(nat) Tobacco, paka
Erect, stout annual or short-lived perennial herbs; stems sparsely branched, viscid pubescent with abundant glandular hairs. Leaves green, simple, alternate, often large, coarse, elliptic to ovate or obovate, up to 50 cm long, usually decreasing in size up the stem, glandular pubescent, margins entire or undulate, apex acute to acuminate, base decurrent, amplexicaul, lower leaves with winged petioles, upper leaves subsessile. Flowers in short, dense panicles, pedicels 5- 15 mm long; calyx tubular, 12-20 mm long, the tube 10-15 mm long, the lobes narrowly triangular, acute, sometimes unequal, shorter than calyx tube; corolla salverform, the limb white, pink, or reddish, 5-lobed to pentagonal, 30-50 mm in diameter, the tube proper shorter and narrower than throat cylinder, 4-5 cm long, throat cup distinct; stamens unequal, the upper 4 long, the fifth shorter, all inserted near base of corolla tube and adnate to it for ca. 1 cm; filaments 2.5-4 cm long, pubescent at base. Capsules ellipsoid to ovoid, equalling or exceeding calyx, 1.5-2.5 cm long. Seeds numerous, ca. 0.5 mm long, globose to oblong, testa wavy-reticulate. Self-compatible; [2n = 23, 24, 46, 48, 72.] Native to western south America, it was introduced to North America in pre-Columbian times and soon reached Europe after the Conquest; in Hawaii naturalized in dry, rarely mesic, disturbed sites, usually coastal, 0-25(-140) m, on Laysan and all of the main islands. First collected on Hawaii in 1825 (Macrae s.n., BM).