Schelpe, E. A. C. L. E. 1970. Taxon detail for Nephrolepis biserrata (Sw.) Schott. Flora Zambesiaca. Kew Gardens database. FZ volume:0 part:0 (1970) Davalliaceae by E. A. C. L. E. Schelpe.
Online details: http://apps.kew.org/efloras/namedetail.do?qry=namelist&flora=fz&taxon=7733&nameid=19563