Flora of North America species comparison

prostrate, villous.

procumbent, pubescent in lines, glabrate.

sessile;

blade oval to obovate, usually as broad as long, 1.3–3 × 1.1–1.7 cm, apex rounded, pilose, glabrate.

sessile;

blade elliptic to oblong or oblanceolate, 1.2–5 × 0.5–2.2 cm, apex obtuse to acute, glabrous.

axillary, sessile;

heads stramineous, globose to ovoid, 0.6–1 × 0.6–0.7 cm;

bracts equaling tepals, apex attenuate.

axillary, sessile;

heads white, subglobose or ovoid, 0.5–1.1 cm;

bracts keeled, ca. 1/2 as long as tepals.

tepals dimorphic, stramineous, lanceolate, 5–7 mm, apex acuminate, spinose tipped, sparsely villous, hairs barbed;

stamens 5;

anthers 3–5, globose;

pseudostaminodes triangular, shorter than filaments, margins dentate.

tepals white, ovate to lanceolate, 2–3.5 mm, apex acuminate, hairs not barbed;

stamens 5;

anthers 3–5, globose;

pseudostaminodes subulate, margins laciniate.

lenticular, 1.3–1.5 mm.

lenticular, 0.9–1.1 mm.

included within tepals, brown, compressed, 1.8 mm, apex truncate.

included within tepals, sides exerted in mature fruit, greenish stramineous, obcordate, 1.3–1.7 mm, apex retuse.