PHYTOLOGY. 



DESCRIPTION OF A SCOTTISH VENTURIA (fungi 

 sphjeriacei) NEW TO SCIENCE. 



By M. C. COOKE, M. A. 



Venturia atramentaria n. sp. — Hypophyllous, gregarious, 

 forming irregular patches upon discoloured spots. Perithecia 

 subglobose, clad with short, dense, patent hairs, black. Asci 

 cylindrical ; sporidia uniseriate, elliptic (immature). 



On the under-surface of living but fading leaves of Vacciniam 

 uliginosum : Lochnagar, Sept., 187 1 (Buchanan White). 



This species differs from Venturia myrtilli in the larger 

 perithecia, shorter and denser hairs, and in its gregarious 

 habit, since it forms small but black patches on the green 

 leaves, at once recognised by the naked eye, whereas the 

 scattered perithecia of V. myrtilli can scarcely be seen without 

 a lens. The affinities of V. atramentaria are rather with such 

 species as V. Dickiei. 

 London, February, 1872. 



SCOTTISH GALLS. 



B Y J. W. H. TRAILL, M.A. 

 (Concluded from p. x$9-J 



Salix aurita L. — Somewhat like (b) on S. caprea. 



Salix repens L. — Galls red and very conspicuous on the 

 upper surface. Form irregular, size small. Frequently 

 several on a leaf. Each contains one hymenopterous larva. 

 On a few plants in Braemar. 



Salix nigricans Sm. — The galls are green, smooth, and oval 

 in shape. They occur in pairs, one on each side of the 



