Flora of North America species comparison

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

arising from branched caudices, ascending to erect, few branched, elongate, glabrous.

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 1–3 cm;

blade elliptic to obovate, 1.5–3.5 × 0.3–1.5 cm, margins entire to ± repand and undulate, surfaces glabrous.

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 ovate to orbiculate, 7–15 × 6–15 mm, scarious, glandular-puberulent;

flowers 15–20.

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

tube white to greenish, 10–15 mm, limb white, 5–7 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 fusiform, 7–10 × 3–4 mm, scarious;

wings absent.