Pygmaeothamnus Robyns

Subshrubby herbs mostly under 30 cm. tall, with several–many stems from a woody rhizome. Leaves opposite or in whorls of 3–4, mostly fairly shortly petiolate; stipules triangular, usually shortly subulate-caudate at the apex. Flowers in simple or branched cymes or fascicles, sometimes borne at lower often leafless nodes; bracts small. Calyx-lobes 5, erect, linear-oblong, oblong, lanceolate or ± triangular, obtuse or subacute. Buds shortly apiculate, usually 5-tailed, glabrous or pubescent. Corolla-tube cylindric, with a ring of deflexed hairs within, sparsely to densely pilose at the throat; lobes reflexed, usually shortly apiculate, glabrous within, about equalling the tube. Stamens inserted at the throat, the anthers oblong or lanceolate, just exserted. Ovary 2-locular, each locule with a solitary pendulous ovule; style slender, slightly exserted; stigmatic club cylindric or subcapitate, deeply bilobed. Fruit globose or obpyriform, didymous or asymmmetrical, containing (1–)2 pyrenes.