Three new species of smut fungi (Ustilaginales) on grasses from
Western Australia are described and illustrated: Sporisorium ordense
sp. nov. on Brachiaria pubigera, Sporisorium paraneurachnes
sp. nov. on Paraneurachne muelleri and Ustilago xerochloae
sp. nov. on
Xerochloa imberbis and X. laniflora. Smut fungi new to
Australia are: Sporisorium heteropogonicola comb. nov. (based
on
Sorosporium
heteropogonicola) on Heteropogon contortus, Sporisorium
iseilamatis on Iseilema vaginiflorum (matrix nova),
Tilletia opaca on Spinifex
longifolius (matrix nova), Ustilago spermophora on
Sporobolus australasicus (matrix nova). Sporisorium mitchellii,
known hitherto from
South Australia on Iseilema mitchellii, was collected on
Iseilema dolicotrichum (matrix nova).