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A B S T R A C T The genus lodophanus is a segregate of the coprophilous genus Ascophanus. It is characterized by the presence of callose-pectic marked spores, diffuse amyloidy of asci, carotenoid pigments in paraphyses and excipular cells, and an Oedocephalum imperfect state in some species. It consists of 10 species which may be distinguished by (1) the nature of spore ornamentation, (2) size and shape of spores and asci, and (3) the arrangement of excipular cells. Four new combinations are made and two new species, Iodophanus helotinus and I. granulipolaris, are introduced. Keys, descriptions, and illustrations are given for all taxa treated herein. THE GENUS ASCOPHANUS was first established by Boudier (1869) for dung-inhabiting species of discomycetes with sessile, fleshy, smooth or pruiniose or, rarely, pilose ascocarps. The hymenial surface was described as flat or convex, with clavate or oblong-ovate, 8-16-spored asci, and simple or branched paraphyses, slender or thickened at the apices and containing granules. The spores were described as ovate or oblong-ovate and generally hyaline or slightly colored. Kiimbrough (1966b) discussed the history of this genus and noted the suggestion of Korf (1954) that A scophanus, having species with characters of three tribes of the Pezizaceae, must be divided. From a study of this complex genus it was concluded by Kimbrough (1966b) that the lectotype of Ascophanus, Peziza subfuscus Crouan (selected by Seaver, 1928), fell within the natural limits of the genus Thelebolus Tode ex Fr. With great reluctance Kimbrough and Korf (1967) abandoned the name Ascophanus and proposed the genus lodophanus Korf for those species with amyloid asci, spores with callosepectic markings, an Oedocephalum imperfect state in some, and other features similar to those in the tribe Pezizeae. Only three species were |
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