Flora of North America species comparison

petiolate;

petiole 1–10 cm;

blade simple, elliptic to ovate, 10–25 × 3–15 cm, margins entire, base rounded or acute.

petiolate;

petiole 0.2–1 cm;

blade simple, elliptic to obovate, 2.2–8.6 × 1.1–5.1 cm, margins entire, sinuate, or shallowly lobed with 2–6 lobes per side, lobe margins entire, base cuneate to attenuate.

terminal, becoming leaf-opposed, much-branched, 10–50-flowered, 5–20 cm.

extra-axillary, unbranched, 1–4-flowered, 3–7 cm.

0.2–0.6 cm in flower, erect and 0.4–10 cm in fruit.

1–3.5 cm in flower and fruit.

radially symmetric;

calyx accrescent and subtending fruit, unarmed, 5–7 mm, densely pubescent, hairs stellate to echinoid, lobes broadly triangular;

corolla white, stellate, 1–2 cm diam., without interpetalar tissue;

stamens equal;

anthers oblong, 2.5–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose, hairs stellate or echinoid.

radially symmetric;

calyx not accrescent, unarmed or sparsely prickly, 6–7 mm, densely stellate-pubescent, lobes triangular;

corolla white, stellate to stellate-pentagonal, 1.8–3 cm diam., with abundant interpetalar tissue at margins and base of lobes;

stamens equal;

anthers narrow and tapered, 6–7 mm, dehiscent by terminal pores;

ovary glabrous.

yellow to orange, globose, 1–2 cm diam., densely pubescent, without sclerotic granules.

unknown.

yellowish brown, flattened, 1.5–2 × 1–1.5 mm, minutely pitted.

unknown.

= 24.