Platostoma longicorne (F.Muell.) A.J.Paton
Paton, A.J. (1997) Kew Bulletin 52(2): 280.
Leafy stems clothed in hairs.
Flowers in inflorescences of 6-8 flowers. Inflorescence axis square in cross section. Calyx with 1 large upper lobe and 2 small lobes laterally on either side of large lobe (3 fused sepals), calyx hairy on outer side, lobes strongly recurved. Corolla campanulate with upper lip 3-lobed, lower lip 2-lobed, base of corolla tube with long conical spur; corolla tube and lobes hairy on the outside; stamens 2 upper inserted near the mouth and 2 lower near the base of the tube.
Calyx enlarges in fruit.