Flora of North America species comparison

petiolate;

petiole 1–5 cm;

blade simple, lanceolate to oblong, 5–15 × 0.5–3 cm, margins undulate, subentire to sinuate or shallowly lobed, lobe margins entire, base truncate to cuneate.

petiolate;

petiole 2–6 cm;

blade simple to compound, broadly ovate, 5–10 × 2.5–8 cm, margins 2–3 times lobed or divided with 3–4 main leaflets per side, leaflets with acute lobes, base truncate.

extra-axillary, unbranched, 3–5(–7)-flowered, 3–5 cm.

extra-axillary, unbranched, 5–9-flowered, 4–7 cm.

1–3 cm in flower, reflexed and 1–3 cm in fruit.

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

radially symmetric;

calyx not accrescent, unarmed or with sparse prickles, 5–10 mm, densely silvery-stellate-pubescent, lobes linear-lanceolate;

corolla pale to deep blue or violet, rarely white, pentagonal-stellate, 2–3(–3.5) cm diam., with abundant interpetalar tissue;

stamens equal;

anthers narrow and tapered, 6–9 mm, dehiscent by terminal pores;

ovary glabrous to densely stellate-pubescent.

bilaterally symmetric;

calyx accrescent and tightly covering fruit, densely prickly, 3–5 mm, densely pubescent, lobes linear;

corolla violet or blue, pentagonal-stellate, 1.4–2 cm diam., with interpetalar tissue at the margins and bases of lobes;

stamens unequal, lowermost much longer and curved;

anthers narrow and tapered, dehiscent by terminal pores, short anthers yellow, 4–5.5 mm, longer anther purplish, 5.5–8.5 mm;

ovary glabrous.

yellow to orange, drying brown or black, globose, 0.5–1.5 cm diam., glabrous, without sclerotic granules.

brown, globose, 0.8–1 cm diam., glabrous, dry, without sclerotic granules.

yellowish, flattened, 3–5 × 2–4 mm, minutely pitted.

dark brown, flattened, 2.6–3 × 2–2.5 mm, minutely pitted.

= 24, 48, 72.

= 24.