Flora of North America species comparison

decumbent to ascending, much branched, elongate, glabrous or glandular-pubescent.

decumbent to ascending, much branched, elongate, reddish at least basally, glandular-pubescent, rarely glabrous or viscid-pubescent.

petiole 1–6 cm;

blade ovate to lance-elliptic, 1–6 × 0.5–4 cm, margins entire to sinuate and ± undulate, surfaces glabrous or glandular-pubescent.

petiole 1–4.5 cm;

blade broadly ovate to orbiculate, 1–5 × 0.5–3 cm, margins entire or ± repand and undulate, surfaces glabrous or sparsely glandular-pubescent.

peduncle longer than subtending petiole;

bracts lanceolate to obovate, 5–12 × 1–5 mm, papery, glabrate to glandular-pubescent;

flowers 25–60.

peduncle longer than subtending petiole;

bracts lanceolate to ovate, 3–10 × 1–5 mm, papery, puberulent to densely glandular-pubescent;

flowers 15–35.

tube pale rose proximally to greenish distally, 15–25 mm, limb white, 7–12 mm diam.

tube greenish to coral pink, 6–18 mm, limb white to pale pink, 5–8 mm diam.

winged, broadly obdeltate or cordate in profile, 6–10 × 4–10 mm, thin, usually coriaceous, rarely indurate, base attenuate, apex prominently beaked;

wings (2–)5 (when 2, folded to form single deep groove), without dilations, broad, thin, without cavities.

winged, turbinate, 3–8 × 3–6 mm, coriaceous, apex broadly tapered to prominent beak;

wings (2–)5 (when 2, folded together) truncate distally with conspicuous dilations, cavities extending throughout.