Flora of North America species comparison

procumbent to semierect, slightly to moderately branched, elongate, sometimes reddish at base and nodes, glandular-pubescent, viscid.

decumbent to erect, elongate, glandular-pubescent, infrequently glabrous.

petiole 0.5–8 cm;

blade ovate to triangular or lanceolate, 3–12 × 1–8 cm, margins entire to subsinuate and slightly undulate, adaxial surface glandular-pubescent, abaxial surface more densely and longer pubescent, or sometimes villous.

petiole 1–4 cm;

blade ovate elliptic-oblong to ovate, 1.5–6 × 0.5–3.5 cm, margins entire to sinuate, often undulate, adaxial surface glabrous or puberulent, abaxial surface thinly puberulent to pubescent.

peduncle longer than subtending petiole;

bracts linear-lanceolate to oval-ovate, 7–25 × 2–12 mm, scarious, glandular-puberulent to short villous;

flowers 30–80.

peduncle longer than subtending petiole;

bracts ovate to obovate, 5–20 × 3–10 mm, scarious, apex obtuse to acute, glandular-pubescent to villous;

flowers 25–75.

tube greenish to reddish purple, 10–25 mm, limb white, (2–)6–10 mm diam.

tube rose to greenish, 10–20 mm, limb white, 5–8 mm diam.

winged or not, fusiform and appearing deeply grooved when wingless, when wings not distorted, fruit ± cordate in profile, tapered at base, with prominent beak in broad notch at apex, 5–12 × 2.5–7 mm, indurate, rugose veined or, if wings distorted, fruit ± rhombic in profile and tapered at both ends, or obdeltate and truncate at apex, with prominent beak;

wings 4–5, thick, narrow, not dilated at apex, cavities extending throughout;

peripheral fruits often distorted, S-shaped in lateral view.

broadly turbinate, apex truncate or rounded and slightly beaked, or fruit ± rhombic in profile, 5–12 × 4–8.5 mm, scarious, tapered at both ends;

wings (2–)5 (often 2 on periphery of inflorescence and folded together), dilated distally and flattened perpendicular to plane of lamina, dilations longer than wide, thin walled, cavities extending throughout.