Solanum torvum Sw.
Fruit a berry with 210–220 seeds. Seeds ovate to broadly ovate, broadly elliptic, or nearly circular, infrequently C-shaped in outline, compressed, variously bent or curved due to crowding, 2–3 mm long, 1.5–2 mm wide, 0.3–0.6 mm thick, cross section narrowly oblong to narrowly elliptic. Glossy, light to dark yellowish-brown. Surface reticulations distinctly undulate. Hilum subbasal, marginal, a narrow slit 0.5–0.8 mm long, flush to slightly recessed, slit closed or with a small central +/– circular hole. Embryo linear-curved, seen twice in cross section; endosperm readily visible.
Solanaceae seeds of moderate size (over 1.5 mm long) are often difficult to distinguish from one another. Characters that may aid in identification are size range, seed outline, surface reticulation (if visible), hilar shape, and embryo shape. Testa color is not a reliable character, as it may be affected by aging and length of time spent in a mature berry.
Lycium ferocissimum Miers
Solanum tampicense Dunal
Solanum viarum Dunal
tropical and subtropical areas throughout the world: West and Central Africa, Indian subcontinent, Southeast Asia, China, Japan, Australia, and many Pacific Islands; in the western hemisphere: Mexico, Central America, Greater and Lesser Antilles, South America (Brazil, Ecuador, French Guiana, Guyana, Venezuela), United States
native to the Caribbean
prefers moist, fertile soil, will tolerate drought; wet thickets, dry brushy plains, woodland clearings, rocky hillsides; a weed in pastures, open native vegetation, swamps, roadsides, waste places
Solanum torvum is a prickly shrub or small tree, up to 5 m tall. It is cultivated in the tropics for its sharp-tasting, immature fruits. The plant may have been introduced into Florida for cultivation trials before 1900 and has been found cultivated there within the last 10 years. This plant forms impenetrable thickets in pastures, preventing animals from grazing. The seeds are dispersed by birds and bats.