Solanum marginatum
Suppl. Pl., 147. 1782.
Herbs or shrubs, erect, moderately armed, 1–2 m, prickles pale orange, straight or slightly curved, 5–12 mm, densely bright white-pubescent, hairs short-stalked, stellate, 10–20-rayed, central ray equal to lateral rays. Leaves petiolate; petiole 1.5–6 cm; blade simple, ovate, 8–23 × 7–13 cm, margins coarsely lobed with 3–4 lobes per side, lobe margins entire to coarsely lobed, base cordate. Inflorescences extra-axillary or leaf-opposed, occasionally sessile, unbranched or forked, 6–15(–30)-flowered, 3.5–8 cm. Pedicels 0.5–2 cm in flower, pendent and 2–3 cm in fruit. Flowers radially symmetric; calyx accrescent and subtending fruit, sparsely to moderately armed, 7–15 mm, densely stellate-pubescent, lobes broadly deltate; corolla white to pale purple, rotate-stellate, 2.5–4 cm diam., with abundant interpetalar tissue; stamens equal; anthers narrow and tapered, 5.5–7 mm, dehiscent by terminal pores; ovary moderately stellate-pubescent. Berries yellow, dark green mottled with white when young, globose, 3.5–4(–5) cm diam., glabrous, without sclerotic granules. Seeds light brown, flattened, 2.5–3.5 × 2–2.5 mm, minutely pitted. 2n = 24.
Phenology: Flowering May–Aug.
Habitat: Disturbed sites.
Elevation: 0–1000 m.
Distribution
Introduced; Calif., Asia, Africa (Eritrea, Ethiopia), introduced also in South America, Europe, Atlantic Islands (Canary Islands), Australia.
Discussion
Solanum marginatum is naturalized along the central and southern coast of California, where it has been listed as a noxious weed by the California Department of Food and Agriculture. There are few recent collections.
Selected References
None.