52 Transactions British Mycological Society. 



Libertella hJepharis A. L. Sm. 



Described in Trans, i. p. 155, 1900 on branches of Prunus 

 cerasus and Pyrus mains, collected by D. A. Boyd in Ayr- 

 shire. It has been again found in Ayrshire at Stevenston, also 

 by Mr. Boyd, on branches of Crataegus oxyacantha. It is 

 characterized by the strongly falcate spores measuring up to 

 40/7. in length. 



Amerosporium patellarioides n. sp. 



Pycnidiis superficialibus, subsphaericis vel ellipsoideis 

 ca.ymm. long, tandem siccis collabescendo patellaribus, 

 atro-brunneis, sparse pilosis ; pilis erectis, septatis, brunneis 

 25o/-t X lo/t, Apice obtusis et subhvalinis, sporophoris 

 gracilibus, ^amosis ; sporis cylindraceo-fusiformibus 8-io/x 



X 2/x. 



In foliis dejectis Rosac caninac. Coll. D. A. Boyd, 

 Kilwinning, Ayrshire, Jan., 1916. 



The peridium is composed of rusty-brown, strong-walled 

 cells. The whole pycnidium is swollen when moist, and 

 collapses to a concave form when dry. It is possible that 

 the above may be identical with Amerosporium chaeto- 

 stroma (Berk, and Br.) Sacc. But there is no specimen of 

 this fungus either in the herbarium of the British Museum 

 or at Kew. Miss Wakefield has kindly given dimensions 

 from A. macrotrichum (Berk, and Br.) : — hairs varying 

 from 230/'. to 810// X 12-15//. ^nd spores lunate-fusiform, 

 5-6//. X 5//.. 



HYPHOMYCETES. 



Ramularia umbrosa n. sp. 



Maculis purpureo-brunneis, effusis, magnam partem 

 foliorum necantibus ; caespitulis minutis, gregariis, epi- 

 phyllis; conidiophoris e base brunneolo parenchymatico 

 ortis, dense fasciculatis, simplicibus, parum flexuosis, saepe 

 subgeniculatis et dentatis, sursum attenuatis vel obtusis; ca. 

 25/jt X 4/>i ; conidiis cylindraceo-ellipsoideis, interdum catenu- 

 latis, simplicibus, hyalinis, io-16/x x 2/j.. 



In foliis vivis Saxifragae tunbrosae. D. A. Boyd, West 

 Kilbride, Ayrshire, ^lay, 191 7. A hypophyllous species 

 R. Saxifragae S>yd. has been described, which differs in the 

 characters of the fertile tufts as well as in their position on the 

 leaf. 



Zygodesm us fulv us Sacc. Mich. II. p. 147, 1880-82. 



Recorded by W. B. Grove in Journ. Bot. Iv. p. 136, 1917, 

 from Lvndhurst, Hants, collected bv Dr. J. S. Bayliss 

 Elliott. ' 



