Flora of North America species comparison

basal, 3–5 mm diam.

basal or from proximal branches, 0.5–1.5 mm.

unbranched, straight, terete, 2–5 cm.

1, compressed distally, branched, to 23 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.

2–8, near apex of stem;

petiole 6–8 mm;

blade lanceolate-elliptic, 2-lobed, 1–2.8 × 0.3–0.7 cm, leathery.

erect, racemose, 3–26 cm;

peduncle 2–10 cm;

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

from branches, distichous, imbricate, usually pendent, 10–17 mm;

peduncle greater than 5 mm.

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.

1–4, usually 3, with underside of lip always facing rachis, not resupinate, simultaneous, pale yellow, occasionally marked with reddish;

dorsal sepals ovate, apex acute;

lateral sepals obdolabriform, somewhat wider at base, 3–5.4 × 1.2–2.1 mm;

petals linear-elliptic, somewhat falcate, 3–5.2 × 0.5–0.8 mm;

lip triangular-ovate, 3–4 × 2–2.4 mm, base with pair of lamellae, apex acute to acuminate;

column 2 mm, with prominent tooth on each side, 2 smaller ones distally;

anther ovoid, 2-fid;

ovary with small swollen vesicle underneath, behind lateral sepals, 4 mm, covered by conduplicate, subimbricating bracts, 6–7.5 mm.

ellipsoid;

pedicel 7–11 mm;

body 14–23;

beak 5 mm.

ovoid-ellipsoid, 9–10 × 5–6 mm;

pedicel and beak absent.