Roberts, Rodney G. Alternaria undulata, a new species from Citrus sinensis. Mycotaxon 104: 29–34. 2008.

ABSTRACT:   A new species, A. undulata, is described from fruit of Citrus sinensis (navel orange) imported into USA from Australia. A. undulata was associated with visible lesions that appeared to originate from the peduncular scars of several fruit purchased from a retail display in a local grocery store. The wavy appearance of primary and secondary conidiophores produced in potato-carrot agar cultures is the diagnostic character by which this species can be recognized. Cluster analyses of DNA fingerprint data sets support the inclusion of A. undulata in the A. infectoria species-group and its segregation from other members of this group.

KEYWORDS:  decay, sporulation pattern