Flora of North America species comparison

unknown.

subterranean, short.

subterranean, short.

green at anthesis, 2–6, subpetiolate;

blade elliptic to oblanceolate, 5–17 × 2–5 cm, apex rounded to acute.

withering at or during anthesis, 3–12;

petiole 1–2.5 cm;

blade elliptic to ovate, 4–10 × 1.5–3.5 cm, apex obtuse to acute.

peduncle to 25 cm, partially enclosed by tubular sheaths, proximalmost sometimes leafy;

rachis laxly 20–35-flowered, 5–25 cm;

floral bracts narrowly lanceolate, clasping base of ovary, to 10 mm, apex acuminate, pubescent.

peduncle 26–37 cm, partially enclosed by tubular sheaths, proximalmost larger but not leafy;

rachis laxly 20–35-flowered, 10–18 cm;

floral bracts lanceolate, clasping base of ovary, 5–10 mm, apex acuminate, pubescent.

sepals greenish white, adaxially pubescent;

dorsal sepal distinct, ovate-elliptic to elliptic-lanceolate, 4–7 × 2–3 mm, apex obtuse;

lateral sepals broadly, obliquely ovate, 4.3–6.5 × 2.5–3.5 mm, apex acute to obtuse;

petals white, green-veined, obliquely triangular, 4–6 × 3.5–5 mm, margins minutely ciliate or entire, glabrous;

lip white with green, deeply concave center, distinctly clawed, suborbiculate, 5–7 × 5–7 mm, apex short-caudate;

column white, 4–5 mm; pedicellate ovary 10–20 mm.

sepals green, adaxially pubescent;

dorsal sepal distinct, oblong-lanceolate, 4–5 × 2–3 mm, apex acute to obtuse;

lateral sepals obliquely ovate-lanceolate, 4–5 × 2.5 mm, apex acute to obtuse;

petals recurved, white, indistinctly clawed, obliquely triangular-ovate, 4–4.5 × 1.5 mm, margins entire, apex acute, pubescent;

lip subsessile, white with 2 dark green blotches, obovate, 4.5 × 3.5 mm, apex short-caudate;

column white, 2.5 mm; pedicellate ovary 7–9 mm.

8–13 mm.

8–13 mm.