Platanthera ciliaris |
Platanthera chorisiana |
|
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orange fringe bog-orchid, yellow fringe orchid |
Chamisso's rein orchid, chimissso's orchid, Choriso bog orchid, Choriso's orchid, small bog orchid |
|
Habit | Plants 24–100 cm. | Plants 4–20(–30) cm. |
Leaves | 2–4, spreading to ascending, gradually to somewhat abruptly reduced to bracts distally; blade lanceolate to lance-elliptic, 5–40 × 0.6–6 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. |
Spikes | rather dense. |
rather lax to dense. |
Flowers | resupinate, showy, orange; dorsal sepal entire or rarely emarginate; lateral sepals reflexed; petals linear to linear-cuneate, margins apically fringed; lip porrect to descending, oblong to broadly ovate-spatulate, without basal thickening, 8–19 × 4–18 mm, margins deeply filiform-fringed; spur slenderly cylindric, rarely slightly clavate, 20–35 mm; rostellum lobes scarcely to markedly curving forward, slightly spreading, angular-elongate; pollinaria with stalks nearly straight to curved forward; pollinia remaining enclosed in anther sacs; viscidia orbiculate; ovary slender, 12–27 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. |
2n | = 42. |
|
Platanthera ciliaris |
Platanthera chorisiana |
|
Phenology | Flowering (Jun–)Jul–Sep. | Flowering Jul–Aug. |
Habitat | Moist sandy and peaty meadows, marshes, prairies, pine savannas, open woods, wet wooded flats, seeping slopes, roadsides, dry wooded slopes, sphagnum bogs | Wet tundra, meadows, bogs |
Elevation | 0–1700 m (0–5600 ft) | 0–400 m (0–1300 ft) |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IL; IN; KY; LA; MA; MD; MI; MO; MS; NC; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; WV; ON
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AK; WA; BC; Asia (Kamchatka to Japan)
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Discussion | Selection for longer spurs in response to local pollination pressures on the southeastern Coastal Plain has been documented in Platanthera ciliaris, but the extent of variation is minimal, and the situation does not appear to be comparable to that in P. blephariglottis. Hybrids of Platanthera ciliaris with P. blephariglottis are P. ×bicolor (Rafinesque) Luer and with P. cristata are P. ×channellii Folsom; until recently the latter was confused with P. chapmanii (J. P. Folsom 1984). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 568. | 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 | ||
Synonyms | Orchis ciliaris, Habenaria ciliaris | Habenaria chorisiana, Limnorchis chorisiana, Pseudodiphryllum chorisianum |
Name authority | (Linnaeus) Lindley: Gen. Sp. Orchid. Pl., 292. (1835) | (Chamisso) Reichenbach f.: in H. G. L. Reichenbach et al., Icon. Fl. Germ. Helv. 13–14: 128. (1851) |
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