Huynhia Greuter (1981: 37).

Type: — Huynhia pulchra (Willdenow ex Roemer & Schultes) Greuter & Burdet (1981: 37).

Perennial, erect to decumbent hispid herbs. Stems single to many, branched or unbranched, arising from a taproot. Inflorescence terminal, simple or forked, of scorpioid cymes, bracteate. Calyx divided nearly to the base, lobes accrescent, usually shorter than the corolla tube. Corolla hypocrateriform, yellow dark red to purplish or blue, sometimes with conspicuously spotted limb, lobes strongly imbricate in bud, usually spreading or widely ascending, entire to sometimes lacerate, throat puberulous inside and outside. Stamens inserted irregularly at different levels (3 distal + 2 proximal); anthers oblong to narrowly oblong, not exerted. Flowers heterostylic. Style inflated (except H. pulchra), not exserted; stigma capitate, shallowly or deeply bilobed, inflated or filiform. Usually, one to four nutlets developing, trigonal, ovoid-pyramidal, usually broadest at the base, rough or smooth, verrucose, rugose or rugulose; venter usually angulate, keeled.