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FNA | Family List | FNA Vol. 26 | Orchidaceae | Platanthera

6a. Platanthera dilatata var. dilatata

Lip usually with basal dilation moderately to strongly developed, 5–10 mm; spur slenderly cylindric to slightly clavate, 4–12 mm (± as long as lip, mostly within 2 mm), apex obtuse to tapered; viscidia linear to linear-oblong. 2n = 42.

Flowering May--Aug. Wet meadows, tundra, marshes, fens, stream banks, shores, ditches, seeping slopes, roadsides; 0--3100 m; Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Yukon; Alaska, Colo., Idaho, Ill., Ind., Maine, Mass., Mich., Minn., N.H., N.Y., Utah, Vt., Wash.


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