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 2–7 cm;

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

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

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

erect and 0.2–0.5 cm in flower and fruit.

1–1.5 cm in flower, erect and 1–1.5 cm in 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.

bilaterally symmetric;

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

corolla violet or blue, pentagonal-stellate, with narrowly deltate lobes, 1–1.5 cm diam., with sparse 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.

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

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

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

dark brown, flattened, 2.5–3 × 2–2.5 mm, reticulately wrinkled or merely undulate.

= 24.