Flora of North America species comparison

prostrate to erect, branched, 5–70 cm, mostly retrorsely to spreading-pubescent on 1 side or throughout.

sprawling, branched from base, 3–10 cm, puberulent.

stipules lanceolate, 2–6 mm, apex acuminate, entire;

blade oblong to elliptic or oblanceolate, 3–25 × 1–6 mm, herbaceous, apex acute and briefly cuspidate, glabrous.

stipules lanceolate, 2.5–5 mm, apex narrowly acuminate, entire;

blade linear-oblong to linear-lanceolate, 2–10 × 0.7–1.5 mm, leathery, apex spinose, minutely puberulent.

5-merous, ± short-cylindric, with enlarged hypanthium and calyx cylindric, 1–1.7 mm, glabrous to pubescent with short hairs, often minutely ciliate, sometimes glaucous;

sepals greenish or greenish white to brownish, veins absent, ovate to oblong, 0.8–1.3 mm, herbaceous, margins white, 0.05–0.1 mm wide, scarious to papery, apex terminated by minute cusp, hood narrowly rounded, cusp light green to whitish, straight, short-conic, 0.1–0.15 mm, minutely scabrous;

staminodes subulate, 0.2–0.3 mm;

style 1, cleft in distal 4/5+, 0.2–0.4 mm.

5-merous, extended-urceolate, with enlarged hypanthial bulge and calyx cylindric to slightly tapering distally, 3.5-4 mm, moderately pubescent proximally, with minute, hooked hairs on hypanthial bulge, sparsely pubescent on calyx, densely so with hooked to coiled hairs on hood;

sepals green to red-purple, midrib apparent, oblong, 1.9–2.1 mm, herbaceous to leathery, margins white, 0.2–0.3 mm wide, papery, apex terminated by awn, hood triangular-rounded, awn erect, becoming widely divergent, white, ± lanceoloid from proximal constriction, 0.8–1.3 mm, slightly scarious, distinct spine absent;

staminodes narrowly subulate, 0.6–0.8 mm;

style 1, cleft in distal 7/8, 0.7–0.8 mm.

terminal, 20–40+-flowered, diffuse, lax, repeatedly forked or dichotomous.

terminal, 10–20-flowered, congested, in clusters 0.5–1.5 mm wide.

ellipsoid, 1–1.3 mm, papillate distally.

unknown.