494 Eumycetes. 



of various Single salts upon the germinating spores, and it was 

 found that the spores showed four distinct tj^pes of response, it 

 usually being possible to bring about each of the latter by proper 

 concentration of any one of the Compounds used. A list of the sub- 

 stances employed, arranged in order of their toxicity, is as foUows: 

 Cu(N03)2,CuS04, Pb(N03)2, A^NOg)^, HNO3, Zn(N03)o,Ni(N03)o,Mg(N03)2, 

 Ca(N03)o, KNO3, and sucrose. A bibliography is appended. 



Sam. F. Trelease. 



Hörne, A. S., The Occurrence ofFungi on Alettrodes vapo- 

 raviiim in Britain. (Ann. Appl. Biol. II. p. 109—111. May 1915.) 



Cephalospoviiini Lefvoyi, n. sp. is recorded growing on the 

 nymph-form of Aleurodes vaporarium, and observations are cited 

 tending to throw doubt on its parasitism. The desirability of rein- 

 vestigating other species of fungi said to be parasitic on scale insects, 

 is indicated. The technical description of the fungus was published 

 in the Card. Chron., Mar 13, 1915, p. 139. E. M. Wakefield. 



Muprill, W. A., American Boletes. (New York. Published b}'- 

 the author. 40 pp, Octavo. 1914.) 



A concise manual covering continental and insular North 

 America as far as the Isthmus, No names are noted as new, 

 the combinations conforming nomenclature to the author's view 

 having been made, with indication of synonymy, in his revision ot 

 the group in "North American Flora". Trelease. 



Murrill, W. A., Northern Polypores. (New York, Published 

 by the author. 64 pp. Octavo. 1914.) 



A concise manual of the pileate species of eastern Canada 

 and the northern United States south ward to the southern 

 boundaries of Virginia, Kentucky, Missouri and Kansas» 

 and westward to the western boundaries of Kansas, Nebraska 

 and the Dakotas. The following new combinations, chieflj'" 

 without synonymy, or new species, are met with; Coriolus mollius- 

 culiis, Grifola Peckiana ; Fulvifornes, n. gen., with F. Robiniae 

 {Pyropolyporus Robiniae Murrill), F. Everhavtii, F. Ribis, F. jiinipe- 

 rimis ; and ElfvingieUa, n. gen., with E.fornentaria{Elfvins;iafomen- 

 tarin Murrill). Trelease. 



Murrill, W. A., Southern Polypores. (New York, Published 

 by the author. 66 pp. Octavo. 1915.) 



A concise manual of the pileate species of the Carolinas, 

 Tennessee, Arkansas, Oklahoma, Texas, Louisiana, 

 Mississippi, Alabama, Georgia and northern Florida. The 

 following new names occur: Inonotus ludoviciaims {Xa}itJwchrons 

 ludovicianus Pat.), and Elfvi)igiella fasciata the validity of the specific 

 name questioned. Trelease. 



Pole Evans, I. B., The South African Rust Fungi. I. The 

 Species of Puccinia on Compositae. (Roy. Soc. S. Africa Meet. 

 18th Aug. 1915.) 

 Descriptions and accompanying notes are given of the species 



