ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 469 



record many new species but no new genera among the Sphaeropsideae. 

 Among the Hyphomycetes there are 7 described. Xenopus, one of the 

 Mucedineae, is near to Bhinotrichum, but the hyphae are entirely verru- 

 cosa Trichobotrys is one of the Dematiaceae, it somewhat resembles a 

 conidial form of Ascotrichum or Ghsetomium. Neomichelia has brightly 

 coloured hyphae and dark-coloured spores which are multi-septate and 

 borne on toothed. projections on the hyphse. The spores of Xenosporium 

 are borne on short sporophores ; they are large, erect, and subreniform, of 

 a dark shining colour and septate-muriform. Volutina resembles the 

 genus Volutella, but the spores are catenulate ; Listeromyces (named for 

 our English botanist Mr. Arthur Lister), is somewhat near Exosporium ; 

 the sporodochia are erect and cylindrical, the spores are ovoid, septate, 

 and dark coloured. Bonordoniella is also a member of the Tuberculariae, 

 with catenulate brown spores. 



Some new Fungi.* — P. Hennings publishes a list of fungi from 

 various localities from Norway, South America, Japan, New Guinea, &c. 

 All of them are microscopic and belong mostly to the Uredineae and the 

 Ascomycetes with a few Hyphomycetes. 



The same author f has published the list of Fungi japonici III. 

 They include species belonging to a large number of genera of the 

 Peronosporeae, Protomyceteae, Ustilaginea3,Uredinea3, Basidiomycetes, and 

 Ascomycetes with a small number of Sphaeropsideae aud Hyphomycetes. 

 The collection was made in Japan by some of the Professors in Tokyo. 

 The larger Agarics and Pezizas had been carefully prepared and pre- 

 served, and were accompanied in many cases by coloured drawings and 

 photographs. 



P. Dietel % gives a list of Japanese Uredineae. There are a con- 

 siderable number of new species, but no genera new to science. 



Tycho Vestergren § has issued a series of critical notes and diagnoses 

 to accompany his exsiccata of Micromycetes. The fungi dealt with are 

 all microscopic. Some of them are new species, others were found on 

 hitherto unrecorded host plants. He records under Ceeoma Alliorum 

 that the fungus was the product of a culture obtained from the spores of 

 Melampsora populina on Allium oleraceum and A. vineale. 



Plant Diseases. Black Rot of the Vine. — M. A. Prunet || publishes 

 a note on the development of the fungus Guignardia Bidwellii, which 

 causes this disease. A stroma is formed on the grapes, which persists 

 through the winter. In the early spring pycnidia are formed in the 

 stroma, the spores of which reinfect the young shoots of the vine. 

 Pycnidia are again formed on the vine-shoots, and the spores which they 

 produce originate a second infection ; this M. Prunet calls the secondary 

 invasion. The development of the parasite depends largely on the con- 

 dition of the atmosphere. A continuous rain and high temperature are 

 the most favourable conditions for the germination and growth of the 

 spores. A period of drought or too cold a season may stop altogether 

 the formation of the pycnidia. 



* Hedw. Beibl., xli. (1902) pp. 61-fi. 



t Enter's Bot. Jahrb., xxxii. (1902) pp. 35-46. 



X Tom. cit., pp. 47-52. § Botan. Notis., 1902, pp. 113-28. 



il Comptes Reudus, cxxxiv. (1902) pp. 1072-5. 



