Selaginella pubimarginata Valdespino. A Section of upper surface of stem showing median and lateral leaves B median leaf, upper surface C distal half of median leaf, upper surface (same leaf shown in B) D proximal half of median leaf, upper surface (same leaf shown in B) E section of median leaf outer half, upper surface; note prominent elongate, papillate idioblast (a) and submarginal stomata (b) F detail of midsection of inner half of median leaf, upper surface G detail of median leaf, upper surface; note papillate cells H lateral leaf, upper surface I section of proximal, acroscopic half of lateral leaf, upper surface (same leaf shown in H) J section of distal and basiscopic half of lateral leaf, upper surface (same leaf shown in H) K detail of section of basiscopic margin of lateral leaf, upper surface (same leaf shown in H); note submarginal stomata (a) and teeth-like hairs (b) L detail of lateral leaf, upper surface; note papillate cells. A–L taken from the holotype.