Gerardiina

Annual or perennial herbs, erect or ascending, 0.35-0.8 m in height, hispid; stems usually simple. Leaves opposite, sessile, erect or suberect, linear-lanceolate, entire, thick, hispid. Flowers opposite, pedicellate, bracteate, in terminal, elongated, rarely branched racemes. Bracts +/- equal to or shorter than pedicels; bracteoles 0. Calyx 5-dentate, somewhat leathery, glandular-punctate; tube campanulate; lobes subequal, obtuse, valvate. Corolla campanulate, oblique, 5-lobed, slightly bilabiate; tube narrow at base, dilating and +/- funnel-shaped above, hairy on inside at base of upper lip; lobes subequal, or upper 2 smallest, rounded; posterior lobes interior in bud. Stamens 4, didynamous, arising at top of narrow portion of tube, included; filaments linear, anterior pair twice as long as posterior pair and long-pilose above middle; anthers bithecate; thecae subequal, diverging; staminodes 0. Ovary bilocular, subovoid, acute, glabrous; ovules many on a thick placenta; style filiform, linear, arching above, glabrous, persistent, equalling or exceeding longer stamens; stigma slightly dilated, flattened. Fruit an ovoid, loculicidal capsule, equal to or somewhat longer than enclosing calyx. Seeds many, linear or linear-cuneiform, terete.