470 Pflanzenkrankheiten. — Lichenes. — Bryophyten. 



Grossenb. In America Melons are affected but not Cucumbers, in 

 England Cucumbers and Tomatoes both suffer. Infected plants 

 soon succumb, the fungus attacking the stems just above the ground- 

 level and speedily killing the tissues of the cortex and phloem. The 

 ascigerous stage has not been observed in this country. No new 

 preventive measures are given. A. D. Cotton (Kew). 



Mickleborough, J., A Report on the Chestnut Blight: the 

 F u n g u s , Diaporthe parasitica, M u r r i 1 1. (Commonw. of Penns. 

 Dep. of Forestry; May, 1909: Harrisburg, Pa.) 



The author gives a general descripton of the chestnut tree 

 fungus, which during late years has been destroying chestnut trees 

 in Eastern United States. He gives a detailed description of 

 its occurrence in Eastern Pennsylvania, followed by a life 

 history of the blight fungus. He calls attention to the entire immu- 

 nity of all other forest trees. He estimates the damage already done 

 in the States of New York, Pennsylvania and Newjersey 

 at not less than $ 12,000,000,00. In the final chapter he deals with 

 suggestions which have been made for remedial treatment, recom- 

 mending the immediate cutting and burning of all infected trees. 



The report is illustrated with one plate showing the character 

 of the fungus and a colored plate showing an infected chestnut 

 branch. Hermann von Schrenk. 



Husnot, T., Joncdes. Descriptions et figuresj des Joncees 

 de France, Suisse etBelgique. (4°. 28 pp. 7 pl. Cahan par 

 Athis [Orne] chez l'auteur. 1908.) 



Cette monographie est redigee sur le meme plan que les Gra- 

 minees et les Cype'race"es du meme auteur. (V. Bot. Centr. 1907. CIV. 

 104). Une clef dichotomique precede l'etude de chaque genre; les 

 especes decrites sont au nombre de 35 pour le genre Juncus (dont 

 4 etrangeres ä la flore de France) et de 14 pour le genre Lusula. 

 On y a Joint 6 formes hybrides. La distribution geographique de 

 chaque espece est indiquee pour la France d'une maniere tres 

 complete. 



Un Supplement aux Cyperacees, oü sont mentionnees quel- 

 ques localites nouvelles, termine cet ouvrage, qui est illustre de 

 dessins originaux de toutes les plantes etudiees. J. Offner. 



Merrill, G. K., Liehen notes no. 9: Pannelia latissima Fee 

 and two commonly associated species. (B^ol. XII. 

 p. 29—31. March, 1909). 



Descriptions and distribution of P. latissima, P. coralloidea (Mey. 

 and Flot.) Wainio and P. cristifera Tayl. Only the last 2 are known 

 to oeeur in continental North America. Maxon. 



Britton, Elizabeth G., Notes on nomenclature. X. (Bryol. XII. 

 p. 28—29. March, 1909). 



Comments upon parts 231, 232, and 233, devoted to mosses, of 

 Engler and Prantl. Die natürlichen Pflanzenfamilien. Maxon. 



