Perennial, geophytic herb, 50-380 mm high. Stems procumbent to erect, well branched. Leaves narrowly ovate, 4-48 x 1-3 mm, base sometimes sagittate. Flowers: inflorescences pedunculate, 3-5-flowered; corolla campanulate, lobes flat, erect, margins revolute, tips recurved, outside green with brownish streak in middle, inside paler green to cream-coloured; Nov.-Feb. Fruit a follicle with echinate, 4 mm long processes.