382 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Wales ; and Phoma quercella, not previously gathered in Britain. A list 

 of the species found is added. 



The autumn foray was held at Haslemere, when officers were 

 elected, various scientific papers read and discussed, and excursions made 

 during the week to collect specimens, which were subsequently named 

 and exhibited at the Haslemere Natural History Museum ; 562 species 

 of fungi were listed during the foray. Several species new to science 

 or new to Britain were announced. There were also forty-two species of 

 Mycetozoa recorded by Gulielma Lister. 



The President of the year, A. D. Cotton, gave an address to the 

 members on " Some suggestions as to the Study and* Critical Revision 

 of certain genera of the Agaricaceas," which he considered from three 

 points of view — (1) the need of such revision : (2) possible lines of in- 

 vestigation ; and (3) some practical suggestions with regard to the 

 methods of securing results. Cotton urges not only the importance of 

 a sound knowledge of field-characters, but also the microscopic struc- 

 ture and the characters that are peculiar to the different genera and 

 species, such as spores, cystidiu, and gill-margins. In the latter struc- 

 tures Rene Maire recognized three types of systematic importance : 

 " Homomorphic, when the edge is of the same structure as the surface 

 or lateral face of the gill ; heteromorphic, when, owing to the presence 

 of cystidia or other elements, it is different ; and sub-heteromorphic, 

 when there is a preponderance of hairs or cystidia, which are already 

 present in small quantity on the surface." Methods of work were 

 suggested, and advice given as to the best lines on which to under- 

 take investigations. 



J. W. Ellis * publishes a series of microscopic fungi new to Britain, 

 two of them parasitic leaf-species, Septoria taraxaci and Glaosporium 

 lonicerse, being new to science. Diagnoses are published of all the 

 species, with critical explanatory notes. 



A new species from Devonshire, Pleospora hejjaticola, is described by 

 W. Watson, f He found the perithecia on the leaves of liverworts. 

 The species is akin to P. muscicola, which grows on the moss Bryum 

 pendulum, but it differs in spore and other characters. 



J. S. Bayliss Elliott % gives an account of the growth and form of 

 a new variety of microscopic fungus, Sepedonium mucorinum Harz. 

 var. botryoides. It forms a dense pale-buff mycelium in culture. The 

 conidiospores are of varying lengths and are usually branched ; the 

 conidia are large, at first smooth, then warted. The species is recorded 

 as growing on various Mucors. The variety did not seem to be parasitic. 



Carleton Rea § contributes a paper on " New and Rare British 

 Fungi," chiefly the larger Basidiomycetes and Ascomycetes. Diagnoses 

 are given of the species which are new to this country. One species, 

 Clitocybe albocinerm Rea, is new to science. It has been found in three 

 localities, in Hampshire, Shropshire, and Worcestershire. Copious 

 critical notes accompany the diagnoses. The paper is well illustrated by 



* Traus. Brit. Mycol. Soc, iv. 2 (1914) pp. 292-5. 



t Traus. Brit. Mycol. Soc, iv. 2 (1914) p. 295. 



J Traus. Brit. Mycol. Soc, iv. 2 (1914) pp. 296-7 (1 pi.). 



§ Traus. Brit. Mycol. Soc, iv. 2 (1914) pp. 307-17 (3 pis.). 



