Platanthera integrilabia

(Correll) Luer

Native Orchids U.S. & Canada, 186. 1975.

EndemicConservation concern
Basionym: Habenaria blephariglottis var. integrilabia Correll Bot. Mus. Leafl. 9: 153. 1941
Synonyms: Habenaria correlliana Cronquist
Treatment appears in FNA Volume 26. Treatment on page 568. Mentioned on page 552.

Plants 50–80 cm. 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. Spikes rather lax. 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.

Phenology: Flowering (Jun–)Jul–Aug.
Habitat: Wet wooded flats, seeping slopes, marshes, sphagnum bogs
Elevation: mostly 100–700 m


V26 1160-distribution-map.jpg

Ala., Ga., Ky., Miss., N.C., S.C., Tenn.


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.

Selected References


Lower Taxa

... more about "Platanthera integrilabia"
Charles J. Sheviak +
(Correll) Luer +
Habenaria blephariglottis var. integrilabia +
Ala. +, Ga. +, Ky. +, Miss. +, N.C. +, S.C. +  and Tenn. +
mostly 100–700 m +
Wet wooded flats, seeping slopes, marshes, sphagnum bogs +
Flowering (Jun–)Jul–Aug. +
Native Orchids U.S. & Canada, +
Endemic +  and Conservation concern +
Habenaria correlliana +
Platanthera integrilabia +
Platanthera +
species +