Flora of North America species comparison

often reddish, at least at nodes, short glandular-pubescent, viscid.

decumbent to semierect, unarmed, without glutinous bands on internodes.

petiole 1–8.5 cm;

blade oblong-lanceolate to ovate, 2.5–9.5 × 1–4.5 cm, margins entire, often undulate, often scabro-ciliate;

surfaces glabrous or glandular-puberulent, adaxial surface usually glaucous.

petiolate, unequal in size in each pair;

blade ± thick and succulent, base usually asymmetric.

10–25-flowered;

bracts lanceolate to ovate, 7–19 × 2–6 mm, papery, margins glandular short ciliate, base attenuate, glabrous or glabrate.

axillary, pedunculate, capitate clusters;

receptacle flat to somewhat rounded-conic, with short, pedicel-like projections;

flowers maturing from one side of inflorescence to other;

bracts persistent, not accrescent, 5–10, distinct, thin and translucent, forming an involucre, linear-lanceolate to ovate, broad.

bisexual, chasmogamous;

perianth radially symmetric, funnelform or salverform, constricted beyond ovary, abruptly expanded to 4–5-lobed limb;

stamens (3–)4–5, included;

styles included;

stigmas linear.

tube pink to magenta, 12–30 mm, limb pale pink to magenta, 8–13 mm diam., lobes showy, over 1.5 mm.

oval in profile, 18–30 × 11–25 mm, walls indurate;

lateral ribs 1–3, or absent, if extending into wings, only slightly raised;

wings (2–)3(–4).

fusiform, indurate throughout, or spongy on exterior, minutely puberulent or glabrous;

wings 2–4, translucent, prominently veined, scarious, extending beyond apex and/or base of body;

sulci smooth or coarsely rugose.