Morphological features of C. spelaeum A line drawing of a fruiting branch showing stem with alternate, sessile, spathulate leaves B SEM micrograph of nutlet showing more marginal and acentric glochidia C close-up SEM micrograph showing glochidia with multiangular hooks. Voucher specimen: A. Nicholas and B. Isaacs 1965 (PRE). Drawing scale 8.0 mm. SEM images scale bars: 1 mm (B); 200 µm (C).

 
 
  Part of: Madika LK, Moteetee AN (2022) Taxonomic revision of the southern African species of the genus Cynoglossum L. (Boraginaceae). PhytoKeys 193: 9-42. https://doi.org/10.3897/phytokeys.193.72270