Alonsoa peduncularis (Kuntze) Wettst.

Perennial herb, stems many from the crown, tufted, branching, up to ±500 mm long, ±4 mm diam., suberect, glabrous, tetragonous. Leaves petiolate, mostly 30-39 x 14-21 mm, decreasing in size upwards, ovate, base subcordate, apex acute, margins incised-serrate, glabrous; petioles 8-15 mm long, glabrous, shallowly grooved above, with few translucent, gland-tipped hairs at petiole base. Flowers several in lax racemes; bracts leaf-like, up to 9 x 15 mm, not differentiated from leaves, pedicels resupinate, mostly 14-26 mm long. Calyx segments lanceolate, entire or irregularly incised, reflexed, two upper ones, ±5-7 x 3.5-4 mm, three lower ones slightly smaller, distinctly nerved, green, with patent gland-tipped hairs outside. Corolla tube ±3.5 mm long, split at base, upper lobe broadly ovate, ±10-12 x 6-8 mm, two lateral lobes broadly ovate, oblique, ±7-8 x 4-5 mm, two lower lobes subrotund, oblique, ±4-5 x 3-3.5 mm, all pink, sparsely glandular-pilose outside, inside of corolla tube usually somewhat deeper pink to maroon, corolla tube somewhat raised at the point where filaments arise, forming a yellowish-green subanular collar ±1.5 mm broad, corolla shallowly bisaccate below upper lobe, sacs yellow inside, subrotund, ±2 mm across. Stamens facing down; upper filaments ±5 mm long, lower filaments ±3.3 mm long, glabrous; anthers ±1.8-2 mm long, pollen yellow, ovoid, with three longitudinal grooves, ±49-56 µm long and ±34-36 µm diam.; wall finely reticulate. Ovary 2.7 x 2.5 mm, ovate, subcompressed, emarginate, ovules 84; style 4.5 mm long, stigma capitate, lying at base of the anthers. Capsule 8.5-9 x 7 mm, ovate, subcompressed, inflated at base, rugose, emarginate. Seeds ovoid, somewhat depressed at both ends, 1-1.2 x 0.6-0.7 mm, dark brown, with shallow longitudinal grooves.