The Scottish Naturalist. 189 



*8o. A. Rosae (Lib.) Fr. 2257, C. 456, M. 1167 (sub Asteroma 

 Rosa D.C). 

 On living leaves of Roses. 



Tay, Argyle, Dee, Moray. 



XVI. Darluca Cast. 

 Usually parasitic on Uredinea; pycnidia globular, subpapillate) 

 superficial, membranaceous ; sporidia oblong or fusoid, two- 

 celled (1 cross septum), each end tipped with mucous append- 

 age, hyaline. 

 *8i. D. filum (Biv.) Cast. 2263, C. 458, M. n 18. 

 On various Uredin&z. 

 Tay, Dee, Moray. 



XVII. Diplodina West. 



Pycnidia subcutaneous, or erumpent, subglobose, papillate, dark, 

 nearly smooth j sporidia as in Diplodia, but hyaline. 

 *82. D. Ammophilae Trail (D. & R. Trail, Sc. Nat. 1885, p. 76), 

 S.M. 3036, C. 262. 

 On leaves of Psamma armaria, near Aberdeen. 

 Dee. 

 (Note. This fungus always has the sporidia tipped as in Darluca. 

 It should be compared with Ascochyta perforans (Rob.) 

 Sacc, which grows on the same host plant ; since the figures 

 show the sporidia of the latter to be a good deal like those of 

 D. Ammophilce, there being a hyaline appendage at one end 

 in some, though the description makes no mention of this 

 character.) 



5. Ph^eophragmle. 

 Pycnidia as in the other sections ; sporidia oblong or fusiform, 

 2-plmi-se])tate, sooty or olive-brown. 



XVII. Hendersonia Berk. 



Pycnidia subcutaneous, erumpent, or nearly superficial, spherical, 

 or depressed, often papillate, membranaceous or subcarbona- 

 ceous, dark ; sporidia as given above. This genus is scarcely 

 separable from Stagonospora, as the species grade from the 

 one to the other in tint of the sporidia, with no clear line of 

 separation. 



a. On Dicotyledons. 

 ^83. H. sarmentorum West., 2293, C. 264 (Cooke's Handbook 



1279, D. & R. Trail, i887, p. 91). 



