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 1–4 cm;

blade simple, ovate, 6–15 × 3–10 cm, margins sinuate or shallowly to deeply lobed with 2–4 lobes per side, lobe margins entire to coarsely lobed, base truncate to cuneate and often oblique.

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

extra-axillary, 1–several times branched, to ca. 20-flowered, 6–14 cm.

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

1–2.5 cm in flower, 1.5–3 cm and curved 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 or with sparse prickles, 6–14 mm, densely stellate-pubescent, lobes ovate-lanceolate;

corolla lavender, pale blue, or sometimes white, stellate to stellate-pentagonal or rotate-stellate, 2–4.6 cm diam., with abundant interpetalar tissue at margins and bases of lobes;

stamens equal;

anthers narrow and tapered, 5–9 mm, dehiscent by terminal pores;

ovary minutely pubescent, hairs simple and stellate, rarely densely stellate-pubescent, glandular and eglandular.

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

yellow, subovoid to depressed-globose, 1–2 × 1–2.5 cm, glabrous, without sclerotic granules.

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

yellow, flattened, 1.9–3 × 1.7–2.5 mm, minutely pitted.

= 24, 48, 72.

= 72.