Distribution

Description

Flowering	summer.
Height	20-65 cm.
Inflorescence	spikelike raceme.
Leaves	paired basally; orbiculate to elliptic; blade fleshy.
Flowers	green to white, resupinate; all margins entire.
Spur	terete to club shaped.
Rostellum	lobes oriented forward.
Viscidia	circular to subcircular.

 

 

Habitat

Wet to seasonally wet woodlands.

Synonyms

Habenaria macrophylla Goldie, Edinburgh Philos. J. 6: 331. 1822; Platanthera orbiculata

(Pursh) Lindley var. macrophylla (Goldie) Luer

Author and publication information for name

Platanthera macrophylla (Goldie) P. M. Br., Wild Fl. Notes. 3: 23. 1988.

Vernacular name

Greater Round Leaved Orchid

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Link to Interactive Platanthera key

http://utc.usu.edu/keys/Platanthera/Platanthera.html

References

C. J. Sheviak  (2003). Flora of North America, Magnoliophyta: Liliidae: Liliales and Orchidales.  Vol. 26:496-571. Oxford University Press.

U.S. Department of Agriculture. PLANTS Database. http://plants.usda.gov/index.html.   Accessed primarily in July 2006.