Flora of North America species comparison

petiolate;

petiole 1–8 cm;

blade simple, elliptic to ovate, 11–31 × 4–14 cm, margins entire, base acute, often with smaller axillary leaves.

petiolate;

petiole 1–3 cm;

blade simple, ovate to elliptic, 4.5–13 × 2–5.5 cm, margins entire, base rounded to acute.

terminal, becoming leaf-opposed, much-branched, 50–100-flowered, 5–24 cm.

terminal to extra-axillary, much-branched, with numerous flowers, 2–8 cm.

erect and 0.2–0.5 cm in flower and fruit.

erect and 0.7–1 cm in flower and fruit.

radially symmetric;

calyx slightly accrescent, unarmed, 4–7.5 mm, densely pubescent, lobes deltate;

corolla purple, stellate-pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, 2–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose.

radially symmetric;

calyx not accrescent, unarmed, 2–4 mm, moderately stellate-pubescent, lobes triangular;

corolla white, stellate, 1.5–2 cm diam., without interpetalar tissue;

stamens equal;

anthers narrow and tapered, 3–4.5 mm, dehiscent by terminal pores;

ovary glabrous or sparsely glandular-pubescent.

yellow, globose, 1–1.5 cm diam., tomentose, without sclerotic granules.

red, globose, 0.5–1 cm diam., glabrous or sparsely glandular-pubescent, without sclerotic granules.

yellowish brown, flattened, 1.5–2.5 × 1.5–2 mm, minutely pitted.

yellow, flattened, 2.5–3.5 × 1.5–2.5 mm, minutely pitted.

= 24.

= 24.