Flora of North America species comparison

petiolate;

petiole 1–4 cm;

blade simple, ovate to ovate-elliptic, 2–10.5 × 1–4.5 cm, margins entire or shallowly sinuate-dentate, base decurrent.

petiolate;

petiole 1–10 cm;

blade simple, elliptic to ovate, 10–25 × 3–15 cm, margins entire, base rounded or acute.

extra-axillary or leaf-opposed, unbranched, usually umbel-like, 3–10-flowered, 0.5–3 cm.

terminal, becoming leaf-opposed, much-branched, 10–50-flowered, 5–20 cm.

erect or spreading, 0.3–1 cm in flower, to 1.5 cm in fruit.

0.2–0.6 cm in flower, erect and 0.4–10 cm in fruit.

radially symmetric;

calyx somewhat accrescent, unarmed, 1–3 mm, lobes deltate, strongly reflexed in fruit;

corolla white, sometimes with yellowish central star, stellate, 0.4–0.8 cm diam., without interpetalar tissue;

stamens equal;

anthers ellipsoidal, 0.7–1.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

radially symmetric;

calyx accrescent and subtending fruit, unarmed, 5–7 mm, densely pubescent, hairs stellate to echinoid, lobes broadly triangular;

corolla white, stellate, 1–2 cm diam., without interpetalar tissue;

stamens equal;

anthers oblong, 2.5–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose, hairs stellate or echinoid.

shiny purplish black, globose, 0.5–1 cm diam., glabrous, with (0–)2–4(–6) sclerotic granules, usually 2–4 larger and 2 smaller.

yellow to orange, globose, 1–2 cm diam., densely pubescent, without sclerotic granules.

pale yellow to brown, 1–1.5 × 0.5–1.5 mm, minutely pitted.

yellowish brown, flattened, 1.5–2 × 1–1.5 mm, minutely pitted.

= 24.

= 24.