Physiologie. — Palaeontologie. — Eumycetes. 525 



raphides dans le parenchyme de la tige et des fleurs des Bromelia- 

 cees Pitcaimia xanthocalyx, Billbergia nutans, ont donn^ les reac- 

 tions du glycogene; celui-ci serait en relation constante avec 

 l'oxalate de chaux, puisqu'il ne se forme que dans les cellules dans 

 lesquelles apparaitra plus tard l'oxalate de chaux sous forme de 

 raphides. Corrado Bonaventura. 



Cockerell, T. A. D., Fossil Flowers and Fruit s. II. (Torreva 

 XII. p. 32—33. Taf. 1. 1912.) 



The author describes pods from the Lamarie formation of 

 Colorado which he names RobUiia mesosoica and also records a 

 pod of Lencaena coloradensis from the Miocene of Florissant, Col. 



Berry. 



Aisberg, C. L. and O. F. Black. Biological and toxilogical 

 studies upon Penicülium puberulum. (Proc. Soc. exper. Biol. 

 and Med. IX. p. 6. Oct. 18. 1911.) 



This species produces a new organic acid, called penicillic acid. 

 It is probably related to the same general class of Compounds found 

 in lichens. Pharmacologically, it is moderately toxic, has an anti- 

 septic action and is a protoplasmic poison. Moore. 



Bergamasco, G., La creduta specie Marasmius Bulliardi Q. 

 non e che una forma teratologica della specie Maras- 

 mius Rotala (Scop.) Fr. (Bull. Soc. bot. ital. p. 228—232. 1911.) 



Tous les caracteres macroscopiques et microscopiques du Ma- 

 rasmius Bulliardi correspondent parfaitement avec ceux du M. Ro- 

 tula; le premier est cependant caracterise par la ramification du 

 corps fructifere. Sur le meme nvycelium naissent des individus ä 

 tige simple (M. Rotula) et des individus ä tige ramifiee (M. Bulliardi); 

 ils ne sont qu'une anomalie du M. Rotula. 



Corrado Bonaventura. 



Brown, W. H., The development of the ascocarp of Leotia. 

 (Bot. Gaz. L. p. 443—459. 1910.) 



This study is centered upon Leotia lubrica and L.chlorocephala. 

 The development of the ascocarp is followed in detail for the two 

 species and then the author comments upon the systematic position 

 of Leotia and certain cytological phenomena also come in for discus- 

 sion. The development of the ascocarp indicates that all of its struc- 

 tures are homologous whith those of the Pesisineae and that Leotia 

 in closely related to the Pesisineae. R. J. Pool. 



Coker, W. C, Another new Achlya. (Bot. Gaz. L. p. 381—383. 

 1910.) 



Achlya caroliniana is here described as a new species belonging 

 to the group Racemosa as proposed by the author in 1908. Eight 

 figures illustrate the structure of the species. R. J. Pool. 



Heald, F. D. and F. A. Wolf. The structure and rela- 

 tionship of Urnula geaster. (Bot. Gaz. IL. p. 182— 188. pl. 12. 1910.) 



In this paper the authors show that the Separation of Urnula 



