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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Isotria medeoloides (Small whorled pogonia)
Cressler, Alan

Isotria medeoloides

Isotria medeoloides (Pursh) Raf.

Small Whorled Pogonia, Green Fiveleaf Orchid

Orchidaceae (Orchid Family)


USDA Symbol: ISME2

USDA Native Status: L48 (N), CAN (N)

A US-listed threatened species. A state-listed endangered species in CT, IL, ME, MD(extirpated), MA, MI, MO, NH, NJ, NY, NC, OH, PA, RI, TN, VT AND VI. A state-listed threatened species in GA. A North American orchid of the northeastern United States, with isolated populations farther west, including in southern Ontario, Canada, where it is found only in Carlton Swamp. Canada lists it as an endangered species threatened with extirpation by all-terrain vehicles.


From the Image Gallery

16 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple
Fruit Type: Capsule
Size Notes: Up to about 10 inches tall.

Bloom Information

Bloom Color: White , Yellow , Green , Brown
Bloom Time: May , Jun , Jul


USA: CT , DC , DE , GA , IL , MA , MD , ME , MI , MO , NC , NH , NJ , NY , OH , PA , RI , SC , TN , VA , VT
Canada: ON
Native Habitat: Woodland

U.S. Fish & Wildlife Service Threatened & Endangered Status

USFWS Species Profile: Q1XL
Status: Threatened
Historic Range: U.S.A. (CT, DC, DE, GA, IL, MA, MD, ME, MI, MO, NC, NH, NJ, NY, PA, RI, SC, TN, VA, VT,WV), Canada (Ont.)
Critical Habitat: N/A
Special Rules: N/A
This information is derived from the U.S. Fish & Wildlife Serrvice Environmental Conservation Online System.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 35 - Go Orchids (2019) North American Orchid Conservation Center (NAOCC)

Additional resources

USDA: Find Isotria medeoloides in USDA Plants
FNA: Find Isotria medeoloides in the Flora of North America (if available)
Google: Search Google for Isotria medeoloides


Record Modified: 2023-01-23
Research By: TWC Staff, Joseph A. Marcus

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