ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 355 



Wintering of Fungus Spores.* — The capacity of summer conidia 

 to withstand cold has been tested by Bwert in a series of experiments 

 with the pycnidial spores of MycospJiserella sentina and the conidia of 

 Fusicladium pirinum and F. dendritkum. He exposed the spores and 

 conidia to repeated frost temperatures, and thus tested their germinating 

 capacity and their power to infect the host-plant. In both species the 

 fungi retained their vitality, thus enormously increasing the risks of 

 infection, as in cases where the ascus fruit had not been formed, the 

 summer fruit would carry on the life of the fungus. The writer con- 

 siders that his results have considerable bearing on Eriksson's myco- 

 plasma theory. 



Poisonous Fungi. t — Ed. Butignot records cases of poisoning in the 

 Bernese Jura due to eating Eutoloma lividum. Four small specimens of 

 the fungus were mixed with other species to form a dish for the evening 

 meal which was eaten by five people, all of whom suffered more or less 

 severely, though none of the cases were fatal. 



A. Sartory J gives his experiences of Cantharellus tubseformis and 

 C. aurantiacus, both of which have been classed among poisonous forms. 

 These fungi were given to guinea-pigs to eat and the sap was injected 

 without any appreciable harm. Sartory concludes that they are non- 

 poisonous. 



Contribution to the Micro-fungus Flora of Central Russia.§ — 

 A. Potebnia has made a study by culture and prolonged observation of 

 species of micro-fungi, his aim being chiefly to arrive at a knowledge 

 of parasitic forms and to connect up the lower conidial and pycnidial 

 forms with the higher ascus-bearing species. He gives a list of Ustila- 

 ginete and Uredinae observed by him in the district (Gouv. Kursk and 

 Charkow) as well as of other micro-fungi, and then proceeds to the 

 more detailed examination of certain groups and species. He established 

 MycospJiserella JFgopodii as the ultimate fruiting form of the sclerotium 

 on jEijo podium leaves, previously considered by him to be Phyllachora 

 Podagra/rise. He also proved the connection between other species of 

 MycospJiserella and pycnidial forms. Glwosporium Robergei was found 

 to be a stage of Sphserognomonia carpinea g. n., a parasite on the leaves 

 of Carpinus Betulus. Special notes are given on Sphseropsidales, espe- 

 cially of the genera Septoria and PJileospora. He records in all 300 

 species. 



Argentine Fungi. || — C. Spegazzini has issued Series IV. of his 

 Mycetes Argentinenses. It includes 612 species, many of them new to 

 science, and the following new genera : Micromastia, related to Anixia, 

 but with different spores ; Paracapnodium (Capnodiacere), with colourless 

 septate spores ; PJiseopfwmatospora, differs from Phomatospora in having 

 coloured spores ; PseudodiaportJte, differs from DiaportJie in the form of 

 paraphyses ; Oraniella, with immersed perithecia and colourless septate 



* Zeitschr. Pflanzenkr.,xx. (1910) pp. 129-41 (2 figs.), 

 t Bull. Soc. Mycol. France, xx. (1910) pp. 250-2. 



X Tom. cit., pp. 253-4. § Ann. Mycol., viii. (1910) pp. 42-93 (38 figs.). 



|| Anales Mus. Nac. Buenos Aires, xix. (1909) pp. 257-458 (40 figs.). See also 

 Ann. Mycol., viii. (1910) p. 105. 



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