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 0.5–3.5 cm;

blade simple, ovate to ovate-lanceolate, 4.5–11 × 2.5–7 cm, margins entire to sinuate-dentate, base cuneate to rounded or slightly decurrent.

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

extra-axillary, unbranched, (2–)3–8-flowered, 2.5–3.5 cm.

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

spreading in flower, recurved to reflexed in fruit, 0.5–1 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, 2–5 mm, sparsely pubescent, lobes lanceolate, sometimes reflexed in fruit;

corolla white, sometimes tinged with purple, with yellowish central star, stellate, 0.5–1 cm diam., without interpetalar tissue;

stamens equal;

anthers ellipsoidal, 1.8–2.5 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.

shiny purplish black, globose, 1–1.5 cm diam., glabrous, with 2–4 sclerotic granules.

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

yellowish to brown, flattened, 1.8–2 × 1.5–1.6 mm, finely reticulate.

= 24, 48, 72.

= 24.