Flora of North America species comparison

petiolate;

petiole 1–3.5 cm;

blade simple, ovate-lanceolate, 3–10 × 2–5 cm, margins entire to sinuate-dentate, base cuneate to truncate.

petiolate;

petiole 2–7 cm;

blade simple to compound, broadly ovate to deltate, 4–11 × 4–8 cm, margins twice-lobed to twice-divided with 2–3 main leaflets per side, leaflets with obtuse or rounded lobes, base truncate.

extra-axillary, forked, umbel-like or racemelike, 6–14-flowered, 1.5–3 cm.

extra-axillary, unbranched, 5–9-flowered, 4–10 cm.

straight and spreading and 0.5–1 cm in flower, strongly reflexed and 0.5–1 cm in fruit.

1–2 cm in flower, erect and 1–2 cm in fruit.

radially symmetric;

calyx not accrescent, unarmed, 3–4 mm, sparsely pubescent, lobes obtuse;

corolla white to pale purple with yellowish or greenish central star, stellate, 1–2 cm diam., with sparse interpetalar tissue;

stamens equal;

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

ovary glabrous.

bilaterally symmetric;

calyx accrescent and tightly covering fruit, densely prickly, 4.5–6.5 mm, sparsely glandular-pubescent, lobes lanceolate;

corolla violet or blue, pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens unequal, lowermost much longer and curved;

anthers narrow and tapered, dehiscent by terminal pores, short anthers 2–4 mm, longer anther 3.5–5 mm;

ovary glabrous.

dull green to purple, globose, 0.5–0.9 cm diam., glabrous, with 6–14 sclerotic granules per fruit.

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

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

dark brown, flattened, 2.5–3 × 2–2.5 mm, minutely pitted and weakly ridged or faceted.

= 72.