Platanthera chorisiana

(Chamisso) Reichenbach f.

in H. G. L. Reichenbach et al., Icon. Fl. Germ. Helv. 13–14: 128. 1851.

Basionym: Habenaria chorisiana Chamisso Linnaea 3: 31. 1828
Synonyms: Limnorchis chorisiana (Chamisso) J. P. Anderson Pseudodiphryllum chorisianum (Chamisso) Nevski
Treatment appears in FNA Volume 26. Treatment on page 563. Mentioned on page 553.

Plants 4–20(–30) cm. Leaves (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 lax to dense. Flowers 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.


Phenology: Flowering Jul–Aug.
Habitat: Wet tundra, meadows, bogs
Elevation: 0–400 m

Distribution

V26 1147-distribution-map.jpg

B.C., Alaska, Wash., Asia (Kamchatka to Japan).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Platanthera chorisiana"
Charles J. Sheviak +
(Chamisso) Reichenbach f. +
Habenaria chorisiana +
B.C. +, Alaska +, Wash. +  and Asia (Kamchatka to Japan). +
0–400 m +
Wet tundra, meadows, bogs +
Flowering Jul–Aug. +
in H. G. L. Reichenbach et al., Icon. Fl. Germ. Helv. +
Limnorchis chorisiana +  and Pseudodiphryllum chorisianum +
Platanthera chorisiana +
Platanthera +
species +