Flora of North America species comparison

prostrate, procumbent, or decumbent, pilose.

ascending, decumbent, prostrate, or erect.

sessile or petiolate;

petiole to 0.6 cm;

blade green, obovate to oblong, 1.5–7.5 × 0.5–2.5 cm, apex rounded or obtuse, pilose-sericeous.

opposite, sessile or petiolate;

blade ovate to obovate, not fleshy, margins entire, long-pilose abaxially and sometimes adaxially.

heads white tinged with pink or red, globose to short-cylindric, 9–13 mm diam.;

bractlets with denticulate crests along keel.

terminal and/or axillary, sessile, subglobose heads, often subtended by involucres of sessile leaves;

bracts and bracteoles thin.

tube densely lanate;

perianth lobes white, narrowly oblong, 4–5 mm, apex attenuate.

bisexual;

tepals 5, connate proximally;

stamens 5;

filaments connate basally into tube;

pseudostaminodes absent;

ovule 1;

style 1, 1.5–4 mm;

stigmas 2(–3), subulate or filiform.

1.2 mm.

1, lenticular, subglobose, to ovoid, smooth.

ovoid, 2.2 mm, apex acute.

included in tepals, stramineous, ovoid or oblong, somewhat compressed, membranous, usually indehiscent.