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;

petioles 0.5–1.5 cm;

blade simple, ovate to elliptic, (1–)2–6.5 × (0.5–)1–3(–4.5) cm, margins entire or undulate, base rounded to truncate and usually oblique.

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

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

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

0.4–1.5 cm in flower, erect and 1–2 cm 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.

radially symmetric;

calyx not accrescent, unarmed, 8–10(–20) mm, densely stellate-pubescent, lobes long-triangular to linear-lanceolate;

corolla violet, pentagonal, 2.5–4(–5) cm diam., with abundant interpetalar tissue;

stamens equal or slightly unequal;

anthers narrow and tapered, 6–10 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.

light green, sometimes with darker mottling, drying dark brown or reddish brown, globose, 1–1.5(–2) cm diam., glabrous, cracking open to expose seeds, without sclerotic granules.

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

dark brown, flattened, 2–3 mm diam., minutely pitted.

= 24, 48, 72.