Selaginella gioiae Valdespino. A Lateral leaf from stem branch, upper surface B proximal half of lateral leaf, upper surface (same leaf shown in A) C distal half of lateral leaf, upper surface (same leaf shown in A) D lateral leaf, lower surface E proximal half of lateral leaf, lower surface (same leaf shown in D) F distal half of lateral leaf, lower surface (same leaf shown in D); note, elongate and papillate idioblasts (a) and stomata along midrib (b) G median leaf from stem branch, upper surface H proximal half of lateral leaf, upper surface (same leaf shown in G) I distal half of median leaf, upper surface (same leaf shown in G); note, elongate and papillate idioblasts (a) and stomata along midrib (b) J median leaf from stem branch, lower surface K proximal half of median leaf, lower surface (same leaf shown in J) L distal half of median leaf, lower surface (same leaf shown in J). A–L taken from the holotype.