Flora of North America species comparison

climbing or trailing, to 300 cm.

stipules spreading, ovate to triangular, 2 × 1 mm;

petiole 3.5–10 cm;

rachis 1.5–4 cm;

stipels lanceolate, 1.2 mm;

leaflet blades ovate-lanceolate, distinctly 3-lobed, with rounded or quadrate lobes basally, 4–8 × 5 cm, membranous to slightly papery, venation not reticulate, base truncate, apex acute, surfaces glabrous.

with basal and lateral branches, 5–20 cm;

main axis pubescent;

rachis 7–8 cm, flowers loosely spaced on elongated axis, with to 7 biflorous nodes;

bracts lanceolate, 1.3–1.5 × 1 mm, 3-veined.

4–11 cm.

5–15 mm, hairs straight or curved;

bracteoles persistent, ovate-elliptic or oblong, 0.8 mm.

calyx campanulate, 3.2 mm, strigillose;

lobes obtuse;

corolla pink to purplish, 13 mm;

banner broadly ovate, 9 mm, apex emarginate;

wings obovate, 12–13 mm;

keel 0.8 mm;

ovary lanceolate, 5 mm.

pendent, compressed, lanceolate-falcate, 53–60 × 8–10 mm, dehiscent, valves leathery, glabrous.

5 or 6, light brown, mottled black, ovoid, 4 × 3.5 mm, smooth;

hilum lanceolate, 1 mm.

perennial, with tuberous taproots.