The Scottish Naturalist. 235 



while dense above, has each cell very constricted in the middle, 

 while the outlines of the cells in the other two are merely some- 

 what irregular, but not constricted. 



The apex of the typical specimens of G. subsquarrosa is bluntish, 

 and the hair point is even rather flat at its insertion, but this is not 

 so in Grimmia retracta, the name I propose to give to the 

 moss under discussion. Found beside Loch Tay, July, 1866. 



MY00L0GIA SCOTICA-Suppleinent. 



By REV. J. STEVENSON and Prof. JAMES W. H. TRAIL. 



{Continued from S. N., 1885,^. 192.) 



(All measurements, except where specified, are in thousandths of a 

 millimetre.) 



3064. E. Ung-erianum De By. (Protomyces microsporias 

 Unger). Trail, Scot. Nat. 1884, p. 228 (nee. 1343, MycoL 

 Scolica). 



In yellowish green, afterwards brown, outgrowths, ?W 

 inch across, convex above, concave below, in leaves of Ranun- 

 culus repens, and, less often, of R. acris ; spores densely 

 crowded in the tissues of the spots, globular or oval, 12-20 

 diam. ; outer surface marked with ridges, hyaline to pale 

 brown. July-Oct. 



East. — — Tay Dee Moray — — — 



West. Solway — — — — — 



Local, but frequently abundant. J. W. H. Trail. The plant of 

 Mycologia Scolica is the next species, not this one. 



3061. E. Ficarise F. v. Waldh. Trail, Scot. Nat. 1884, p. 228 

 (=E. Ungeriarum Mycol. Scot. 1343, nee. de Bary ; and 

 conidia=Cylindrosporium Ficariae B., Mycol. Scot. 

 1 1 86). 



In flat spots ( 2 Vi inch across), at first pale green, then 

 whitish, because of development of sporidia from spores still 

 in leaf, afterwards brown ; spores rounded or polygonal, 

 8-12 diam. ; germinating readily, surface nearly smooth, wall 

 rather thin ; colourless to pale brown. 



In leaves of Ranunculus Ficaria, often associated with 

 Peronospora Ficaria. May-July. 



