Flora of North America species comparison

petiolate;

petiole 0.5–5 cm;

blade simple, elliptic or ovate to cordate, 2.5–12 × 1.2–9 cm, margins entire to deeply pinnatifid and usually 3-lobed near base, lobe margins entire, base truncate to cordate.

petiolate;

petiole 1–8 cm;

blade simple, elliptic to ovate, 11–31 × 4–14 cm, margins entire, base acute, often with smaller axillary leaves.

terminal or lateral, extra-axillary, much-branched, 7–40-flowered, (1–)4–15 cm.

terminal, becoming leaf-opposed, much-branched, 50–100-flowered, 5–24 cm.

inserted into a small sleeve on the inflorescence axis, 0.6–1.2 cm in flower and fruit.

erect and 0.2–0.5 cm in flower and fruit.

radially symmetric;

calyx not accrescent, unarmed, 1–2 mm, glabrous to densely pubescent, lobes triangular, shallow;

corolla purple (rarely white), with green and white shiny spots at base of each lobe, deeply stellate, 1.5–2 cm diam., without interpetalar tissue;

stamens equal;

anthers oblong, slightly tapered, 4.5–6 mm, dehiscent by terminal pores that often open into longitudinal slits;

ovary glabrous.

radially symmetric;

calyx slightly accrescent, unarmed, 4–7.5 mm, densely pubescent, lobes deltate;

corolla purple, stellate-pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, 2–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose.

bright shiny red, globose to ellipsoidal, 0.5–1.5 × 0.5–1 cm, glabrous, without sclerotic granules.

yellow, globose, 1–1.5 cm diam., tomentose, without sclerotic granules.

pale yellow or tan, flattened, 2–3 mm diam., minutely pitted.

yellowish brown, flattened, 1.5–2.5 × 1.5–2 mm, minutely pitted.

, climbing or scrambling, herbaceous or woody, unarmed, to 8–10 m, sparsely to densely pubescent, hairs unbranched and/or dendritic, rarely glabrous.

= 24.

= 24.