Host an Event Volunteer Join Tickets

Support the plant database you love!


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.

Enter a Plant Name:
Or you can choose a plant family:
Platanthera orbiculata (Lesser roundleaved orchid)
McAdoo, David R.

Platanthera orbiculata

Platanthera orbiculata (Pursh) Lindl.

Lesser Roundleaved Orchid, Roundleaf Rein Orchid, Round-leaved Orchid

Orchidaceae (Orchid Family)

Synonym(s): Habenaria orbiculata, Habenaria orbiculata var. lehorsii, Habenaria orbiculata var. menziesii, Lysias orbiculata

USDA Symbol: PLOR4

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

1 stalk rising between 2 broadly elliptical or round basal leaves lying on ground, bearing up to 25 white or greenish-white, bilaterally symmetrical flowers in a raceme.

This species has the largest flowers of all western rein orchids. Several kinds of moths feed on nectar in the spur and probably pollinate the flower.


From the Image Gallery

5 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple

Bloom Information

Bloom Color: White , Green
Bloom Time: Jun , Jul , Aug


USA: AK , CT , ID , IL , IN , MA , MD , ME , MI , MN , MT , NC , NH , NJ , NY , OH , PA , RI , SD , TN , VA , VT , WA , WI , WV
Canada: NB , NL , NS , PE
Native Distribution: British Columbia east to Labrador and south to northern Oregon, northern Idaho, and northwestern Montana; also in northern regions of eastern United States.
Native Habitat: Moist forest floors.

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.

Additional resources

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


Record Modified: 2012-09-30
Research By: TWC Staff

Go back