Poa bulbosa, Convolvulus
arvensis, Tragopogon dubuis
Washington Rare Plant Care and Conservation 17
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Erythranthe patula 10 Yes ST DFW
Sisymbrium altissimum, Dipsacus
fullonum, Tragopogon dubius,
Thlaspi arvense, Geranium
carolinianum (?), Cynoglossum
officinale, Bromus tectorum, Poa
bulbosa, small annual brome,
Cerastium glomeratum, Myosotis
stricta, Galium aparine, non‐
native Veronica, Lactuca serriola,
Erodium cicutarium, Onopordum
acanthium, Bromus japonicus
Numerous weedy species dominate much of the suitable
habitat.
Erythranthe suksdorfii 5 Yes ST SPR Bromus tectorumThe greatest concentration is on the shore across the lake
from the Interpretive Center.
Eurybia merita 7 Yes USAFS Lactuca muralis A few Lactuca muralis , not a big concern
Fritillaria camschatcensis 3 No USAFS Geranium robertianum
Githopsis specularioides New Yes ST DFWPoa bulbosa, Bromus tectorum,
small brome
Heterotheca oregona 9 Yes USAFSHypericum perforatum, Plantago
lanceolata, Lotus corniculatusInvasives were present in relatively small numbers.
Iliamna longisepala 9 No USABLMBromus tectorum, Clematis
vitalba, Sisymbrium altissimum
Lasthenia glaberrima 1 NoST SPR,
USAFSRubus sp., Bromus sp.
Leptosiphon bolanderi 10 Yes ST DFW Poa bulbosa, Bromus tectorum
Washington Rare Plant Care and Conservation 18
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Lomatium laevigatum 13 Yes ST SPRBromus tectorum, Bromus
hordeaceus, Rubus bifrons
Invasives present but vertical surfaces seem to minimize
extent of ability to displace. Non‐natives and/or invasive
species threats include overgrown blackberry (Rubus
armeniacus ) displacing species in rocky habitats via
competition and shading.
Lomatium rollinsii 13 Yes ST DFW
Bromus tectorum, Onopordum
acanthium, Sisymbrium
altissimum, Tragopogon dubius,
Verbascum thapsus
The areas of shallow, rocky/sandy soil were dominated by
Bromus tectorum . Target plant not present in these
conditions. The Onopordum acanthium population is
small but needs to be controlled.
Lomatium rollinsii 16 Yes USAFSBromus tectorum, Hypericum
perforatum, Tragopogon dubius
Lomatium rollinsii 21 Yes ST DFWBromus tectorum, Centaurea
solstitialis
Lomatium rollinsii 21 Yes ST DFWTragopogon dubius, Conium
maculatum
A few nearby, but Conium maculatum thick in canyon
bottom
Lomatium rollinsii New Yes ST DFWBromus tectorum, Tragopogon
dubiusScattered
Lomatium serpentinum 4 No USACOE
Cynoglossum officinale, Bromus
tectorum, Tribulus terrestris,
Phalaris arundinacea, Conium
maculatum
Lycopodium dendroideum 3 No USAFS
Hypericum perforatum,
Tanacetum sp., Digitalis
purpurea, Verbascum thapsus,
Rubus laciniatus, Rubus bifrons
Oenothera cespitosa ssp.
cespitosaNone Yes USABLM Bromus tectorum Thick in areas of the lower slopes
Washington Rare Plant Care and Conservation 19
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Oenothera cespitosa ssp.
marginata7 Yes ST DFW
Poa bulbosa, Bromus tectorum,
Onopordum acanthium,
Tragopogon dubius
Orobanche californica
spp. grayanaNone Yes
ST DNR,
USAFWS
Hieracium caespitosum,
Ventenata dubia, other small
annual grasses (not bromes or
poa), Aira sp.
Parnassia palustris var.
neogaea14 Yes USAFS Nonnative grasses
Pediocactus nigrispinus 30 Yes USABLM Bromus tectorum
Pediocactus nigrispinus 6 Yes ST DFW Bromus tectorum
Penstemon eriantherus
var. whitediiNone Yes USABLM Bromus tectorum
Perideridia oregana 3 Yes LOCCTY
Taeniatherum caput‐medusae,
Holcus lanatus, Prunella vulgaris,
Rumex acetosella, Cytisus
scoparius, Rubus bifrons
Many invasive annuals within the balds. Some Cytissus
scoparius and Rubus discolor along bald edges.
