ABSTRACT: The smut fungi of Sorghum are revised. Of the 21 names 10 are recognised as valid species. Of these, four are present in Australasia including two endemic species. Two additional, new species from Australia are proposed: Sporisorium australasiaticum and S. ryleyi. Sporisorium wynaadense (comb. nov.) is new to Australasia. Two further new combinations are proposed: Sporisorium transvaalense (from South Africa) and Macalpinomyces ewartii. Sorosporium simii is a synonym of Sporisorium reliianum. A key to the smut fungi of Sorghum is given.

KEYWORDS: new species, new combinations, synonyms, Macalpinomyces ewartii, Sporisorium australasiaticum, S. ryleyi, S. wynaadesne

NOMENCLATURAL NOVELTIES:
Macalpinomyces ewartii (McAlpine) Vánky & R.G. Shivas, p. 346
Sporisorium australasiaticum Vánky & R.G. Shivas, p. 340
Sporisorium ryleyi Vánky & R.G. Shivas, p. 342
Sporisorium transvaalense (Zundel) Vánky & R.G. Shivas, p. 348
Sporisorium wynaadense (Sundaram) Vánky & R.G. Shivas, p. 346