97 AUSTRALIAN FUNGI. II. NEW RECORDS AND REVISIONS. By C. G. Hansford, Sc.D., Waite Agricultural Research Institute, University of Adelaide, (Two Text-flgures.) [Read 28th July, 1954.] Synopsis. One hundred fungi are dealt with in this paper ; some represent new species, others new-records for Australia or for parts thereof, and notes are included on a number of species previously recorded here. This paper deals with a number of Australian Fungi sent to me from various Herbaria here, and by a number of collectors in different parts of the continent. The origin of each collection is detailed below, and I have to thank the authorities and collectors concerned for their most valuable assistance in endeavours to revise the Fungus Flora of Australia. I can only hope that the present paper will stimulate other collectors to more activity in this field. The numbering of the species is continued from the first paper of this series, published in these Proceedings, 78:51-82, September 1953. PHYCOMYCETES. (62) Cystopus centaurii Hansf., n. sp. Sori conidiiferi foliicoli et caulicoli, albi, ovoidei vel rotundati, subinde confluentes et elongati, usque ad 1-5 mm. longi, primo epidermide inflate tecti, demum illo disrupto subnudescenti, pulverulenti. Conidiophora erecta, hyalina, 20-40 x 12-18/x, stipata, simplicia. Conidia acrogena, catenulata, globosa vel subcuboidea, hyalina, levia, continua, 18-26^ diam., interdum membrana intus annulato-incrassata. Oogonia in mesophyllo et in cortice caulis dispersa, globosa vel ovoidea, usque ad 70 x 50^1; oosporae singulae, ex fulvo brunnescentes postremo subopacae, globosae, 50-60,u diam., plerumque grosse uni-guttulatae ; episporio 5-6^ cr., dense reticulato-sulcato. Hab. in foliis Centaurii spicati, The Chalet, Kosciusko, New South Wales, A. Costin 59. The conidial sori occur on leaves, less commonly on the stems, and are white and pulverulent when mature, surrounded by the broken epidermis, up to 1-5 mm. long on the stems when confluent, covered at first by the inflated epidermis. The conidiophores form a close palisade at the base of the sorus, and are erect, simple, hyaline, continuous, 20-40 X 12-18/^, forming simple chains of spores at the apex, without interstitial cells. The young spores are globose, but soon become almost cuboid from mutual pressure, and are hyaline, smooth, continuous, 18-26^ diam., sometimes showing an indistinct internal transverse annular thickening of the wall. The oogonia occur in the leaf mesophyll and also in the cortical tissue of the stem, being loosely scattered, globose to ovoid, thin-walled, up to 70 x 50/u.; each contains a single oospore, which is at first pale yellowish, but soon darkens first to brown and finally to almost opaque black-brown. Mature oospores are globose, 50-60/u diam., usually containing a single large oil globule; the epispore is 5-6^ thick and closely reticulate with furrows descending Z-i/x into the wall. This is close to C. swertiae (Berl. & Rom.) Sacc, as given in Syll. Fung. 21:858, 1912, but the Australian species differs in its larger conidia and oospores. ASCOMYCETES. (63) Elsinoe tristaniae Hansf., n. sp. Maculae epiphyllae, usque ad 70 mm. diam., rufobrunneae, concentrice indistincte zonatae, zona lutea 5 mm. cr. circumdatae. Mycelium in mesophyllo ex hyphis hyalinis.