Polemonium pectinatum 43 Yes USABLM Bromus tectorum Rare
Ribes cereum var.
colubrinumNew Yes ST DFW
Conium maculatum , Poa
bulbosa, Bromus tectorum
Ribes oxyacanthoides ssp.
irriguum15 Yes ST SPR
Taraxacum officinale, Verbascum
thapsus
Ribes oxyacanthoides ssp.
irriguum24 No USAFS
Bromus inermis, Poa bulbosa,
Dianthus armeria, Dactylis
glomerata, Bromus tectorum,
Circium arvense
Rotala ramosior None No USAFWS Phalaris arundinaceae
Salix sessilifolia 1 Yes LOCCTYTanacetum vulgare, Cirsium
vulgare, Rubus bifronsSeasonal flooding probably keeps them in check.
Washington Rare Plant Care and Conservation 20
Table 2. Invasive species documented at rare plant occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Invasive Species Observed Invasive Species Comments
Silene douglasii var.
monantha15 Uncertain ST DNR Hypericum sp.
Silene spaldingii 61 Yes USAFWSBromus tectorum, Hypericum
perfoliatum
Silene spaldingii 62 No USAFWS Linaria dalmatica Linaria dalmatica present but not in abundance.
Spiranthes porrifolia 22 No LOCCTY
Amorpha fruticosa, Acer
saccharinum, Phalaris
arundinaceae
Amorpha fruticosa is beginning to dominate the slope.
Both Amorpha and Acer saccharinum had been cut back
but have resprouted.
Tauschia hooveri 18 Yes USABLM Draba verna , nonnative grasssesOne area is heavily impacted and covered with exotic
grasses.
Trifolium thompsonii 1 Yes USAFS
Poa bulbosa, Bromus tectorum,
Linaria dalmatica, Centaurea
diffusa
Trillium parviflorum 20 Yes USADOD Cytisus scoparius
Trillium parviflorum 41 Yes USADOD Cytisus scoparius
Washington Rare Plant Care and Conservation 21
Table 3. Land use and management concerns documented for occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Adjacent Land Use and Management Comments
Astragalus arthurii 12 YesST DFW,
USAFSPast grazing. Weeds. Many flowers stressed and so not producing seed.
Astragalus arthurii 15 YesST DFW,
USAFSElk and cows frequent the area. One plant appeared to be reduced in size by grazing.
Astragalus
columbianus25 Yes USABLM
Wilfire from the previous summer has caused the habitat to be devoid of shrubs. This might
cause the area to become much drier over time. The Yakima Training Range is adjacent, and
there is the possibility of wildfire spreading from the Range to this area.
Astragalus misellus
var. pauper30 Yes
ST DFW,
USABLMRecent fire through some areas, but ASMIP plants are persisting and appear vigorous.
Botrychium
ascendens6 No USAFS Alder and conifers are invading the area, creating heavy shade and competition.
Calochortus
macrocarpus var.
maculosus
11 Yes USAFSFire may have reduced the population. Logging operation has had some impact, but could not
determine severity.
Calochortus
macrocarpus var.
maculosus
24 Yes PVTUUU Both sites severely degraded ‐ grazing, erosion, invasive weeds. Plants showed signs of stress.
Campanula
lasiocarpa6 No USAFS Disturbance and land use threats due to heavy human foot traffic.
Cryptantha
spiculifera35 Yes USABLM
Degraded habitat with areas of cheatgrass invasion. There are cattle/horse trails through the
lower population. Observed a number of dead plants on the lower slope, probably from the
previous year. I assumed this resulted from the extremely dry two years prior, and possibly the
competition with cheat grass.
Cypripedium
parviflorum20 Yes USABLM Near road and open gravelly field; some litter found.
Delphinium
viridescens36 No USAFS
A large fire had moved through the Table Mountain area in 2012, so it is also possible that the
habitat had been altered enough that it affected the DEVI population, which was last seen in
1996. The forest surrounding the talus slope was heavily impacted by the fire, although the
understory vegetation, in the absence of green trees, was growing well.
Washington Rare Plant Care and Conservation 22
Table 3. Land use and management concerns documented for occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Adjacent Land Use and Management Comments
Epipactis gigantea None Yes USANPSSome isolate patches near the point are susceptible to erosion due to wave action and trampling
by humans accessing the shore.
Epipactis gigantea None Yes USANPSThe Spruce RR Trail runs above but fairly close to the lakeshore. Possible potential for
disturbance by hikers.
Eremothera
pygmaea3 No ST SPR Recommend signage at boat ramp to check boats for cheat grass seeds, etc.
Erigeron
disparipilus6 Yes ST SPR Plants along trail picked or trampled from public use.
Erythranthe patula 10 Yes ST DFW Numerous cattle trails across the slopes.
Githopsis
specularioidesNew Yes ST DFW Mountain bikers pedaling off roads through meadows may crush plants and spread weeds.
Heterotheca
oregona9 Yes USAFS
At the interface of the beach and the forest, there is evidence that may be the primary conduit
for invasive plant species. The native matrix of the forest buffer seemed relatively intact, though
we did notice signs of human presence on the ridge leading down to the river, including garbage
and a makeshift firing range (i.e. tin can lodged in branches of a shrub with a bullet hole through
it).
