Flora of North America species comparison

basal, 3–5 mm diam.

from nodes along creeping rhizome, 1–2 mm diam.

unbranched, straight, terete, 2–5 cm.

2 cm apart, ascending, compressed, to 20 cm.

2–3, near apex of stem;

petiole to 1.5 cm;

blade narrowly elliptic, 1–9.5 × 0.4–1.3 cm, nearly leathery, apex acute.

2–7, near apex of stem;

petiole 15–26 mm, compressed;

blade elliptic, 3–8 × 0.8–1.5 cm, leathery, apex obtuse.

erect, racemose, 3–26 cm;

peduncle 2–10 cm;

bracts triangular, to 1/2 length of ovary, 12–18 mm, apex acuminate.

distichous-elongate, usually erect, rarely arching, sinuous, 5–15 cm;

peduncle 1–3 cm. Flowers 3–10, with underside of lip always facing rachis, not resupinate, somewhat successive, green;

sepals ovate, 5 × 2.5 mm, apex acute to obtuse;

petals linear, 5 × 1 mm;

lip ovate to nearly quadrangular, 3 × 3 mm, apex obtuse to rounded, 2-callose;

column 3 mm;

clinandrium hood denticulate;

anther ovoid, with low keel in front;

ovary 10–11 mm, covered by prominent, conduplicate bracts often somewhat longer than ovary.

6–14, spread along apical 1/2 of inflorescence, resupinate, simultaneous, pale green to bronze-colored;

sepals wide open, narrowly obovate, 5-veined, 6–11 × 2–3 mm, margins revolute, apex obtuse;

petals narrowly oblanceolate, 1-veined, 6–11 × 1–2 mm, apex rounded;

lip base cordate, 3-lobed, middle lobe triangular, apex rounded to slightly notched, 2-callose, with low midrib, 4–6 × 5–7 mm, lateral lobes semiorbiculate;

column 11–12 mm;

clinandrium hood erose, covering anther;

anther ovate, with low keel along front;

ovary 12–18 mm.

ellipsoid;

pedicel 7–11 mm;

body 14–23;

beak 5 mm.

ovoid;

pedicel 1–2 mm;

body 10–12 × 7–9 mm;

beak 3–4 mm.