... Pilea ( Urticaceae ) in Africa . Kew Bull . 44 : 557 - 600 ; 1989 . - The ... rivularis , P. tetra- phylla , P. angolensis ( with subsp . christiaensenii ) ... Pilea rivularis in the broad sense , and hence Neopilea becomes a ...
... Pilea anivo- ranensis ( loc . typ .: Mt. Andriantantely near Anivorano ... rivularis , or ca. 79 % of the entire genus ) . Narrowly endemic to Mt ... Pilea rivularis ( Comoros , Mt. Tsaratanana , Mt. Andrigintra and , ge- nerally ...