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 0.2–0.5 cm;

blade simple, elliptic, 0.9–6.8 × 0.6–2.2 cm, margins entire, base acute to attenuate or decurrent.

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

leaf-opposed, unbranched, 5–20-flowered, 0.3–1.2 cm.

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

ca. 0.5 cm in flower, ca. 1.2 cm and erect 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 somewhat accrescent, unarmed, 1.5–2 mm, glabrous, lobes deltoid;

corolla white, often tinged with lavender, stellate, 0.7–1 cm diam., without interpetalar tissue;

stamens equal;

anthers oblong, 1.5–2 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

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, 0.7–1.2 cm diam., glabrous, without sclerotic granules.

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

pale yellow or tan, flattened, ca. 3 × 2.5 mm, minutely pitted.

= 24.

= 24.