Diascia nodosa K.E.Steiner

Annual herb, glabrous, simple or branching from the base. Stems up to 210 mm long, erect or ascending, tetragonal in cross-section, up to 1.5 mm on a side. Basal leaves few to many, rossulate or clustered, simple, petiolate, lamina ovate to elliptic, up to 32 mm long, apex acute, base attenuate, margins irregularly dentate to lobed, teeth or lobes deltoid, acute, petioles up to ca. 18 mm long; stem leaves smaller, becoming reduced upwards, alternate, opposite or verticillate. Flowers axillary, 1-2 open flowers per stem, unscented, nodding in bud, pedicels 4-24 mm long, ascending, broadened and dorsiventrally flattened especially where attached to the flower, elongating and becoming recurved from the base during capsule development but ascending again at time of dehiscence. Calyx lobes five, spreading or somewhat reflexed, more or less equal or the two lower slightly broader and longer, ca. 2.5-3.5 x 0.7-1.0 mm, lanceolate, attenuate, margins with scattered white trichomes. Corolla subrotate, ca. 9.3-12.6 x 9.0-13.2 mm, upper lobes ca. 2.9-4.2 x 2.6-3.8 mm, ovate, rounded to emarginate, lateral lobes, ca. 3.0-4.6 x 2.4-3.6 mm, ovate, rounded to emarginate; lower lobe, ca. 3.2-4.6 x 2.5-3.6 mm, oblong ovate, emarginate; all lobes orange with reddish-orange bases, sometimes turning bluish with age, sparsely glandular pubescent in the lower portions with dark purple trichomes; tube below each upper corolla lobe slightly depressed, yellow, often with a small orange dot; tube below the other lobes orange, lacking spurs or sacs, ca. 1.0 mm deep, but with a central, forward-projecting boss bearing the stamens, boss ca. 1.0-1.5 mm high, yellow, sparsely glandular pubescent. Stamens four, projecting forward from the boss, filaments yellow, anticous filament (appearing in the posticous position due to twisting at the base), more or less straight, ca. 2.7 mm long, posticous filament strongly bent upward (forming a ca. 120° angle) with a large, forward-projecting swelling at the bend, lower portion and swelling densely covered with long dark purple, clavate, glandular trichomes up to 0.5 mm long; anthers ca. 0.5 mm long, strongly coherent, yellow. Ovary ca. 1.4 x 0.7 mm, oblong-ovate in outline, ovules ca. 35-40, style ca. 1.2 mm long, more or less straight, reddish, stigma capitate, surrounded by anthers. Capsule ca. 3.8-6.0 x 1.5-2.0 mm, falciform-ovate in outline, exceeding the calyx; seeds ca. 0.6-0.8 mm, falciform-ovate in outline, dorsal surface with parallel ridges, ventral surface with an oblong cup-shaped outgrowth of the seed coat, lateral surfaces of outgrowth each with a small hemispherical hole.