Flora of North America species comparison

sprawling t2o erect, nearly simple to much-branched especially distally, 7–35 cm, retrorsely pubescent on 1 side or throughout.

prostrate to erect, much-branched, 5–50 cm, retrorsely pubescent throughout.

stipules lanceolate to ovate, 5–10 mm, apex acuminate, entire;

blade linear-oblong to oblanceolate, 5–30 × 1–7 mm, leathery, apex acute to cuspidate, moderately antrorsely pubescent.

stipules lanceolate, 1.5–7 mm, apex acuminate, entire;

blade linear-oblong to oblanceolate, 3–20 × 0.5–3 mm, herbaceous, apex obtuse to subacute, sparsely antrorsely pubescent.

5-merous, ± short-campanulate, with prominently enlarged hypanthium and calyx flaring distally, (1.5–)2–2.3 mm, pubescent proximally with short, hooked hairs;

sepals greenish to brownish or red-brown, white distally, veins absent, oblong to obovate, 1–1.5 mm, leathery to rigid, margins white, 0.2–0.3 mm wide, papery, apex terminating in divergent awn, hood broadly rounded, awn white, stout-conic, 0.5–0.6 mm, glabrous;

staminodes filiform, ± 0.3 mm;

style 1, cleft in distal 1/5, 0.3–0.6 mm.

5-merous, cylindric, with enlarged hypanthium and calyx constricted then widening distally, 1.2–2.2 mm, pubescent, sometimes only slightly so, mostly proximally with straight or usually hooked hairs;

sepals red-brown, white distally, midrib and lateral pair of veins becoming prominent, linear to oblong, 0.6–1.2 mm, papery, margins white, 0.03–0.1 mm wide, papery, apex terminated by mucro, hood obscure, narrowly rounded, mucro short-conic, 0.05–0.1 mm, glabrous;

staminodes triangular, 0.2–0.4 mm;

style 1, cleft (2- or 3-lobed) in distal 1/5, 0.5–1.3 mm.

terminal, 25+-flowered, much-branched but congested, clusters 5–20 mm wide.

terminal and lateral, 15–50+-flowered, densely congested, ± spheroid clusters 3–5 mm wide.

ellipsoid to subglobose, 0.5–0.8 mm, minutely papillate distally.

ovoid to subglobose, 0.4–0.6 mm, ± smooth, glabrous.