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Hyphomycetes from Nigerian rain forests

     Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, 43201 Reus and Institut d'Estudis Avançats, Universitat Rovira i Virgili, Tarragona, Spain

Ángel Mercado-Sierra

     Instituto de Ecología y Sistemática, Ministerio de Ciencia, Tecnología y Medio Ambiente (CITMA). A. P. 8029, Ciudad de La Habana 10800, Cuba

Rafael F. Castañeda-Ruíz

     Instituto de Investigaciones Fundamentales en Agricultura Tropical "Alejandro de Humboldt" (INIFAT) calle 1, esq. 2, Santiago de Las Vegas, Ciudad de La Habana, Cuba, C. P. 17200

Phaeobotrys gen. nov., based on Phaeodactylium acutisporum, characterized by branched and pigmented conidiophores, and the production of hyaline, appendiculate conidia from denticles on polyblastic conidiogenous cells which usually extend sympodially to form more conidiogenous loci, and Zanclospora stellata sp. nov., recognized by its stellate sterile branches in the distal part of the conidiophore and bacilliform conidia, are described and illustrated from decaying leaf litter from Nigeria. Keys to Phaeobotrys and related genera, and to species of Zanclospora are proposed. Furthermore, a list of hyphomycetes newly reported for Nigeria is provided.

Key words: litter, Phaeobotrys, Phaeodactylium, systematics, tropical fungi, Zanclospora