Compilation
Wahlenbergia huillana

Annual ascending or decumbent, rarely erect herb, 4–40 cm. tall, usually much branched from the base. Stem ± hirsute, rarely glabrescent. Leaves up to 8–40 x 2–10 mm., narrowly elliptic to elliptic or oblanceolate, acute to almost rounded with attenuate base, ± hirsute or glabrous; margin slightly incrassate, ± undulate–crenate; midvein protruding beneath, lateral veins obscure. Inflorescence not well demarcated, lax. Flowers sessile or shortly pedicellate; pedicel elongating in fruit up to 10 mm. Hypanthium narrowly obconical, 5–10–nerved, glabrous or hirsute. Calyx–lobes 3–5, 1·5–5(10) mm. long, often of varying length, narrowly triangular to oblanceolate or narrowly oblong, glabrous or ± hirsute, sparsely denticulate. Corolla 2·4–4(5) mm. long, white or blue; Jobes 3–4(5), united c. halfway. Stamens 3–4(5), 2–3·2 mm. long; filament–bases narrowly triangular to broadly angular–obovate, glabrous or ciliate; anthers 0·6–1·6 mm. long. Style glabrous or rarely hairy below, eglandular; lobes 2, 0·5–1·6 mm. long, often slightly unequal in length; pollen–collecting hairs present on style–lobes only. Capsules up to 10 mm. long, obovoid to narrowly obconical or cylindrical, often slightly curved upwards, prominently 5–10 nerved, glabrous or hirsute. Seeds 0·5–0·8 mm. long, elliptic in outline, often ± reniform, slightly compressed; testa sulcate, rarely with hair–like projections.