Fungi, Myxomyceten, Pathologie. 299 



tuca sativa). Botrytis conidia were unable so infect healthy green 

 leaves, neither could they infect plants (grown in artificial cultures) 

 weakened by the Omission of one or other of the essential Clements. 

 On the other hand conidia were capable of infecting wounded lea- 

 ves just beginning to turn yellow. 



Though conidia have no effect on healthy leaves, if young my- 

 celium nourished saprophytically is placed on such leaves infection 

 at once spreads rapidly. A. D. Cotton (Kew). 



Butler, E. J., Report on Coconut Palm disease in Travan- 

 core. (Agricultural Research Institute Pusa, Bulletin W. 9. 23 pp. 

 Calcutta 1908.) 



The disease, which is causing great loss in Travancore, Hrst 

 Shows itself by the leaf-stalk becoming flaccid, and by the drooping 

 of the leaves. The withering extends backwards, and in extreme 

 cases the bud itself is affected and the crown falls off. Diseased 

 palms do not die at once, but may live for a number of 3'-ears, 

 they however become gradually weaker, the nuts produced are few 

 in number and frequently drop off while immature. 



The author finds no fungus present in the leaf or stem, but 

 States that the roots are attacked by a parasitic fungus, and consi- 

 ders this root-rot to be sufhcient to account for the disease. The 

 cause of the trouble therefore appears to be similar to that of the 

 Trinidad Coconut disease, but conclusive infection-experiments 

 have not yet been carried out. 



The report concludes with remarks as to the intensity of the 

 attack in different localities, and instructions for checking the 

 disease. A. D. Cotton (Kew). 



Cotton, A. D., Further Notes on British Clavariae. (Transac- 

 tions of the British mycological Society, p. 29—33. 1907.) 



Critical notes and revised descriptions are given of C. hiteo- 

 alha Rea, C. acuta Sow., and C. gigaspora Cotton. In addition Ciava- 

 ria fragilis Holmsk. and C. ruja H. Dan. are discussed, and dis- 

 missed as synon^^ms of C. vermiculata Scop. and C. inaequalis H. 

 Dan. respectively. The conclusions are based on several years' ob- 

 servations in the field. A. D. Cotton (Kew). 



Gaeguen, F., Recherches biologiques et anatomiques sur 

 le Xylaria Hypoxylon. (Bull. Soc. myc. France, t. XXIII. p. 186— 217. 

 PI. XXI et XXII. 1907.) 



L'auteur expose en detail les recherches resumees anterieure- 

 ment (Bot. Centn CVII. p. 71.) II signale l'influence de la lumiere 

 sur la production des conidies, le developpement de recoltes suc- 

 cessives ou continues sur la meme clavule. La Xylaire doit etre 

 comparee ä un coremium plutöt qu'ä un stroma. On obtient des 

 formes simples en culture. P. Vuillemin. 



Gueguen, F., Sur un Oospora nouveau {Oospora Unguaüs n. sp.) 

 associe au Cryptococcus linguae-pilosae dans la langue noire 

 pileuse. (C. R. Acad. Sc. Paris, t. CXLVI. p. 994—996. 11 mai 

 1908.) 



U Oospora Unguaüs Gueguen presente sur la langue, dans l'unique 



