Flora of North America species comparison

prostrate, sometimes rooting adventitiously at nodes, ca. 2–10 m, puberulent to scabrous with pustulate-based hairs;

tendrils 3–7-branched 3–6 cm above base, hirsute, eglandular.

petiole 3–12 cm, coarsely hispid to hispidulous with puberulent understory of gland-tipped hairs;

blade narrowly triangular or triangular-acuminate to triangular-lanceolate, unlobed or shallowly 2-lobed, (10–)12–30(–40) × (6–)8–20(–30) cm, longer than broad, base hastate-cordate to truncate, margins coarsely and widely mucronulate to denticulate, surfaces densely short-hirsute-pilose abaxially, short strigose-hirsute to hispid-hirsute adaxially, eglandular or minutely sessile-glandular.

in fruit 5-ribbed, slightly expanded or not at point of fruit attachment, hardened, woody.

hypanthium broadly campanulate, 10–18 mm;

sepals narrowly lanceolate to linear-oblong or filiform-subulate, 10–25 mm;

corolla golden yellow, campanulate to cylindric-campanulate, 6–10 cm;

anther filaments usually sparsely short-villous with viscid-glandular hairs;

ovary hirsute to short-villous.

tan to cream or yellowish, oblong-ovate to ovate-elliptic, 9–13 mm, margins thickened-raised, surface smooth.

green with white stripes, white-mottled, evenly yellowish to orange-yellow at full maturity, depressed-globose to globose or oblong-globose, 5–10 cm, smooth.

= 40, 42.