Flora of North America species comparison

petiolate;

petiole 1–8 cm;

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

petiolate;

petiole 1–4 cm;

blade simple, ovate, 4–16 × 2–6 cm, margins shallowly to moderately lobed with 2–5 lobes per side, lobe margins entire, base cuneate and slightly decurrent.

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

extra-axillary, unbranched, 3–10-flowered, 1–4 cm.

erect and 0.2–0.5 cm in flower and fruit.

0.5–2 cm in flower and fruit.

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.

radially symmetric;

calyx not accrescent, sometimes prickly, 2–5 mm, glabrous, lobes narrowly triangular;

corolla white to cream, stellate, 1.5–2 cm diam., without interpetalar tissue;

stamens equal;

anthers narrow and tapered, 4–6 mm, dehiscent by terminal pores;

ovary glabrous.

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

red, globose, 0.5–0.8 cm diam., glabrous, without sclerotic granules.

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

yellow, flattened, 1.5–2 × 1–1.5 mm, minutely pitted and ridged.

= 24.