The Scottish Naturalist. 263 



2-pluriseptate, ends with 1 cilium on each, yellowish or 

 hyaline ; basidia rod-like. 

 1 79. D. Artocreas (Tode), 3485, C.578 (R. Cooke in GrecUlea, 

 1S86, p. 107. 

 On leaves of Fagus (Beech), &c. 

 Tay (Perth). 

 Pycnidia gregarious, innate, orbicular, black, shining, at first 

 convex, smooth ; then, after a time, collapsed and 

 wrinkled-plicate ; sporidia fusoid, ends rounded, 3- 

 septate, 14-22 by 2-3J, terminal cilia 10-15 l n g' 

 180. D. alnea (Pers.) Berk., 3486, C.579, M.i 122. 

 On leaves of Alnus glutinosa (Alder). 

 Forth, Tay, Moray. 



XXXI. Actinothyrium Kunze. 



Pycnidia dimidiate, clypeate, readily falling off, not opening or 

 scarcely so, membranaceous, margin with a radiating 

 fringe of cells, dark ; sporidia filiform, hooked, hyaline. 

 *r8i. A. graminis Kunze, 3507, C.580, M.noo. 



On dead grass stems and leaves. Autumn to spring. 

 Tweed, Forth, Tay, Dee. 



XXXII. Leptostromella Sacc. 



Pycnidia subcutaneous, then almost superficial, elongate, de- 

 presso-convex, subcarbonaceous, dark, marked with a 

 longitudinal furrow j sporidia rod-like or filiform, uni- 

 cellular or indistinctly septate, hyaline ; basidia rod-like. 

 *i82. L. hysterioides (Fr.), Sacc, 3513; no previous record 

 as Scotch. 

 On dead stalks of Ligusticum Scoticum, in September, on 

 rocks at Portlethen, near Aberdeen. 

 Dee. 

 Oblong, convex, black; sporidia cylindrical, 18-20 by 2, rather 

 curved, hyaline, often showing guttules. 

 Fam. 4. Excipulace/E Sacc. 

 Pycnidia shaped like a cup or saucer, or as in Excipula, or 

 hysterioid, at first nearly closed, but soon opening 

 widely, membranaceous or carbonaceous, dark, eru n- 

 pent or superficial. 



Hyalospor.e Sacc. 

 Sporidia globose, ellipsoid, or oblong, i-celled, sub-hyaline. 



