Orchids

Of

Northeastern Minnesota

Checklist, Status and Bibliography

prepared by

Ely Field Naturalists

elyfieldnaturalists@googlegroups.com

Orchidaceae- Orchid Family Genus: Amerorchis

Round-leaved Orchid, Amerorchis rotundifolia

Genus: Arethusa

Dragon’s Mouth (Wild Pink) Arethusa bulbosa

Genus: Calopogon

Tuberous Grass Pink, Calopogon tuberosus

Genus: Calypso

Fairy Slipper (Calypso), Calypso bulbosa var. americana (S)

Coral-root Orchids – Genus: Corallorhiza

Spotted Coral-root, Corallorhiza maculata

Striped Coral-root, Corallorhiza striata

Early Coral-root, Corallorhiza trifida

Lady’s-slipper Orchids – Genus: Cypripedium

Stemless Lady’s Slipper (Moccasin Flower), Cypripedium acaule

Ram’s Head Orchid, Cypripedium arietinum (S) (T)

Small Yellow Lady’s Slipper, Cypripedium parviflorum var. makasin

Large Yellow Lady’s Slipper, Cypripedium parviflorum var.

pubescens

Showy (Queen’s) Lady’s Slipper, Cypripedium reginae

Rattlesnake Plantain Orchids – Genus: Goodyera

Lesser (Creeping) Rattlesnake Plantain, Goodyera repens

Tesselated (Checkered) Rattlesnake Plantain, Goodyera tesselata

Twayblade Orchids – Genus: Liparis, Listera

Loesel’s Twayblade (Fen Orchid), Liparis loeselii

Auricled Twayblade, Listera auriculata (S) (E)

Heart-leaved Twayblade, Listera cordata

Sources: Research has resulted in recent name changes. The current names of

orchids in the checklist may not always be the same as those names in the older sources listed below.

Frederick W. Case, J. (1987). Orchids of the Western Great Lakes Region. Cranbrook Institute of Science Bulletin 48.

Risen, Cindy and Kim. (2011) Orchids of the North Woods. Kollath+Stensaas Publishing

Roger Tory Peterson, M. M. (1968, 1996). Wildflowers Northeastern/North-central North America. Houghton Mifflin Company.

Smith, Welby. R. (1993). Orchids of Minnesota. University of Minnesota

Press.

Smith, Welby. R. (2012). Native Orchids of Minnesota. University of

Minnesota Press .

Reporting: To report orchid species and locations, send an e-mail to nor-marj@frontiernet.net. Include the date, specific location, orchid species, and contact information. GPS coordinates and a written description of the location provide the best means for relocating the discovery.

The Ely Field Naturalist is are a group of citizen scientists exploring, studying and caring for Northeastern Minnesota natural areas.

Revised September, 2017

Genus: Malaxis

Green Adder’s Mouth, Malaxis unifolia

Rein Orchids – Genus: Platanthera

Northern Green Bog Orchid, Platanthera aquilonis

Small Green Wood Orchid (Club-spur Orchid),

Platanthera clavellata (SC)

Tall White Bog Orchid, Platanthera dilatata

Hooker’s Orchid, Platanthera hookeri

Tall Green Bog Orchid, Platanthera huronensis

Ragged Fringed Orchid, Platanthera lacera

Bluntleaved Rein-orchid, Platanthera obtusata

Small Purple Fringed Orchid, Platanthera psycodes

Lesser Roundleaved Orchid, Platanthera orbiculata

Genus: Pogonia

Rose Pogonia. Pogonia ophioglossoides

Ladies’ Tresses Orchids – Genus: Spiranthes

Northern Slender Ladies’ Tresses, Spiranthes lacera

Hooded Ladies’ Tresses, Spiranthes romanzoffiana

Nodding Ladies’ Tresses, Spiranthes cernua

Key: (S) Species designated as Regional Forester Sensitive Plants

(E) Species designated by the State of MN as endangered

(T) Species designated by the State of MN as threatened

(SC) Species designated by the State of MN as special concern