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, minutely and sparsely glandular-pubescent or ± glabrate, arising from cordlike rhizomes.

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 elliptic-oblong to ovate, 1–4 × 0.5–2 cm, margins entire to shallowly sinuate, often ± undulate, surfaces minutely puberulent or glabrous (especially in age).

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 broadly lanceolate, ovate, obovate, or almost round, 5–10 × 3–10 mm, scarious, apex acute, obutse, or rounded, glandular-puberulent;

flowers 15–25.

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

tube greenish, 7–11 mm, limb white, 3 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, 5–7 × 3–5 mm, scarious, apex truncate and slightly beaked;

wings (3–)5, dilated distally and ± flattened perpendicular to plane of lamina, dilations ± as long as wide, thin walled, cavities extending throughout.