Salvinia molesta
D. S. Mitchell (Salviniaceae), variously
called giant salvinia, water fern or African payal, is a vegetatively
reproducing, perennial, free-floating, aquatic weed,
native to southeastern Brazil (Waterhouse and Norris 1987).
It (hereafter called salvinia) is a very serious weed in most
regions outside its native range (Harley and Mitchell 1981)
including India. The purpose of this paper is to report
on two fungal pathogens that were found to be the cause
of a sudden decline in salvinia in Bangalore.(PDF has 4 pages.