[+][+][+] Fruit a berry with the unaltered calyx persistent at its base.
5. Lycium. Corolla funnel-form or tubular, not plaited. Berry small, 2-celled.
[+][+][+][+] Fruit a capsule.
6. Hyoscyamus. Calyx urn-shaped, enclosing the smooth 2-celled capsule, which opens by the top falling off as a lid. Corolla and stamens somewhat irregular.
7. Datura. Calyx prismatic, 5-toothed. Capsule prickly, naked, more or less 4-celled, 4-valved. Corolla funnel-form.
8. Nicotiana. Calyx tubular-bell-shaped, 5-cleft. Capsule enclosed in the calyx, 2-celled.
1. SOLÀNUM, Tourn. Nightshade.
Calyx and wheel-shaped corolla 5-parted or 5-cleft (rarely 4–10-parted), the latter plaited in the bud, and valvate or induplicate. Stamens exserted; filaments very short; anthers converging around the style, opening at the tip by two pores or chinks. Berry usually 2-celled.—Herbs, or shrubs in warm climates, the larger leaves often accompanied by a smaller lateral (rameal) one; the peduncles also mostly lateral and extra-axillary.—A vast genus, chiefly in warmer regions, including the Potato (S. tuberòsum) and the Egg-plant (S. Melongèna); while the Tomato (Lycopérsicum esculéntum) is closely related. (Name of unknown derivation.)
[*] Not prickly; anthers blunt; flowers and globose naked berries small.
[+] Perennial, climbing or twining.