Studies in African Cyperaceae 31. Cyperus microcristatus, a new species from Mt Kupe, Cameroon

Cyperus microcristatus, a new species from western Cameroon, is described and illustrated. Its taxonomic affinities are discussed. Cyperus microcristatus is most similar to C. densicaespitosus (syn. Kyllinga pumila) in general appearance, but differs in its more perennial habit, its smaller spikelets and glumes, which are more prominently winged. Notes on habitat, ecology, distribution and conservation are provided. It is assessed as Critically Endangered, following IUCN (2001).