Solanum pumilum

Herbs, perennial, erect, sparsely armed, to 0.2 m, prickles cream to yellowish, straight, to 3.5 mm, moderately to densely pubescent, hairs whitish, sessile, stellate, 4–8-rayed, central ray (1–)2–5-celled and longer than lateral rays. Leaves petiolate; petiole 0.2–1 cm; blade simple, elliptic to obovate, 2.2–8.6 × 1.1–5.1 cm, margins entire, sinuate, or shallowly lobed with 2–6 lobes per side, lobe margins entire, base cuneate to attenuate. Inflorescences extra-axillary, unbranched, 1–4-flowered, 3–7 cm. Pedicels 1–3.5 cm in flower and fruit. Flowers radially symmetric; calyx not accrescent, unarmed or sparsely prickly, 6–7 mm, densely stellate-pubescent, lobes triangular; corolla white, stellate to stellate-pentagonal, 1.8–3 cm diam., with abundant interpetalar tissue at margins and base of lobes; stamens equal; anthers narrow and tapered, 6–7 mm, dehiscent by terminal pores; ovary glabrous. Berries unknown. Seeds unknown.

Phenology: Flowering Apr–May.
Elevation: 80–200 m.

Ala., Ga.

Discussion

Solanum pumilum is endemic to Ketona dolomite outcroppings near the Little Cahaba River in Bibb County and on amphibolite outcroppings near the Coosa River in Chilton and Coosa counties in Alabama. It was collected originally from Georgia in the 1830s from Baldwin and Muskogee counties.

Selected References

None.

Lower Taxa