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

Distribution

V26 1160-distribution-map.jpg

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

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.

Selected References

None.

Lower Taxa

None.
... more about "Platanthera integrilabia"
self-pollination +
Charles J. Sheviak +
(Correll) Luer +
Habenaria blephariglottis var. integrilabia +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
12 cm120 mm <br />0.12 m <br /> (23 cm230 mm <br />0.23 m <br />) +
lanceolate +  and elliptic +
1 cm10 mm <br />0.01 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
Ala. +, Ga. +, Ky. +, Miss. +, N.C. +, S.C. +  and Tenn. +
mostly 100–700 m +
3-merous +, sessile +  and pedicellate +
ellipsoid;cylindric +
Wet wooded flats, seeping slopes, marshes, sphagnum bogs +
lateral +  and terminal +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
spreading;ascending +
reduced +
spatulate +  and lance-spatulate +
larger +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
slightly lacerate +  and subentire +
2.5mm +  and 4mm +
differing in form and color +
slender +
1.6 cm16 mm <br />0.016 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
1-many-flowered +  and cymose +
pendent +  and erect +
Flowering (Jun–)Jul–Aug. +
Native Orchids U.S. & Canada, +
aerial +  and subterranean +
lancefusiform +
slender +
spreading +  and directed +
angular-elongate +
minute +
free +, distinct +, adnate +  and connate +
foliaceous +
not +  and alike +
Endemic +  and Conservation concern +
clavate +  and cylindric +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
leafless +  and leafy +
pendent +  and erect +
proliferous +
thickened +  and stout +
concave +  and convex +
Habenaria correlliana +
Platanthera integrilabia +
Platanthera +
species +
orbiculate +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +
erect to somewhat +