Platanthera integrilabia |
Platanthera dilatata |
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monkeyface, white fringeless 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 50–80 cm. | Plants 11–130 cm or more. | ||||||||
Leaves | 2(–3), spreading to ascending, on basal portion of stem, abruptly reduced to bracts distally; blade lanceolate to elliptic, 12–23 × 1–3.2 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 | rather lax. |
very lax to very dense. |
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Flowers | resupinate, showy, white; lateral sepals reflexed; petals oblong, margins entire; lip porrect, spatulate to lance-spatulate, without basal thickening, 10–15 × 2.5–4 mm, margins slightly lacerate to subentire; spur slenderly cylindric, scarcely clavate, 35–60 mm; rostellum lobes directed forward, spreading, angular; rostellum lobes slenderly curving forward, slightly spreading, angular-elongate, long; pollinaria with stalks curved forward; pollinia remaining enclosed in anther sacs; viscidia orbiculate; ovary slender, ca.16–22 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 integrilabia |
Platanthera dilatata |
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Phenology | Flowering (Jun–)Jul–Aug. | |||||||||
Habitat | Wet wooded flats, seeping slopes, marshes, sphagnum bogs | |||||||||
Elevation | mostly 100–700 m (mostly 300–2300 ft) | |||||||||
Distribution |
AL; GA; KY; MS; NC; SC; TN
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North America
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Discussion | Of conservation concern. The description of Platanthera integrilabia is based on a limited sample and is likely too restrictive. Flowers of this species are nocturnally sweet-scented. The vegetative habit is distinctive, with leaves restricted to the base of the stem and a relatively few-flowered inflorescence borne atop a tall bracted scape. In addition to the normal tuberoid, roots often enlarge distally to form bud-bearing tuberoids at a marked distance from the parent stem, giving rise to diffuse clonal colonies. (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. 568. | 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 | Habenaria blephariglottis var. integrilabia, Habenaria correlliana | Orchis dilatata, Habenaria dilatata, Limnorchis dilatata | ||||||||
Name authority | (Correll) Luer: Native Orchids U.S. & Canada, 186. (1975) | (Pursh) Lindley ex L. C. Beck: Bot. North. Middle States, 347. (1833) | ||||||||
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