Rw. Barreto et Hc. Evans, MYCOBIOTA OF THE WEED CYPERUS-ROTUNDUS IN THE STATE OF RIO-DE-JANEIRO, WITH AN ELUCIDATION OF ITS ASSOCIATED PUCCINIA COMPLEX, Mycological research, 99, 1995, pp. 407-419
A survey of the fungi associated with the pantropical weed Cyperus rot
undus was conducted during 1988 and 1989 in part of its exotic range i
n southern Brazil. The sampling activity was concentrated in the state
of Rio de Janeiro, covering 70 sites located in different climatic or
ecological zones. Five species were identified as members of the path
ogenic mycobiota: Cercospora caricis, Cintractia limitata, Dactylaria
higginsii, Duosporium cyperi and Puccinia canaliculata. All are report
ed here for the first time in Brazil and Duosporium cyperi is a new re
cord from Cyperus rotundus. The complex of six rust species belonging
to Puccinia which have been described from C. rotundus was critically
re-examined and three of these, Puccinia conclusa, P. cypericola and P
. philippinensis are considered to be synonyms of P. canaliculata. The
implications for biological control of C. rotundus are discussed.