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 0.5–3 cm;

blade simple, elliptic to lanceolate, 1.5–8 × 1–4 cm, margins entire or nearly so, base cuneate to attenuate.

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

extra-axillary, unbranched or rarely forked, umbel-like, 3–8-flowered, 1–2 cm.

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

0.5–1 cm in flower and fruit, recurved to reflexed 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, 1.5–3 mm, sparsely pubescent, lobes deltate, reflexed in fruit;

corolla white with yellowish central star, stellate, 1–1.5 cm diam., with sparse interpetalar tissue;

stamens equal;

anthers ellipsoidal, 2–3 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

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

dull purplish black, globose, 0.5–1.5 cm diam., glabrous, without (or rarely with 2) sclerotic granules.

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

pale yellow, flattened, 1–1.3 × 0.8–0.9 mm, minutely pitted.

= 24, 48, 72.

= 24.