Dematiocladium celtidis gen. sp. nov. (Nectriaceae, Hypocreales), a new genus from Celtis leaf litter in Argentina.

A Cylindrocladium-like hyphomycete collected on leaf litter of Celtis tala in Argentina had rDNA sequence data (ITS and LSU) that showed it resides in the Hypocreales, and is a member of the Nectriaceae, closely related to, but distinct from Cylindrocladium. A new genus, Dematiocladium and species, D. celtidis gen. sp. nov. is, therefore, introduced to accommodate this fungus. Based on morphology, it can be distinguished from other conidial hypocrealean genera with hyaline, penicillate conidiophores and cylindrical conidia by lacking stipe extensions and vesicles, and by the presence of brown to dark brown, thick-walled setae.

[1]  P. Crous,et al.  Phylogenetic reassessment of the coelomycete genus Harknessia and its teleomorph Wuestneia (Diaporthales), and the introduction of Apoharknessia gen. nov. , 2004 .

[2]  P. Crous,et al.  Calonectria species and their Cylindrocladium anamorphs: species with sphaeropedunculate vesicles , 2004 .

[3]  P. Crous,et al.  Novel species of Cylindrocarpon (Neonectria) and Campylocarpon gen. nov. associated with black foot disease of grapevines (Vitis spp.) , 2004 .

[4]  P. Crous.  Taxonomy and Pathology of Cylindrocladium Calonectria and Allied Genera , 2002 .

[5]  C. Schoch,et al.  Xenocylindrocladium guianense andX. subverticillatum, two new species of hyphomycetes from plant debris in the tropics , 2001 .

[6]  M. Wingfield,et al.  Phylogeny of Calonectria based on comparisons of β-tubulin DNA sequences , 2001 .

[7]  M. Wingfield,et al.  Phylogeny of Calonectria and selected hypocrealean genera with cylindrical macroconidia , 2000 .

[8]  A. Rossman,et al.  Genera of Bionectriaceae, Hypocreaceae and Nectriaceae (Hypocreales, Ascomycetes) , 1999 .

[9]  P. Crous,et al.  Curvicladium gen. nov., a new hyphomycete genus from French Guiana , 1998 .

[10]  P. Crous,et al.  Megaconidia as an additional taxonomic character in Cylindrocladium, with a note on Cylindrocladiopsis , 1998 .

[11]  P. Crous,et al.  Nectria serpens sp. nov. and its hyphomycetous anamorph Xenocylindrocladium gen. nov. , 1997 .

[12]  M. Wingfield,et al.  A monograph of Cylindrocladium, including anamorphs of Calonectria , 1994 .

[13]  M. Wingfield,et al.  A re-evaluation of Cylindrocladiella, and a comparison with morphologically similar genera , 1993 .

[14]  M. Wingfield,et al.  EFFECTS OF CULTURAL CONDITIONS ON VESICLE AND CONIDIUM MORPHOLOGY IN SPECIES OF CYLINDROCLADIUM AND CYLINDROCLADIELLA , 1992 .

[15]  A. Rossman.  Calonectria and its type species, Calonectria daldiniana, a later synonym of Calonectria pyrochroa [Fungi]. , 1979 .

[16]  R. Rayner,et al.  A Mycological Colour Chartby R. W. Rayner , 1972 .