Craterostigma (Wettstein, 1891)

Grieve, Katharine W. & Bester, Stoffel P., 2023, Re-instatement of Craterostigma nanum (Linderniaceae) from the Pondoland Centre of Floristic Endemism and key to the South African species, Phytotaxa 592 (2), pp. 135-143 : 140

Key to the species of Craterostigma in South Africa

1a Herb to 300 mm tall; flowers pink or mauve; anthers hairy................................................................................................ C. wilmsii

1b Dwarf herbs up to 100 mm tall; flowers predominantly white and/or blue; anthers glabrous........................................................... 2

2a Leaves prominently veined beneath; corolla predominantly blueish violet; anterior filaments without appendages; roots orange red............................................................................................................................................................................. C. plantagineum

2b Leaf veins indistinct; corolla predominantly white; anterior filaments with appendages; roots yellow............................. C. nanum