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Platanthera orbiculata
	Flowers of Platanthera orbiculata
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Orchidoideae
Genus:	Platanthera
Species:	P. orbiculata
Binomial name
	Platanthera orbiculata; (Pursh) Lindl.
Synonyms
	Orchis orbiculata Pursh; Habenaria orbiculata (Pursh) Torr.; Habenaria orbiculata var. lehorsii Fernald; Habenaria orbiculata var. menziesii (Lindley) Fernald; Platanthera orbiculata var. lehorsii (Fernald) Catling;

Platanthera orbiculata, the round leaved orchid^[2] or lesser roundleaved orchid,^[3] is a species of orchid native to forested areas of North America. It is widespread across most of Canada and parts of the United States (Alaska, New England, Appalachian Mountains, Great Lakes Region, Rocky Mountains, Black Hills and northern Cascades).^[1]^[4]

Subspecies

There is two accepted subspecies, Platanthera orbiculata var. macrophylla and Platanthera orbiculata var. orbiculata.^[5]

Habitat

Platanthera orbiculata is found in moist to mesic shaded locations in forests. Each plant has two large, nearly round leaves that lie close to the ground, plus a vertical flowering stalk bearing a spike of small, white flowers.^[1]

References

^ ^a ^b ^c Sheviak, Charles J. (2002). "Platanthera orbiculata". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 26. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
^ "Platanthera orbiculata". Go Orchids. North American Orchid Conservation Center. Retrieved 13 February 2022.
^ USDA, NRCS (n.d.). "Platanthera orbiculata". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 7 October 2015.
^ "Platanthera orbiculata". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
^ "Platanthera orbiculata". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.