New species of Calonectria and Cylindrocladium isolated from soil in the tropics
Date
1997
Authors
Crous P.W.
Mchau G.R.A.
Van Zyl W.H.
Wingfield M.J.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Several Calonectria (Ca.) and Cylindrocladium (Cy.) species were recovered from alfalfa-baited soil samples gathered in Colombia and Venezuela. Perithecia of Calonectria naviculata sp. nov. formed in culture when Venezuelan strains of Gy. naviculatum were crossed with ex-type Brazilian strains. Calonectria gracilipes sp. nov. (anam. Cy. gracilioideum sp. nov.), a homothallic species, was isolated from Colombian soils. Cylindrocladium graciloideum, Cy. gracile, Cy. pteridis and Cy. pseudogracile form a complex of morphologically similar species characterized by clayate vesicles and primarily 1-septate conidia. Each species could, however, be distinguished using RFLP banding patterns. A key to Calonectria spp. having Cylindrocladium anamorphs with 1-septate conidia is also presented.
Description
Keywords
Citation
Mycologia
89
4
89
4