Platanthera psycodes - (image 1 of 5)
Taxonomy
Family: Orchidaceae
Habitat
Wet meadows and wet open woods.
Associates
Distribution
Newfoundland to southeast Manitoba and MN, south to northern NJ, PA, northern OH, northern IL, and northeastern IA; also in mountains from WV and VA to NC and TN.
Morphology
Herbaceous perennial 14-100 cm; lower leaves lanceolate or oval, the upper much reduced and narrow; inflorescence cylindric, densely flowered; flowers purple to rose-purple, rarely white; sepals broadly oval to obovate, the laterals 5-7 mm long and 3-4 mm wide; lateral petals oblong-spatulate, 5-7 mm long and 3-6 mm wide, finely toothed, about equaling the sepals; lip 7-12 mm long and 8-15 mm wide, deeply 3-parted, each lobe broadly flabellate, shallowly toothed, the teeth shorter than the body of the lobe, the terminal lobe scarcely clawed, not notched in the center.
Notes
Flowers June to August
Wetland indicator: FACW
Similar to P. grandiflora but with the rostellum lobes rounded, directed downward and parallel. Where the two species occur together P. psycodes tends to begin flowering a few weeks later. Can hybridize with P. lacera (P. x andrewsii) in the northeasternmost part of its range where the two species bloom at the same time. May rarely hybridize with P. grandiflora.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
Sheviak, C.J. 2002. Platanthera, In: Flora of North America Editorial Committee, Eds. Flora of North America North of Mexico. Volume 26. Oxford University Press, New York.
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
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Michael Hough © 2018 |