Flora of North America species comparison

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

erect, usually much-branched, 4–30 cm, retrorsely to spreading-pubescent mostly on 1 side.

stipules lanceolate, 2.5–8 mm, apex acute, entire;

blade linear to linear-lanceolate or -oblanceolate, 5–30 × 0.5–2 mm, leathery, apex acute, often mucronate, sparsely appressed-pubescent.

stipules subulate to lanceolate, 0.5–4.5 mm, apex acuminate, sometimes fimbriate;

blade usually dotted or blotched, oblanceolate to elliptic or obovate, 2–25 × 0.5–7(–10) mm, herbaceous to leathery, apex subobtuse to acute or cuspidate, glabrous or occasionally with very few scattered trichomes along midrib.

5-merous, short-cylindric to ovoid, with enlarged hypanthium and calyx cylindric to tapering distally, 3.5–6.5 mm, pubescent with antrorse, slightly spreading, silky hairs;

sepals greenish to brownish, veins 3, obscure, ribs absent, narrowly lanceolate, 2–3.2 mm, leathery to rigid, margins translucent, ca. 0.1 mm wide, scarious, apex terminated by awn, hood narrowly triangular, awn straight to slightly divergent, white, 0.9–2 mm, scabrous, spinose;

staminodes narrowly triangular, 0.4–0.6 mm;

style 1, cleft in distal 1/6, 1.4–2 mm.

5-merous, short-cylindric, with enlarged hypanthium and calyx ± cylindric, 1.1–1.6 mm, glabrous or with few scattered hairs;

sepals greenish to brownish, veins absent, linear-oblong, 1–1.2 mm, leathery to rigid, margins white to translucent, 0.05–0.1 mm wide, scarious, apex terminated by mucro, hood narrowly rounded, mucro short-conic, 0.05–0.3 mm, ± minutely scabrous;

staminodes absent;

styles 2, 0.07–0.6(–0.7) mm.

terminal, 15–25+-flowered, very compact, forming conspicuous glomerules 10–20 mm wide.

terminal, 25–70+-flowered, branched, loose to compact, forming clusters 3–10 mm wide.

oblong, 1.5–1.8 mm, smooth, pubescent distally.

obovoid to obconic, 0.7–1 mm, minutely papillate.

= 32, 36.