Streptocarpus trabeculatus Hilliard

Stemless, monocarpic herb. Leaf 1, oblong, up to 400 x 160 mm, base obtuse, apex withered, upper surface rugose, light green, scabridulous, veins impressed, lower paler densely pilose with glandular and eglandular hairs, veins very prominent, midrib very thick and merging into the short thick hypocotyl. Inflorescences cymose, several in acropetal succession from base of midrib and apex of hypocotyl, crowded, many flowers expanded simultaneously. Peduncle 20-100 mm long, stout, reddish-brown or green, pubescent with glandular and eglandular hairs. Bracts elliptic, up to 5 x 3-5mm, green, pubescent. Pedicel c. 6 mm long, almost doubling in length in fruit, reddish-brown to green, pubescent, with occasional glandular hairs. Flower up to 25 mm long. Calyx 5-partite, lobes lanceolate, 3 x 1 mm, green, pubescent. Corolla bilabiate, tube narrowly subcylindric, sharply deflexed about the middle and narrowed, expanded in throat, c. 8 mm long, base 4 mm diam., throat 4-5 mm diam., white to pale violet, pilose with glandular and eglandular hairs; limb oblique, upper lobes divergent, sub-orbicular, 4 x 3-5 mm, lower lip 10-13 mm long, lobes suborbicular, 6 x 4-5 mm, all lobes pale violet, glandular inside, paler, sparsely pubescent outside, base of lower lip and part of floor of tube white with deep violet streaks. Stamens: fertile 2, filaments inserted two-thirds up corolla tube, 3 mm long, curved, curve dilated, white suffused deep violet, sparsely glandular; anthers applanate, 1 mm long, medium violet, connective white, sparsely glandular; staminodes 3, posterior minute, laterals 1 mm long, white. Disc annular. Ovary 5 mm long, green, pubescent; style terete, 5 mm long, glandular-pubescent; stigma stomatomorphic, papillose, white. Capsule of 2 spirally twisted valves, 16-36(25 ± 4) mm long, 3 mm diam., persistent style-base prominent.