Plants 3–30 cm. Pseudobulbs 4–8 mm diam. Leaves 1(–2, rarely), petiolate base sheathing stem; blade light green, ovate-elliptic, keeled abaxially, 1.5–9.5 × 1–5 cm, apex acute. Inflorescences: floral bracts lanceolate, 1.5–2 mm; pedicels 2–4.5 mm. Flowers resupinate, green or greenish white; dorsal sepal ovate-lanceolate, 1.5–2.5 × 1–1.4 mm, margins revolute, apex acuminate; lateral sepals oblong-lanceolate, slightly falcate, 1.5–2.5 × 0.5–1.2 mm, apex acuminate; petals strongly reflexed, filiform to narrowly linear-lanceolate, 1.4–2.5 × 0.3–0.4(–0.5) mm, apex rounded; lip broadly triangular, concave, 3-lobed, middle lobe ovate, apex acuminate, lateral lobes auriculate, thickened, curved upward; disc with 2 low, thickened, elongate calli, 1.3–2.2 × 1.2–1.8(–2) mm; column 0.4–0.6 × 0.4–0.6 mm. 2n = 28.

Phenology: Flowering summer.
Habitat: Swamps, bogs
Elevation: 0–400 m

Distribution

• Generated Map
• Legacy Map

Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Calif., Colo., Ill., Ind., Maine, Mass., Minn., N.H., N.Y., Pa., Vt., Wis.

Discussion

Selected References

None.

Lower Taxa

None.