ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 757 



( parasitic aud saprophytic. Agarics infect poplar wood at the saw-mills. 

 Purple willow is attacked in Lower Austria by Genangium rosulatum ; an 

 Ascomycete, Gollybia velvtipes, is suspected of causing a disease of elms in 

 the water meadows of Moravia. On barked oak appear Stereum hir- 

 sutum, Polyporus hirsutus, Lenzites betulina, and Bulgaria polymorpha. 

 A species of Glavaria follows on the attack of a beetle. 



H. Nilsson-Ehle * has made a study of the Scolecotrichum-disea&e of 

 oats. It appears more frequently on moorlands, and more especially after 

 a dressing of lime. Susceptibility to the disease lies in the oats them- 

 selves. Descriptions of those that are susceptible and those that are 

 immune are given. 



C. Eeiche t gives an account of the diseases that attack cultivated 

 plants in Chili. "The chief fungoid parasites are smuts and rusts on 

 cereals, HelminthospOrium graminmm on barley, etc. Peronosporeae are 

 rare owing to the dry summers. On orchard trees, Exoascus deformans, 

 Fusicladium, Nectria and Gydoconiam are the most frequent ; on the 

 vine. Oidium T ticker i. The insect pests are also enumerated. 



Cr. Gassner % combats the view that the witches' brooms of cherry in 

 Uruguay are due to temperature. He points out that the disease is due 

 to Exoascus deformans, and advises as to methods of treatment. 



Mycorhiza as a Parasite. § — G. A. Nad son investigated an ex- 

 tensive loss of oak-seedlings, 1-2 years old, and found that the roots 

 had been killed by a mycorhiza fungus. The hyphal cells of the 

 parasite were here and there much enlarged, and not oidy was it of no 

 use to the oak, but had become a dangerous disease. The author states 

 all such fungi are parasites, but usually the parasitism is confined to the 

 *outer cell-layers of the root, and the fungus takes over the function of 

 providing water and food materials, thus giving rise to the symbiotic 

 conditions. Occasionally, as in the case investigated, the fungus 

 becomes a pure parasite. 



Atkinson, Geo. F. — Preliminary Notes on some New Species of Agaricaceae 

 and Clavaria. Ann. Mycol, vii. (1909) pp. 3G5-76. 



Bainibr, G., & A. Sartory— Etude d'un Aspergillus pathogene (Aspergillus 

 fumigatoides sp.n.) (Study of a pathogenic Aspergillus.) 



[Description of the new plant, and its effect on inoculation experiments.] 

 Bull. Soc. Mycol. France, xxv. (1909) pp. 111-18 (1 pi.). 



Bataille, Frederic — Miscellanees mycologiques. 



[Diagnoses of two species of Cortinarius ; notes on colour reactions and a 

 species of Bussula.) Tom- cit, pp. 69-82. 



Bourdot, H., & A. Galzin — Hymenomycetes de France. 



[Patouillard's classification has been followed, and a critical account of the 

 plants is given.] Tom. cit., pp. 15-36. 



* Tiddskr. Landt. Lund, 1908, 15 pp. See also Bot. Centralbl., cxi. (1909) 

 p. 165. 



t Contr. Centra. Ind. Agric. Congr., iv. (1908) pp. 163-6. See also Bot. Cen- 

 tralbl., cxi. (1909) p. 166. 



% Rev. Asoc. Rural, Uruguay, Montevideo, 1908, pp. 546-51. See also Bot. 

 Centralbl., cxi. (1909) pp. 188-9. 



§ Jahrb. Pflanzenkr. St. Petersbourg, ii. (1908) pp. 26-40 ; Res., pp. xi-xii (4 pis.). 

 See also Bot. Centralbl., cxi. (1909) pp. 165. 



Dec loth. 1909 3 E 



