176 MORPHOLOGY AND TAXONOMY [Bot. Absts., Vol. IV, 



being critical notes on, reductions of, and redescriptions of Ceylon fungi, numbers 215 to '272, 

 originally described by Berkeley and Broome from the Ceylon collections made by Thwaites. — 

 E. D. Merrill. 



1150. Petch, T. Gasteromycetae zeylanicae. Ann. Roy. Bot. Gard. Peradeniya 7: 57-7S. 

 1919. — A list of the Ceylon G 'aster omycetes in which the following new combinations or new 

 species occur: Jansia proximo, (B. & Br.) Petch, Nidularia reticulata n. sp., Mitremyces 

 insignis. (Berk.) Petch, M. Berkeleyi (Mass.) Petch, Lanopila bicolor (Lev.) Petch, Calvatia 

 Gardneri (Berk.) Petch, Bovistella conspurcata (B. & Br.) Petch, Scleroderma endoxanthum 

 n. sp. S. pseudotipitatum n. sp., and Lycogalopsis zeylanica n. sp. Pharus is described as 

 a new genus, its type being P. Gardneri Petch, based on Lysurus Gardneri Berk.; this name 

 is invalidated by Pharus P. Br., a valid genus of the Gramineae. — E. D. Merrill. 



1151. Petch, T. Further notes on Colus Gardneri (Berk.) Fischer. Trans. British Mycol. 

 Soc. 6: 121-132. PI. 5. 1919. — A detailed account of the controversy which has resulted 

 from the study of this species by Fischer, Lloyd and others. The characters of the genera 

 Colus, Lysurus, Anthurus, etc. are discussed in this connection. Fresh material of Colus 

 Gardneri collected in Ceylon is compared with material of Lysurus australiensis received in 

 formalin from Australia, and the essential points of difference are enumerated. Finally a 

 new genus, Pharus, is based on the species from Ceylon. In this genus the arms of the recep- 

 taculum are described as being normally united at the apex, and the glebiferous layer, borne 

 solely on the arms, consists of numerous plicate processes and plates standing perpendicular 

 to the arm and presenting a granular outer surface. The Australian species is retained in 

 Lysurus. The two forms are figured. — H. M. Fitzpatrick. 



1152. Pethybridge, G. H. Notes on some saprophytic species of fungi, associated with 

 diseased potato plants and tubers. Trans. British Mycol. Soc. 6: 104-120. PI. S, 4. 1919.— 

 A species of Nectria, found in close association with Verticillium cinnabarinum Reinke and 

 Berth., is shown by pure cultures to be the perfect stage of this species, and is described as 

 Nectria inventa n. sp. Hallier attributed the disease of potatoes known as "Curl" to the pres- 

 ence of a fungus which he named Rhizoctonia tabifica n. sp. He placed the fungus in Rhizoctonia 

 because he found in connection with it black, pseudo-parenchymatous bodies which he regarded 

 as sclerotia. These bodies are here shown to be the fruit bodies of a species of Colletotrichum 

 and a new species, C. tabificum (Hallier pro parte) Pethybridge is described from them. Al- 

 though it is recognized that the species may be identical with C. solanicolumO'G&r&, certain 

 differences are pointed out, especially the development by C. tabificum of an amethystine 

 fluorescence in the culture medium. Taubenhaus has described a new species of Colle- 

 totrichum which he regards as identical with C. solanicolum and applies to it the name C. 

 airamentarium since he regards it as identical with Phellomyces sclerotiophorus Frank and this 

 in turn to Vermicularia atramentaria B. & Br. Pethybridge here points out the fact that 

 Spondylocladium alrovirens Harz, the fructifying stage of P. sclerotiophoms Frank, as it occurs 

 in Europe cannot be regarded as a species of Colletotrichum. The possibility of the identity 

 of C. tabificum and C. varians Ducomet is also mentioned. A study of Hypomyces Solani 

 Reinke and Berth, in pure culture shows that it produces conidia and chlamydospores re- 

 sembling in some respects those produced by species of Fusarium. There are, however, pro- 

 nounced differences between typical species of Fusarium and the conidial stage of this Hypo- 

 myces, and it is concluded that //. Solani is not the perithecial stage of Fusarium Solani or 

 of any other species of Fusarium. It is shown, moreover, that H. Solani is not parasitic 

 on the potato. Two new species of Verticillium isolated from the surface of potato tubers 

 are described and compared with V. albo-atrum R. & B. Both were studied in pure cul- 

 ture derived from single conidia and inoculations on the potato were in all cases unsuccessful. 

 The names applied are V. nubilum n. sp., and V. nigrescens n. sp. Langloisula macrospora 

 A. L. Smith was isolated from potato leaves and tubers. Reasons are given for the belief 

 that it is identical with Monopodium Delacroix and with Acromoniella atra Corda. All of 

 the fungi discussed are figured. — //. .1/. Fitzpatrick. 



