Impatiens concinna

Erect annual herbs, 15-25 cm high; stems stout, branched; branches ascending. Leaves opposite, 1.2-1.8 cm long, ovate-cordate, acute at apex, serrate, glandular; 3 lower serratures almost setaceous, nerves prominent beneath, subsessile; stipules setaceous or absent. Flowers ca 1 cm across, axillary, solitary, binate or in fascicles, rose-purple; pedicels shorter than the leaves. Lateral sepals ovate or ovate-lanceolate. Lip subequal to lateral sepals, cymbiform; spur very short, incurved. Standard orbicular, spurred. Wings 2-lobed; distal lobes dimidiate-ovate, clawed. Capsules ca 8 mm long, turgid in middle; seeds few, broader than long, subcompressed, black, shining.