282 SUMMARY OF CURKENT llESBARCHES RELATING TO 



Rostronitschkia, a New Genus of Pyrenomycetes. — A. M. 

 FiTZPATRiCK {Alijcologia, 1919, 11, 163-7, 1 pi.)- The fungus is 

 parasitic on the leaves of Gesneria albiflora in Porto Rico, and was first 

 called Nitschkia neroincola. It differs from Nitschkia in the long beak 

 of the perithecium. A. L. S. 



New Species of Rust, Puccinia Corteyi Ran. — N. RANO'iEViTCH 

 {Bull. Soc. Mycol. France, 1919, 35, 110-1, 1 fig.). The rust was 

 found by the author of the paper on the rare plant Heradeum mminmm. 

 It differs from allied rusts in the form and the deeper brown colour of 

 the teleutospores. A. L. S. 



Notes on Some Polemoniaceous Rusts.— C. R. Orton {Mycologiay 

 1919, 11, 108-80). This paper has been written to clear up pro- 

 blems of nomenclature both of host and parasite in this group of 

 rusts. The author has critically examined all the species, and publishes 

 diagnoses and notes. A. L. S. 



Smuts and Rusts of Utah. III.— A. 0. Garrett (Mycologia, 

 1919, 11, 202-15). The author lists four species of Ustilago with a 

 numerous series of Uredinales belonging to many genera. The host 

 plant is always given, and, in addition, biological and historical notes. 



A.L.S. 



Revision of the British Clavariae. — A. D. Cotton and E. M. 

 Wakefield {Trans. Brit. Mycol. Soc, 1919, 6, 164-98). As first 

 outhned, the work undertaken in 1905 should have included all the 

 Clavariae, but it was found necessary to deal with European, more 

 especially with British species. Much use has been made of microscopic 

 structure combined with field characters. The list given in this revision 

 consists of thirty-seven species, six of which have been determined as 

 new during the course of the work. A key to the British species is 

 given, and then follows a diagnostic and descriptive account of all the 

 British members of the genus. A. L. S. 



Development of Stropharia epimyces. — This fungus is always a 

 parasite on another Agaric. It grew in great abundance at Urbana, 

 Illinois, in the summers of 1915-16, and has been collected and studied 

 by W. B. McDouCxAL {Bet. Gaz., 1919, 67, 258-63, 10 figs.). It is the 

 development of the carpophore rather than the nature of the relationship 

 between host and parasite that has engaged the writer's attention. He 

 places it in the same group as Agaricus campestris, in which the hymeno- 

 phore primordium appears before any other part of the carpophore is 

 differentiated ; the distinction of pileus and stem comes at even a later 

 stage. The /Stropharia grew on Coprinus comatus ; it had previously 

 been found on G. atramentarius. A. L. S. 



Relationships within the Rhodosporeae. — In a posthumous paper 

 by G. F. Atkinson {Bot. Gaz., 1919, 67, 267-8) there is outlined a 

 study of the lamellge of the pink-spored Ag-arics. The author finds twi 

 distinct types indicating two phyletic lines : (1) the Plutiueae, with 

 cystidia and separable pileus, etc., including Flutetis and Volvaria ; 



