The stipitate species of Hypocrea (Hypocreales, Hypocreaceae) including Podostroma

Authors: Ulvinen, Tauno & Chamberlain, Holly L. & Rossman, Amy Y. & Stewart, Elwin L. & Samuels, Gary J.
Journal: Karstenia, Volume 44 (2004), Issue 1-2, pages 1-24.
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Key words: Ascomycetes, Hypocreaceae, Hypocreales, Podocrea, systematics, Trichoderma

Abstract: Stipitate species of Hypocrea have traditionally been segregated as the genusPodostroma. The type species of Podostroma is P. leucopus for which P. alutaceum has been considered an earlier synonym. Study of the type and existing specimens suggests that these two taxa can be distinguished based on morphology and biology. Podostroma leucopus is herein recognized as Hypocrea leucopus (P. Karst.) H. Chamb., comb. nov., thus Podostroma is a synonym of Hypocrea. The genusPodocrea, long considered a synonym of Podostroma, is based on Sphaeria alutacea, a species that is recognized as H. alutacea. A neotype is designated for Sphaeria alutacea. Both H. alutacea and H. leucopus are redescribed and illustrated. The new species H. nybergiana T. Ulvinen & H. Chamb., spec. nov. is described and illustrated. In addition to H. leucopus, seven species of Podostroma are transferred toHypocrea, viz. H. Africana (Boedijn) H. Chamb., comb. nov., H. cordyceps (Penz. & Sacc.) H. Chamb., comb. nov., H. daisenensis (Yoshim. Doi & Uchiy.) H. Chamb., comb. nov., H. eperuae (Rogerson & Samuels) H. Chamb., comb. nov., H. gigantea(Imai) H. Chamb., comb. nov., H. sumatrana (Boedijn) H. Chamb., comb. nov., and H. truncata (Imai) H. Chamb., comb. nov. A key to the 17 species of stipitateHypocrea including Podostroma and Podocrea is presented.