Flora of North America species comparison

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

prostrate, well branched, forming small mats, elongate, 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 1–2 cm;

blade orbiculate-oval, 0.4–1 × 0.3–0.5 cm, margins entire, plane, surfaces 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 shorter than subtending petiole;

bracts lanceolate to ovate, 2–3 × 1–2 mm, papery, glandular-pubescent;

flowers 1–5.

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

tube whitish, 10–18 mm, limb white to lavender-pink, 6–8 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.

narrowly obovate in profile, 3–4 × 2–3 mm, thin, coriaceous, apex broadly conic;

wings absent or 5-angled.