Leptosiphon
bolanderi10 Yes ST DFW Mountain bikes are beginning to use the area and travel off the roads.
Lobelia dortmanna None Yes USANPSIn some sections, plants and flowering stalks are covered with a brown slime (algae?), sometimes
nearly obscuring them from view. Noticeable lack of plants near newer docks.
Lobelia dortmanna None Yes USANPSNo obvious new impacts to populations but activities from numerous homes along water with
docks and small beaches could threaten some populations.
Lomatium
laevigatum13 Yes ST SPR
Minimal threats from recreation (rock climbing) and/or highway maintenance (herbicide
overspray). Blackberry may have limited or be limiting extent of population in creek
canyon/ravine. Areas north of SR bridge are densely overgrown with blackberry.
Lomatium rollinsii 21 Yes ST DFW Adjacent land use threats from aerial spraying upslope.
Washington Rare Plant Care and Conservation 23
Table 3. Land use and management concerns documented for occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Adjacent Land Use and Management Comments
Lomatium
serpentinum4 No USACOE
Dredging and channelization of upstream Mill Creek above Diversion Dam. Fluctuations of pool
elevation at lake for operation and testing purposes. The diversion canal and areas surrounding
lake planted by WDFW and Corps as wildlife areas with nonnatives. Forebay area left to develop
naturally but impacted by surrounding changes.
Oenothera
cespitosa ssp.
cespitosa
None Yes USABLMDegraded habitat with areas of cheat grass invasion. There are cattle/horse trails through the
lower population.
Orthocarpus
bracteosus9 Yes USAFS
Meadow appears to be drying out whether due to a natural progression, climate change or the
current extremely hot, dry summer Cow patties were found in south end of search area although
local Ranger District office reported grazing was not allowed. In 2012 there was a barbed wire
fence beteween the road and the prairie but that is now gone.
Parnassia palustris
var. neogaea14 Yes USAFS
The road was decommissioned on top of the population; now massive amounts of debris partially
block the creek.
Perideridia oregana 3 Yes LOCCTY Plants along trails are subject to trampling.
Platanthera
chorisiana13 Yes ST DNR
Human trampling and fire continue to be the biggest threats. Despite plenty of fire pits at
campsites, fire rings and burns at the log jam continue to be found. Once people get to the few
campsites there is little exploring they can do. The social fishing trail passes right through the
smaller patch of PLCH, and the meadow is adjacent to the most popular campsite. People explore
and play in the outlet pools (toilet paper & other trash) and meadow.
Potentilla
glaucophylla var.
perdissecta
3 No ST DNR Yes, all of the wet, damp areas in the area are heavily trampled by cattle.
Ribes cereum var.
colubrinumNew Yes ST DFW Nearby wheat farming & aerial spraying
Ribes
oxyacanthoides
ssp. irriguum
15 Yes ST SPR Unmaintained hiking trail nearby. Garbage found along creek near plants.
Washington Rare Plant Care and Conservation 24
Table 3. Land use and management concerns documented for occurrences monitored by Rare Care in 2017 (continued).
Species Name EO Num
Species Found Owner Adjacent Land Use and Management Comments
Salix sessilifolia 1 Yes LOCCTY
There is foot traffic through the area, with some social trails through the willow stands, though
most plants are undisturbed. We found several homeless camps in the forested riparian area, not
currently an issue, but a large number of people might lead to brush clearing of the beach area
where the main portion of the rare plant population is.
Tauschia hooveri 18 Yes USABLMOne area is bisected by a trail heavily used on foot and by bicycle (and horses?). Possible off‐trail
hiking, bicycling and horseback riding.
Trillium parviflorum 41 Yes USADODSome herbivory. Plants immediately west of road, adjacent to grassy field had been run over by a
large vehicle. Several plants were recovering and flowering, several were crushed.
Washington Rare Plant Care and Conservation 25
Table 4. Addendum to the 2016 rare plant monitoring results.
Species Name EO Num1 State Status2 Visit Date Species
Found Pop. Size3 Site Name Managed Area Owner Contact Person
Corydalis aquae‐
gelidae 18 T 7/18/2016 Yes 561
Puny Creek
headwaters
Mt St Helens NVM,
Gifford Pinchot NF USAFS
Andrea
Montgomery
Notes:1. EO num is the element occurrence number assigned to the site by the Washington Natural Heritage Program.
2. State Status: E = endangered, R1 = review species (group 1), R2 = reivew species (group 2), S = sensitive, T = threatened,
X = possibly extinct or extirpated from Washington.
3. Population size estimate represents individuals unless otherwise noted.
Washington Rare Plant Care and Conservation 26