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 0.1–2.7 cm;

blade simple, narrowly elliptic, 2–21 × 0.5–5.5 cm, margins entire or shallowly lobed, base attenuate to rounded.

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

extra-axillary or leaf-opposed, usually unbranched, 30+-flowered, to 15 cm.

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

0.8–1.5 cm in flower, 1–2 cm and recurved to one side of the inflorescence 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, 1.5–2.5 mm, moderately stellate-pubescent, lobes triangular;

corolla white or violet, stellate, 1.5–2 cm diam., without interpetalar tissue;

stamens equal;

anthers narrow and tapered, 5.5–8 mm, dehiscent by terminal pores, anther tube densely stellate-pubescent within;

ovary glabrous or sparsely pubescent with short-glandular hairs.

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

bright shiny red, globose, 0.5–0.7 cm diam., glabrous, without sclerotic granules.

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

pale tan, flattened, 2–2.5 × 1–1.5 mm, minutely pitted.

= 24, 48, 72.

= 24.