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, 4–10(–15) × 3–8 cm, margins bipinnately lobed or divided with 3–4 main leaflets per side, these with obtuse or rounded lobes, base truncate.

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

extra-axillary, unbranched, 4–10-flowered, 3–11 cm.

erect and 0.2–0.5 cm in flower and fruit.

1–2 cm in flower, 1–2 cm and erect 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, 2.5–3.8 mm, densely glandular-pubescent, lobes linear-lanceolate;

corolla violet or blue, pentagonal-stellate, 2.5–3.5 cm diam., with interpetalar tissue at margins and bases of lobes;

stamens unequal, lowermost much longer and curved;

anthers narrow and tapered, dehiscent by terminal pores, short anthers yellow, 6–10 mm, longer anther purplish, 11–16 mm;

ovary glabrous.

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

brown, globose, 0.8–1.2 cm diam., glabrous, dry, without sclerotic granules.

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

dark brown, flattened, 2.3–3 × 2–2.5 mm, reticulately wrinkled, ridged, or undulate.

= 24.

= 24.