138 P- Sydow: Pilze (ohne die Schizomyceten und Flechten). ["30 



166. Lister, 0. Mycetozoa observed iu Epping Forest in the 

 autumn of 1912. (Essex Naturalist XVII, 1913, p. 126-128.) 



Aufzählung der im Herbst 1912 gefundenen Myxomyceten. 



167. Lister, G. Mycetozoa fouud during the fungus foray 

 in the Forres district Sept. 12*^—20*^, with the description of 

 a newspecies. (Transact. British Mycol. Soc. IV, 1912, ersch. Mai 1913, 

 p. 38-44, 1 tab.) N. A. 



Auf den Exkursionen konnten 81 Myxomyceten gesammelt werden; 

 von diesen sind 14 neu für Schottland, nämlich: Physanim mutabile (Rost.) 

 List., Ph. conglomeratum (Fr.) Eost., Fiiligo miiscorum Alb. et Scliw., F. cinerea 

 (Schw.) Meng. var. ecorticata List., Diderma ochraceiim Hoffm., D. asteroides 

 List., Didymium dubium Rost., Leptodernia iridescens G. List., Comatricha 

 laxa Rost., C. rubens List., C. lurida List., Lachnobolus congestus (Somm.) 

 List., Dianema dcpressiim List. Neue Art ist Lamproderma insessum, ge- 

 funden auf einer Flechte auf Acer Pseudoplatanus. 



Auf der Tafel sind prächtig abgebildet Colloderma oculatiim (Lij^p.) 

 G. List und Lamproderma insessum. 



168. Masseo, George and Ivy Massee. Mildevvs, Rusts and Smuts. 

 A Synopsis of the families, Peronosporaceae, Erysiphaceae, Uredinaceae 

 and Ustilaginacea'. London (Dulau and Comp.) 1913, 8", I et 229 pp., 5 PI. 



Die Anordnung des Buches ist aus folgendem Inhaltsverzeichnis zu 



ersehen. 



Introduction. Nature of fungi dealt with. Loss caused by parasitic fungi 

 attacking cultivated plants. Progress of the study of mycology since 

 the publication of the last book in this country. Fungi as microscopic 

 objects. 



Peronosporaceae. Examples of primitive types of aquatic fungi. Sexuality 

 dies out as members become accustomed to living on dry land. De- 

 scription of sexual reproductive organs. Notes on the leading features 

 of genera. Key to the genera of the family. Systematic description 

 of the species. 



Erysiphaceae. General characteristics of the family. Naked eye appearance 

 of the species. Known as powdery mildews. Connexion betweeu the 

 two conditions of the species proved. The correct determination of 

 species. Key to the genera. Notes on the genera. Systematic descrip- 

 tion of the species. 



Perisporiaceae. Affinities of the family. Essentially a tropical family. The 

 one European destructive member. Fungi feeding on ,,honey-dew". 

 Description of the species. 



Uredinaceae. General character of the family. Parasitic nature of all the 

 members. Injury caused to cultivated plants belonging to this family 

 known from early times. Populär versus scientific conception as to 

 what constitutes a fungus. How fungi gain an entrance into the tissues 

 of the plant they infect. Description of the various stages constituting 

 the complete life cycle of a fungus belonging to the Uredinaceae. 

 Saccardo's arrangement of the species included in the genus Pnccinia. 

 Infection experiments. Biological species. Heteroecism. Parasitism. 

 Definition of the family. Notes on the genera. Systematic description 

 of the species. 



