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 0.2–1 cm;

blade simple, elliptic to obovate, 2.2–8.6 × 1.1–5.1 cm, margins entire, sinuate, or shallowly lobed with 2–6 lobes per side, lobe margins entire, base cuneate to attenuate.

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

extra-axillary, unbranched, 1–4-flowered, 3–7 cm.

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

1–3.5 cm in flower and 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.

radially symmetric;

calyx not accrescent, unarmed or sparsely prickly, 6–7 mm, densely stellate-pubescent, lobes triangular;

corolla white, stellate to stellate-pentagonal, 1.8–3 cm diam., with abundant interpetalar tissue at margins and base of lobes;

stamens equal;

anthers narrow and tapered, 6–7 mm, dehiscent by terminal pores;

ovary glabrous.

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

unknown.

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

unknown.

= 24, 48, 72.