Platanthera ciliaris

(Linnaeus) Lindley

Gen. Sp. Orchid. Pl., 292. 1835.

Endemic
Basionym: Orchis ciliaris Linnaeus Sp. Pl. 2: 939. 1753
Synonyms: Habenaria ciliaris (Linnaeus) R. Brown
Treatment appears in FNA Volume 26. Treatment on page 568. Mentioned on page 552, 569.

Plants 24–100 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. Spikes rather 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.


Phenology: Flowering (Jun–)Jul–Sep.
Habitat: Moist sandy and peaty meadows, marshes, prairies, pine savannas, open woods, wet wooded flats, seeping slopes, roadsides, dry wooded slopes, sphagnum bogs
Elevation: 0–1700 m

Distribution

V26 1161-distribution-map.jpg

Ont., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Va., W.Va.

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).

Selected References

None.

Lower Taxa

None.
... more about "Platanthera ciliaris"
self-pollination +
Charles J. Sheviak +
(Linnaeus) Lindley +
Orchis ciliaris +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
lanceolate +  and lance-elliptic +
0.6 cm6 mm <br />0.006 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Md. +, Mass. +, Mich. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
emarginate +  and entire +
0–1700 m +
3-merous +, sessile +  and pedicellate +
ellipsoid;cylindric +
Moist sandy and peaty meadows, marshes, prairies, pine savannas, open woods, wet wooded flats, seeping slopes, roadsides, dry wooded slopes, sphagnum bogs +
lateral +  and terminal +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
spreading;ascending +
2 (?) +  and 4 (?) +
reduced +
porrect +  and descending +
oblong +  and broadly ovate-spatulate +
larger +
0.8 cm8 mm <br />0.008 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
filiform-fringed +  and fringed +
4mm +  and 18mm +
differing in form and color +
slender +
1.2 cm12 mm <br />0.012 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
1-many-flowered +  and cymose +
pendent +  and erect +
linear;linear-cuneate +
Flowering (Jun–)Jul–Sep. +
Gen. Sp. Orchid. Pl., +
aerial +  and subterranean +
lancefusiform +
slender +
angular-elongate +
minute +
free +, distinct +, adnate +  and connate +
foliaceous +
not +  and alike +
clavate +  and cylindric +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
nearly straight +  and curved +
leafless +  and leafy +
pendent +  and erect +
proliferous +
thickened +  and stout +
concave +  and convex +
Habenaria ciliaris +
Platanthera ciliaris +
Platanthera +
species +
orbiculate +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +
erect to somewhat +