Pachycarpus natalensis N.E.Br.

Tuberous-rooted perennial, tuber as long as or longer than stem. Stem 300-520 mm tall, slender to stout, simple or branched at the base, ± glabrous or pubescent. Leaves ascending-spreading; petiole 4-13 mm long; blade 42-77 x 23-47 mm, narrowly ovate or narrowly oblong to broadly ovate, broadly oblong or broadly elliptic, ± glabrous to densely pubescent above, puberulous or pubescent below with scabrous midvein, margins pubescent or scabrous. Inflorescence umbellate, 2-5-flowered, sessile or subsessile, rarely pedunculate, at upper nodes and terminal; peduncules 0-5(-30) mm long, pubescent. Bracts 0.5-0.0 mm long, narrowly linear, acute or acuminate, pubescent below. Pedicels 8-20 mm long, pubescent. Sepals 8-4 mm long, lanceolate, linear-lanceolate, narrowly elliptic or ovate, acute or acute-acuminate, glabrous or slightly pubescent towards the apex above, pubescent below. Corolla 14-21 mm long, lobed almost to the base; lobes spreading horizontally with the apical half or tips up-curved or slightly reflexed in the old flowers, 11-17 x 5-11 mm, narrowly to broadly elliptic, broadly ovate or suborbicular, apex obtuse, margins slightly re volute towards the apex and imbricate at the base, green or greenish-yellow with purple splotches, glabrous above, puberulous to pubescent below. Corona lobes 6-14 mm long, the basal part narrowly linear, claw-like and spreading horizontally, often slightly dilated at the extreme base, 1.5-4.0 mm long, 0.7-1.5 mm broad with a pair of subcontiguous oblong or subdeltoid keels at the base, keels 0.8-2.0 mm long, 1.5-3.5 mm high, obliquely acute, obtuse or truncate, often with a narrow wing on the inner margin extending to the broadest part of the claw-like base, beyond the keels the lobe dilated to form a lanceolate, ovate or broadly ovate-cordate blade rising vertically at first and then inflexed over the claw and the keels, blade 4-8(-10) mm long, 4-8 mm broad at the base, apex acute or ± mucronate, margin frequently undulating, lobes dark purple with white keels. Anther wings 1.3-2.4 mm long, slightly oblique, outer margin straight or ± concave with the basal angles slightly upcurved; appendages 2.0-4.6 mm long, ovate, elliptic or ± obovate to broadly ovate or broadly elliptic, acute, margins ± reflexed, erect at first and then curved over and much above the style apex. Follicles 93-100 x 25 mm, narrowly ovoid, 6-winged, apex obtuse.