Flora of North America species comparison

procumbent, pubescent in lines, glabrate.

prostrate, villous, glabrate.

sessile;

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

sessile;

blade elliptic, ovate-rhombic, or oval, 0.6–2.5 × 0.3–1.1 cm, apex acute or obtuse, villous, soon 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 white, globose, 0.5–1 cm diam.;

bracts less than 1/2 as long as tepals.

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 monomorphic, white, lanceolate, 3–5 mm, apex acuminate, without rigid, spinose tips, hairs not barbed;

stamens 5;

anthers 3–5, globose;

pseudostaminodes ligulate, shorter than filaments, margins entire or dentate.

lenticular, 0.9–1.1 mm.

lenticular, 1.2–1.5 mm.

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

included within tepals, stramineous, orbiculate to rounded-obovate, 2–2.3 mm, apex truncate.