Platanthera blephariglottis |
Platanthera chorisiana |
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white fringe orchid, white-fringe bog-orchid |
Chamisso's rein orchid, chimissso's orchid, Choriso bog orchid, Choriso's orchid, small bog orchid |
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Habit | Plants 8–110 cm. | Plants 4–20(–30) cm. | ||||
Leaves | 2–several, spreading to ascending, scattered along stem, rather abruptly to gradually reduced distally; blade linear-lanceolate, ovate-lanceolate, elliptic-lanceolate, 5–35 × 1–5 cm. |
(1–)2(–4), spreading, subopposite toward base of stem; bracts (0–)1(–2) distally; blade elliptic, lanceolate, to suborbiculate, 2–9 × 0.9–4 cm. |
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Spikes | dense to rather lax. |
rather lax to dense. |
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Flowers | resupinate, showy, white; lateral sepals reflexed; petals linear to oblanceolate, apex fringed to nearly entire; lip reflexed to porrect, without basal thickening, ovate-oblong to oblong-elliptic, rarely quadrangular-suborbiculate, margin fringed; spur essentially cylindric, slender; rostellum lobes curving forward, slightly spreading, angular-elongate; pollinaria with stalks curved forward; pollinia remaining enclosed in anther sacs; viscidia elliptic-suborbiculate to orbiculate; ovary slender, 10–28 mm. |
incompletely resupinate, inconspicuous, greenish; lateral sepals porrect; petals broadly ovate, margins entire; lip projecting forward, concave, orbiculate, ovate, or elliptic, without basal thickening, 1.5–2.5 × 1.2–2 mm, margins entire; spur stoutly cylindric to saccate, obtuse, 0.7–1.25 mm; rostellum lobes spreading, directed downward, minute, obscure; pollinaria straight; pollinia evidently remaining enclosed in anther sacs; viscidia oblong to suborbiculate-quadrangular; ovary rather stout, mostly 2–4 mm. |
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2n | = 42. |
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Platanthera blephariglottis |
Platanthera chorisiana |
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Phenology | Flowering Jul–Aug. | |||||
Habitat | Wet tundra, meadows, bogs | |||||
Elevation | 0–400 m (0–1300 ft) | |||||
Distribution |
e North America
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AK; WA; BC; Asia (Kamchatka to Japan)
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 567. | FNA vol. 26, p. 563. | ||||
Parent taxa | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Orchis blephariglottis, Habenaria blephariglottis | Habenaria chorisiana, Limnorchis chorisiana, Pseudodiphryllum chorisianum | ||||
Name authority | (Willdenow) Lindley: Gen. Sp. Orchid. Pl., 291. (1835) | (Chamisso) Reichenbach f.: in H. G. L. Reichenbach et al., Icon. Fl. Germ. Helv. 13–14: 128. (1851) | ||||
Web links |