Platanthera flava |
Platanthera peramoena |
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northern tubercled bog-orchid, palegreen orchid |
purple fringeless orchid |
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Habit | Plants 13–65 cm. | Plants 35–105 cm. | ||||
Leaves | (1–)2–3(–4), spreading to ascending, gradually to rather abruptly reduced to bracts distally; blade lanceolate to elliptic-oblong, 5–35 × 1–7 cm. |
2–5, spreading to ascending, scattered along stem, gradually reduced to bracts distally; blade lanceolate, elliptic, oblong-elliptic, or oblance-oblong, 7–27 × 1.2–5 cm. |
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Spikes | lax to dense. |
lax to dense. |
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Flowers | resupinate, inconspicuous, yellowish green; lateral sepals porrect to reflexed; petals oblong-orbiculate to ovate, apex somewhat crenulate; lip descending to commonly reflexed, 2–6 × 1.8–5 mm, base auriculate, with prominent central tubercle, distal margin entire to slightly crenulate; spur cylindric to strongly clavate, 4–8(–11) mm, apex rarely 2-lobed; rostellum lobes mostly parallel to slightly diverging, directed downward, minute, obscure; pollinia remaining enclosed in anther sacs; viscidia mostly quadrangular, oblong-quadrangular, orbiculate, or broadly asymmetric, commonly canaliculate to nearly cylindric and difficult to assess; ovary rather slender to stout, mostly 8–10 × 2 mm. |
resupinate, showy, rose-purple; lateral sepals somewhat reflexed; petals oblong-linear to spatulate, distally crenate to entire; lip descending to somewhat porrect, deeply 3-lobed, without basal thickening, 11–20 × 12–23 mm, distal margins of lobes dentate-lacerate, rarely nearly entire, lateral lobes narrowly cuneate, middle lobe broadly cuneate-flabellate, emarginate to 2-fid; spur clavate, 20–30 mm; rostellum lobes directed forward, spreading, angular; pollinaria straight to geniculate; pollinia directed forward; viscidia orbiculate; ovary slender, 13–23 mm. |
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Platanthera flava |
Platanthera peramoena |
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Phenology | Flowering (Jun–)Jul–Aug(–Oct). | |||||
Habitat | Alluvial forests, wet wooded flats, stream banks, seeping slopes, marshes, moist prairies, old fields and pastures, ditches, thickets | |||||
Elevation | 0–800 m (0–2600 ft) | |||||
Distribution |
e North America
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AL; AR; DE; GA; IL; IN; KY; MD; MO; MS; NC; NJ; OH; PA; SC; TN; VA; WV
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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. 563. | FNA vol. 26, p. 565. | ||||
Parent taxa | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Orchis flava, Habenaria flava, Perularia scutellata | Habenaria peramoena | ||||
Name authority | (Linnaeus) Lindley: Gen. Sp. Orchid. Pl., 293. (1835) | (A. Gray) A. Gray: Manual, 473. (1848) | ||||
Web links |