Flora of North America species comparison

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

erect, 6–10 cm, evenly puberulent with spreading hairs.

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 lanceolate, 4–7 mm, apex acuminate, entire;

blade linear or needlelike, 4–7 × ca. 0.5 mm, leathery, apex spinulose, puberulous.

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, extended-urecolate, with prominent hypanthial bulge and calyx tapering somewhat distally, 2.8–3.1 mm, moderately pubescent with straight, spreading to appressed hairs generally throughout;

sepals green to red-brown, veins absent or midrib and lateral pair of veins evident in fruit, lanceolate to oblong, 1.3–1.5 mm, leathery to rigid, margins translucent, less than 0.05 mm wide, scarious, apex terminated by awn, hood prominent, narrowly rounded, awn widely divergent, 0.5–0.7 mm, broadly conic in proximal 1/2–2/3 with yellowish, ± glabrous spine;

staminodes subulate, ca. 0.5 mm;

style 1, 2-lobed in distal 1/3–3/5, 0.5–0.7 mm.

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

terminal, 7–28+-flowered, branched, mostly congested in clusters 5–15 mm wide.

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

± ovoid, 0.8–0.9 mm, ± smooth, glabrous.