THE GENUS BISCOGNIAUXIA

Forty-nine taxa are recognized in Biscogniauxia. Six species-B. africa na, B. arima, B. communapertura, B. plumbea, B. reticulospora, and B. zelandica-and three varieties-B. atropunctata var. intermedia, B. capn odes var, limoniispora, and B. philippinensis var. microspora-are newl y described. Eleven new combinations are made: B. albosticta; B. atrop unctata var. maritima; B. capnodes; B. capnodes var. rumpens; B. capno des var. theissenii; B. kalchbrenneri; B. mediterranea var. macrospora ; B. mediterranea var. microspora; B. plana; B. sinuosa; and B. uniapi culata var. indica. Biscogniauxia schweinitzii is introduced as a subs titute for B. macula. A dichotomous key is provided along with a list of diagnostic characteristics of certain taxa. A list of known names o f Biscogniauxia and its synonyms is included.