Vittaria (Taeniopsis) isoetifolia Bory

First recorded — Brause & Hieronymus (1910: 31).

Note — Mildbraed collected this taxon in “Rugege-Wald” with his number 921. Unfortunately, the specimen is sterile, so it cannot be determined exactly. As the leaves are very small, it does not belong to Haplopteris guineesis, but whether it is identical with H. reekmansii (see above) cannot be stated with certainty. V. isoetifolia is known from eastern and southern Africa and therefore could occur also in Rwanda.