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 1–2.5(–4) cm;

blade simple, elliptic to obovate, 3–11(–14) × 1.6–5.5(–9) cm, margins entire or slightly undulate, occasionally with 2 small lobes at base, lobe margins entire, base truncate or acute.

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

terminal or lateral, leaf-opposed or extra-axillary, usually once-branched, occasionally more, 20–30-flowered, (2–)4–10 cm.

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

inserted into small sleeve on inflorescence axis, 1.5–2 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, 6–7 mm, densely pubescent, lobes deltate;

corolla violet to purple with or without green spots at base of lobes, spots usually small and not confluent, rotate, 3–4.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers ellipsoidal, 4.5–5 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 green, turning yellow then black, globose, 3–4 cm diam., glabrous, without sclerotic granules.

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

reddish brown, plump to flattened, 1.5–2 × 1–1.5 mm, minutely pitted.

= 24, 48, 72.