Flora of North America species comparison

procumbent, pubescent in lines, glabrate.

prostrate, villous.

sessile;

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

sessile;

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

axillary, sessile;

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

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

axillary, sessile;

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

bracts equaling tepals, apex attenuate.

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

stamens 5;

anthers 3–5, globose;

pseudostaminodes subulate, margins laciniate.

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.

lenticular, 0.9–1.1 mm.

lenticular, 1.3–1.5 mm.

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

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