Compilation
Hedyotis gerrardii

Annual or perennial, erect to suberect, ascending or straggling herbs, (6) 15–50(60) cm. tall; one to many branched slender stems from a ± woody base; stems slightly ribbed, glabrous, scabrid or ± densely hirsute, often becoming glabrous towards the apex. Leaves (14)19–29(32) x (0.5)1–5(7) mm., narrowly linear, linear-lanceolate to lanceolate-elliptic, rarely filiform, acute and shortly aristate, arista 0.5–1 m. long, glabrous or hirsute, mostly ± scabrid to hirsute on upper surface along margins and midrib beneath, upper leaves ± glabrous or hirsute at the base, margins revolute; stipular sheath (0.9)1.2–2(2.4) mm. long, hirsute, produced into (2, 3) 4–6 reflexed filiform fimbriae (1.4)1.8–4.5(6) mm. long. Inflorescences usually with 2 or, more rarely, 3 with additional accessory, flowers at a node, pedicellate or rarely subsessile; peduncles (3)24–34(79) mm. long; pedicels (1)3–7(15) mm. long, glabrous. Calyx tube (0.5)0.7–1.3(1.5) x (0.4)0.9–1.4(1.6) mm., obovate-subglobose glabrous; lobes narrowly triangular to narrowly ovate-triangular, ending in a short seta or mucro, margins with short stiff hairs, otherwise glabrous. Corolla lobes variously coloured, white, cream, yellowish, blueish, mauve, purple, pink or red, sometimes bicoloured on the same plant; buds usually darker in colour (red or pink), open flowers becoming paler with age?; back of lobes and tubes paler or brownish to pinkish green or greenish white, interior and exterior glabrous or very rarely in longer tubed forms throat inside very slightly papillose; tube altogether (2.7)3–6.5(7) mm. long, the dilated part (0.7)1–2.1(2.4) x (0.7)0.8–1.2(1.45) mm., the narrow part (0.4)0.5–0.9(1.1) mm. wide; lobes (0.9)1–2.2(2.4) x (0.6)0.8–1.2(1.3) mm., ovate-triangular to ovate-elliptic, subacute to slightly apiculate. Anthers narrowly ovate, 1–1.5 mm. long; pollen (3)4(6) colporate. Style and stigma together as long as the narrow tube, stigma tip just touching anthers or ± isostylous. Capsules (1)1.2–2.1(2.5) mm. long and (1.8)2–2.9(3.3) mm. wide, hemispherical to subglobose, glabrous. Seeds brownish, c. 0.4 mm. long, round-subconic.