38 Algae. — Eumycetes. 



c) Die Vegetationsfärbung der Triebe, von welchen unterschie- 

 den werden können: 



1) Die Vegetationsfärbung in Teichen, die nicht unter dem 

 Einfluss einer intensiven Kultur stehen und 2) die Vegetationsfär- 

 bung hochkultivierter Teiche. 



Es werden nähere Mitteilungen gegeben über die Verhältnisse 

 bei diesen verschiedenen Vegetationsfärbungen. N. Wille. 



Bresadola. Diagnoses novarum specierum Polyporacearuni 

 ex India occidentali et orientali. (Mededeel. 's Rijks Herb. 

 Leiden. 4. p. 75, 76. 1911.) 



Polyporus Goethartii, Java, Coli. Junghuhn, nearest P. vallatus] 

 Fontes latissimiis , ] 2iV^ , intermediate between F. hornodemus M.oxii. 

 and F. hippopus (Willd.) Bres.; F. suhendothejus , Curagao, per- 

 haps allied to F. endothejus Berk.; F. surinamensis, Suriname, 

 nearest F. rirnosus Berk. Jongmans. 



Doidge, E. M., South African Ferisporiales : 1. Perisporiaceae. 

 (Ann. Meet. R. Soc. S. Africa. 15th Sept. 1915.) 



The Perisporiaceae and allied fungi are very plentiful in South 

 Africa, especially in forest regions and in warm districts with a 

 fairly plentiful raintall. The specimens in the Union Mycological 

 Herbarium are mostly from the Woodbush forests in the Zout- 

 pansberg, from the Knysna and from the coast regions of 

 Natal; there is also a fair sprinkling from other parts of the coast 

 and from Natal as far inland as Pietermaritzburg. The Middle 

 and High Veld of the Transvaal are only represented by a Single 

 specimen, a species of Diineriella coUected at Bandolier Kop. 



All that is known of the S.A. Ferisporiales up to the present is 

 comprised in diagnoses and descriptions of fungi collected b}'^ Pro- 

 fessor MacOwan and Dr. J. Medley Wood, and in a few des- 

 criptions of fungi more recentty collected and published in the 

 Annales M^'^cologici and elsewhere. 



All the earlier work was done in het Grahamstown District 

 and the Coast Region of Natal, so that a large part of the Union 

 was left totally unexplored so far as this group was concerned. 



Author's Abstract. 



Humphrey, C. J. and R. M. Fleming. The toxicity to fungi 



of various oils and salts, particularly those used in 



wood preservation. (U. S. Dept. Agric. Bur. Plant Industry. 



Bull. 227. p. 1—38. pl. 1—4. August, 1915.) 



Report of a large number of tests upon the toxicity of eighteen 



wood preservatives to the two wood-destroying fungi, i^ow^s awwosw.s 



and Bornes pinicola. The method consisted in inoculating mixtures 



of an agar medium and preservative in Petri dishes with wefts of 



myceUum of the fungi, and placing the dishes in an incubator at 



25 C, for periods ranging from four to ten weeks, for Observation 



of the development of the fungi. In this way the concentration 



which would prevent the growth of each of the fungi was determined 



for each of the preservatives. This method is said to give indicatory 



results in a relatively Short time. Certain inaccuracies may result 



