Studies in the Sphaerocarpales (Hepaticae) from southern Africa. 3. The genus <i>Riella</i> and its local species

Abstract

Hepaticae, Riella Mont., R. affinis M.Howe & Underw.. R. alatospora Wigglesworth. R. capensis Cavers. Riellaceae Engl., R. echinospora Wigglesworth, R. purpureospora Wigglesworth, Riellineae R.M.Schust., southern Africa. Sphaerocarpales Cavers, subgenus Riella. subgenus Trabutiella Porsild