Flora of North America species comparison

erect to ascending, much-branched, 10–35 cm, scabrous, puberulent to pubescent, sometimes glabrous with age.

erect or ascending to prostrate, branched, 5–60 cm, often retrorsely pubescent on 1 side.

stipules lanceolate, 5–15 mm, apex acuminate, entire;

blade linear, 7–25(–34) × 0.5–1 mm, leathery, apex obtuse to subacute or submucronate, pubescent to puberulent.

stipules ovate-lanceolate, 1.5–7 mm, apex acuminate, fimbriate;

blade spatulate to oblanceolate or linear-oblanceolate, 3–20 × 1–4 mm, herbaceous, apex acute to obtuse or rounded, glabrous to scaberulous.

5-merous, short-campanulate, with enlarged hypanthium and calyx widening somewhat distally, 1.8–2.8 mm, puberulent, glabrous to hirtellous distally;

sepals green to red-brown, veins absent, oblong, 1.3–1.8 mm, leathery to rigid, margins whitish to translucent, 0.05–0.1 mm wide, scarious, apex terminated by awn, broadly rounded, awn widely divergent, 0.4–0.8 mm, conic in proximal 1/2–2/3 with yellowish, scabrous spine;

staminodes filiform, 0.6–1 mm;

style 1, cleft in distal 1/3–1/6, 0.8–1.2 mm.

5-merous, ± short-cylindric, with slightly enlarged hypanthium and calyx widening somewhat distally, 1–1.8 mm, sparsely to moderately pubescent proximally with hooked to straight hairs;

sepals red-brown (sometimes finely striped or mottled), white distally, midrib obscure, obovate, 0.4–0.8 mm, leathery to rigid, margins white, 0.03–0.1 mm wide, thinly herbaceous, apex broadly rounded, hood broadly rounded, awn or mucro usually absent or minute;

staminodes narrowly triangular, 0.3–0.4 mm;

style 1, cleft in distal 1/6, 0.6–0.8 mm.

terminal, 20–70-flowered, open, clusters 1–2 cm wide.

terminal, 9–25-flowered, ± compact, forming spheroid glomerules 2–6 mm wide.

ellipsoid-ovoid, 0.8–1 mm, smooth, glabrous.

ovoid to ellipsoid, 0.6–0.8 mm, smooth, glabrous.