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 1.5–3.5 cm, sometimes with pair of pinnatifid pseudostipules at base;

blade compound, elliptic to ovate, 7–15 × 4–9 cm, margins divided into 1–4(–5) pairs of leaflets, leaflet margins entire, base attenuate.

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

terminal, extra-axillary, generally forked or 3-fid, 4–10(–20)-flowered, to 3 cm.

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

articulated near middle, 1.6–3 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, 4–6 mm, glabrous to sparsely pubescent, lobes deltate-acuminate;

corolla white, stellate, 2.8–3.5 cm diam., without interpetalar tissue;

stamens equal;

anthers oblong, slightly tapered, 5–6 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.

green, globose, ca. 1 cm diam., glabrous, without sclerotic granules.

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

dark reddish brown, rounded, 1–2 mm diam., rugose.

= 24, 48, 72.

= 24.