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.

erect, dichotomously branched, 5–50 cm, retrorsely to spreading- 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 ovate-lanceolate, 2–6 mm, apex acuminate, entire;

blade linear to linear-oblanceolate or linear-oblong, 3–25 × 1–2.3 mm, herbaceous, apex ± acute, moderately antrorsely puberulent.

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 to narrowly lanceolate, with enlarged hypanthium and calyx cylindric to tapering distally, 2.3–3.5 mm, pubescent mostly proximal with hooked or usually straight hairs, sometimes with scattered straight hairs distally;

sepals flecked or solid red-brown, white distally, midrib obscure, linear-lanceolate, 1.5–2 mm, papery, margins white, 0.1–0.2 mm wide, papery, apex terminated by mucro, hood obscure, narrowly rounded, mucro short-conic, ca. 0.1 mm, glabrous;

staminodes filiform, widening proximally, 0.5–0.6 mm;

style 1, cleft in distal 1/10.

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

terminal and lateral, 15–50+-flowered, often forming large, congested clusters 5–30 mm wide.

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

broadly ellipsoid to ± globose, 0.5–0.7 mm, smooth, glabrous.