Description
        Stachytarpheta jamaicensis (L.) Vahl Undershrub, up to 50 high ; stem 4-angled, terete, glabrous. Leaves opposite, elliptic-obovate, 5 - 8 x 2.6 - 5 cm, cuneate at base, crenate at margin, acute-obtuse at apex, appressed pubescent along nerves beneath; 4 - 6-pairs; petiole subsessile. Spikes terminal, up to 50 cm long. Flowers ca. 1 cm across, bluish-violet; bracts ovate, 05 mm long, hyaline, scabrous along the nerves, acuminate at apex. Calyx tubular, 5.5 mm long, shortly 4-teeth, 0.6 mm long, puberulous. Corolla salverform, tube cylindric, 07 mm long, glabrous. Stamens 2; fialemtn 01 mm long, hairy; anther divercate, 1.5 mm long. Ovary subflattened, oblong, 1.5 - 02 mm long; 2-loculed; ovules 1; style filiform, 6.5 mm long, glabrous; stigma capitate, rounded, 0.3 mm long. Pyrenes oblong, 4.5 mm long, glabrous, shortly peaked at apex; seeds 1.