ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 651 



Fungi hypogeei.* — F. Bucholtz gives a morphological and systematic 

 account of these fungi, 45 species of which have been recorded in Russia, 

 one genus and five species being new to science. The writer takes up 

 both the Ascomycetous and Basidiomycetous groups and gives the de- 

 velopment of certain forms in each. A list of the Russian species is 

 given and a bibliography. 



Persistence of Fungal Parasites in altered Conditions of the 

 Host Plants.t — P. Hennings has made notes on a series of plants 

 affected by Ustilaginese and Uredinea3. They were transplanted and 

 kept under observation and it was found in several instances that the 

 disease disappeared in a few years. The writer makes further observa- 

 tions on the conditions of growth of the host as affecting the recurrence 

 of the parasite. 



Chemical Action of Growing Fungi. J — 0. Emmerling and 

 E. Abderhalden criticise Low's results as to the production of proto- 

 catechuic acid by the growth of fungi on quinic acid. They conclude 

 that some Schizomycetes must also have taken part in the various 

 reactions. They isolated one of these which they named Micrococcus 

 chinicus. They found this organism also in potassium citrate that had 

 been inoculated with foul meat solution. The authors are still engaged 

 on the research. 



0. Emmerling § also gives the results obtained by growing Aspergillus 

 niger on various substances. Oxalic acid was formed most frequently as 

 ammonium oxalate. The writer gives a table of percentages of the 

 oxalate produced in the different nutritive media, and also a list of 

 substances in which no oxalic acid was formed by the growth of the 

 fungus. 



Culture of Sterigmatocystis nigra. || — M. Molliard and H. Coupin 

 have grown this fungus in Raulin's solution but without potassium. 

 They find that in these conditions the spores are produced with difficulty, 

 the conidial heads proliferate ; forms corresponding to Aspergillus and 

 Penicillium are also produced, the conidia are smaller and they 

 germinate on the heads and form chlamydospores. 



Notes on Various Fungi. f — G. Arcangeli calls attention to the 

 alteration caused by the presence of JEcidium Rumicis on two species of 

 Rumex. The parts of the leaf affected were coloured red with a 

 yellowish margin. An examination of the tissues showed that the red 

 colouring matter was confined to special cells. He notes other fungi that 

 produce the same effect such as Exoascus deformans, Ovular ia obliqiia, 

 &c, and discusses the probable reason for the presence of the pigment. 

 Some other fungi are commented on, and the dimensions are given of a 

 very large specimen of Boletus edulis. It reached a height of 33 cm. 



Notes on Nomenclature.** — H. and P. Sydow record the curious 

 instance of a new genus of fungi Didgmostilbe being published by two 



* Ann. MvcoUi. (1903) pp. 152-74 (2 pis.). 

 t Zeitsch.'Pflanzenkr., xiii. (1903) pp. 41-5. 



X Centralbl. Bakt., x. (1903) pp. 337-9. § Tom. oit., pp. 273-5. 



|| Comptes Rendus, cxxxvi. (1903) pp. 1695-6. 

 1 Bull. Soc. Ital., 1903, pp. 57-61. ** Ann. Mycol., i. (1903) pp. 176-8. 



