Flora of North America species comparison

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

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

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.

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.

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.

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.

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

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

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

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

= 32, 36.