2 1 8 British Uj^edinecE and UstilazinecB. 



ated, smooth, very pale yellowish brown, 30-50 x 15-20/x. 

 Pedicels very long, persistent, hyaline. 



Synonyms. 



Puccinia annularis (Strauss). Winter in Rabh., " Krypt. Flor.," 

 vol. i. p. 165. 



Uredo annularis. Strauss (in "Wetter. Annal.," vol. ii. p. 106). 



Puccinia scorodinicB, Link. Cooke, " Hdbk.," p. 497 ; " Micro. 

 Fungi," 4th edit., p. 205. Berk., " Eng. Flor.," vol. v. p. 364 

 Johnst., "Flor. Berw.," p. 194. 



Exsiccati. 



Cooke, i. 31 ; ii. 329 ; " L. F.," 9. Vize, " Fungi Brit.," 17 ; 

 " Micro. Fungi Brit.," 123. 



On Teucrium scorodonia. 

 September and October. 



Biology. — The sori occur on the under side of the leaves, on 

 brown concave spots. As I understand Schroter, he considers the 

 production of those spores which germinate at once ceases with the 

 cold weather, and that the spores produced under the influence of a 

 low temperature, as well as those which are found late in the year, 

 surrounded by a circumferential zone of dead leaf-tissue, retain their 

 power of germination until the following year. 



TRIPHRAGMIUM. Link. 



Teleutospores separate, pedicellate, composed of three cells 

 placed laterally, which are triangular in form and firmly held 

 together, each cell having a single germ-pore. 



BRACHYTRIPHRAGMIUM. 



Having spermogonia, uredospores, and teleutospores. 



Triphragmium ulmarise. (Schum.). 



Primary uredospores— VQrn?i\, spermogonia flattish, spermatia 

 about 6/x long. Sori hypophyllous, very large, pulverulent, 

 mostly on the petioles and venation, causing elongated swell- 

 ings, which greatly distort the affected leaves by preventing 



