Sebaea sulphurea Schltdl.

Slender erect annual herbs 2-15 cm high, simple or branched from the base. Leaves 2-9 mm long, 1.5-6.5 mm broad, ovate to suborbicular-ovate acute. Inflorescence 1-few-flowered, lax or compact; bracts ovate-lanceolate, acuminate. Calyx of 5 segments, each 4-8.5 mm long, 1.25-2 mm broad, elliptic to oblong-elliptic or oblong-lanceolate, acuminate, the sides hyaline, or somewhat opaque, free or almost so, with a soft keel-wing 0.5-1 mm broad, broadest at or below the middle. Corolla bright yellow; tube 4.25-8 mm long; lobes 5.75-11.25 mm long, 2.25-5 mm broad, ovate-elliptic to ovate, rounded or acute, sometimes apiculate, clawed. Filaments 0.5-1 mm long, inserted in the corolla-sinuses; anthers 1.25-2 mm long, each with a medium to large, stipitate apical and 2 small, stipitate, basal glands. Style and stigma 5-9 mm long, with a swelling below the middle; stigma large, 1.5-5.5 mm long, ligulate, 2-lobed. Capsule suborbicular to obovoid.