Flora of North America species comparison

petiolate;

petiole 0.5–3(–7) cm;

blade simple, ovate, 1–5(–9) × 0.5–3(–6) cm, margins entire to coarsely and irregularly toothed, base truncate to acute and decurrent.

petiolate;

petiole 0.5–3 cm;

blade simple, ovate to elliptic, 3–8 × 1.5–4 cm, margins deeply lobed to pinnatifid with 3–4 lobes per side, these shallowly lobed, base obtuse.

extra-axillary or leaf-opposed, unbranched, racemelike, 2–7(–14)-flowered, 2–4 cm.

extra-axillary, unbranched, 5–8-flowered, 8–12 cm.

0.5–1 cm in flower and fruit, nodding or deflexed downward in fruit.

0.4–1 cm in flower, 1–1.8 cm and erect in fruit.

radially symmetric;

calyx not accrescent, unarmed, 2–3 mm, sparsely pubescent, lobes deltate;

corolla white with yellow-green to brownish central star, stellate, 1–2 cm diam., without interpetalar tissue;

stamens equal;

anthers ellipsoidal and slightly tapered towards the tips, (2.5–)3–4.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

bilaterally symmetric;

calyx accrescent and tightly covering fruit, moderately prickly, 4–6 mm, moderately pubescent, lobes narrowly triangular;

corolla white, rotate-stellate, 2–2.5 cm diam., with abundant interpetalar tissue;

stamens unequal, lowermost much longer and curved;

anthers narrow and tapered, dehiscent by terminal pores, short anthers 5–6 mm, longer anther 9–11 mm;

ovary glabrous.

dull purplish black, globose, 0.5–1 cm diam., glabrous, with (2–)6–8 sclerotic granules per fruit.

brown, globose, 1–1.2 cm diam., glabrous, dry, without sclerotic granules.

pale yellow to tan, flattened, 1.5–2 × 1–1.5 mm, finely reticulate.

dark brown, flattened, reniform, ca. 1.5 × 1 mm, reticulately ridged.

= 24.