Platanthera blephariglottis |
Platanthera dilatata |
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white fringe orchid, white-fringe bog-orchid |
bog candles, bog-candle, boreal bog-orchid, fragrant white bog orchid, fragrant white rein orchid, rein orchid, scent-bottle, white bog orchid, white northern bog-orchid, white orchid, white rein-orchid |
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Habit | Plants 8–110 cm. | Plants 11–130 cm or more. | ||||||||||||
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. |
few–several, ascending to recurved-spreading, scattered along stem, gradually reduced to bracts distally; blade linear, linear-lanceolate, oblong, or oblanceolate, 3.5–32 × 0.3–7 cm. |
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Spikes | dense to rather lax. |
very lax to very 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. |
resupinate, rather showy, conspicuous, white; lateral sepals spreading to reflexed; petals ovate- to linear-lance-falcate, margins entire; lip descending or apex adhering to dorsal sepal and petal apices, linear-lanceolate to lanceolate, without basal thickening, 4–11 × 2–5 mm, base slightly rounded-dilated to orbiculate, rarely rhombic, margins entire; rostellum lobes parallel to slightly divergent, directed downward, very small, obscure, rounded; pollinaria straight; pollinia remaining enclosed in anther sacs; ovary rather slender to stout, 5–15 mm. |
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2n | = 42. |
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Platanthera blephariglottis |
Platanthera dilatata |
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Distribution |
e North America
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North America
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (3 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. 556. | ||||||||||||
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 | Orchis dilatata, Habenaria dilatata, Limnorchis dilatata | ||||||||||||
Name authority | (Willdenow) Lindley: Gen. Sp. Orchid. Pl., 291. (1835) | (Pursh) Lindley ex L. C. Beck: Bot. North. Middle States, 347. (1833) | ||||||||||||
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