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 1–3 cm;

blade simple, narrowly ovate to elliptic, 1.5–5(–7) × 0.5–3.5 cm, margins entire or sinuate, base cuneate to decurrent.

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

extra-axillary or leaf-opposed, unbranched or rarely forked, umbel-like, 3–7(–10)-flowered, 1–3(–4) cm, fruiting peduncles sharply reflexed from base.

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

0.5–1 cm in flower and fruit, reflexed downward 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, 2–3.5 mm, sparsely pubescent, lobes deltate, appressed in fruit;

corolla white or purplish, with greenish, yellowish, or brown central star, stellate, 0.8–1.5 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 cm diam., glabrous, without sclerotic granules.

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

pale yellow, flattened, 1–1.5 × 1–1.5 mm, minutely pitted.

= 24, 48, 72.

= 24.