Difference between revisions of "Platanthera macrophylla"
Wild Fl. Notes 3: 23. 1988.
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|publication year=1988 | |publication year=1988 | ||
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|subfamily=Orchidaceae subfam. Orchidoideae | |subfamily=Orchidaceae subfam. Orchidoideae | ||
|tribe=Orchidaceae tribe Orchideae | |tribe=Orchidaceae tribe Orchideae | ||
Revision as of 16:40, 18 September 2019
Plants 23–63 cm. Leaves 2, in subequal basal pair lying on ground; bracts (very rarely, 0–)1–6, scattered along stem; blade broadly elliptic, orbiculate, or oblate, 7–24 × 5–19 cm. Spikes lax. Flowers resupinate, rather showy; calyx mostly greenish white; corolla mostly white; lateral sepals reflexed to somewhat spreading; petals lanceolate-falcate, margins entire; lip descending to somewhat reflexed, linear-oblong to linear-lanceolate, without basal thickening, 10–23 × 1–2.5 mm, margins entire; spur slenderly clavate, 28–46 mm; rostellum lobes directed strongly forward, wide-spreading, angular; pollinaria nearly straight, (4.6–)4.7–6.8 mm; pollinia remaining enclosed in anther sacs; viscidia orbiculate; ovary slender to rather stout, mostly 16–29 mm.
Phenology: Flowering Jun–Aug.
Habitat: Mesic to wet coniferous and deciduous forest
Elevation: mostly 0–1000 m
Distribution
N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Conn., Maine, Mass., Mich., Minn., N.H., N.Y., Pa., Vt.
Discussion
Selected References
None.