90 The Scottish Naturalist. 



Differs from the type chiefly in the sporidia, which measure 12- 

 16 by 3-4 (instead of 20-25 by 7-9, as stated by Saccardo). 

 On Pot. Tormentilla near Aberdeen, in July. I have found 

 two intermediate forms also in the East of Scotland, viz., 

 on Potentilloz Anserina, with sporidia 14-20 by 4-5, near 

 Montrose, and on Pot. Comarum, with sporidia 18-21 by 

 3-4, near Aberdeen. These may be distinguished as 

 vars. P. Anserinoz and P. Comari. 



Ooryneum Comari sp. n. 



Pustules (grouped in ill-defined, darker spots in leaves) circular, 

 about 50-60 across, with conspicuous pore, sporidia honey- 

 yellow, darkening to pale brown, straight, broadly fusiform, 

 25-30 by 4-5, triseptate. 



On Pote7itilla Comarum in a marsh, a few miles north of 

 Aberdeen, in August. 



The following additions have been made in the above groups 

 to the Scotch flora since August 1886 : 



Phyllosticta Helianthemi Roum., on Helianthemum vulgare, 

 near Dunottar and near Aberdeen ; P. Teucrii S. and Sp., 

 on T. Scorodonia ; common; P. Galeopsidis Sacc, on 

 G. Tetrahit, near Aberdeen ; P. Ajugse S. and Sp., on A. 

 reptans, associated with Ramularia Ajugae, at Kingcausie, 

 near Aberdeen, in October; Phoma melaena (Fr.) Mont., 

 on Astragalus glycyphyllus, at St Cyrus ; P. deusta Fckl., 

 and P. COmplanata (Tode) Desm., both on dead stems of 

 Rhinanthus Crista-galli, near Aberdeen, in January ; P Oal- 

 lunae Karst., on Calluna vulgaris, near Aberdeen, in winter ; 

 P. Berkeley! Sacc, on Urtica dioica, Sambucus nigra, 6c., 

 (it is a stage of Phomatospora) near Aberdeen, in winter ; 

 P. Saligna Fr. (a stage of Linocera Caprece Fckl.) on de- 

 . cayed leaves of Salix ci?ierea near Aberdeen in February ; 

 P. neglecta Desm., in culm of Juncus effiusus, near 

 Aberdeen, in January ; Cytospora leucosperma (Pers.) 

 Fr., on Rose twigs, near Aberdeen in winter ; Conio- 

 thyrium Hederae (Desm.) Sacc, on dead twigs of Ivy, 

 near Aberdeen, in February ; Diplodia Rhododendri 

 Bell, on Rhododendron, near Aberdeen, in September ; Asco- 

 Chyta malvicola Sacc, on Malva sylvestris, near Aberdeen ? 

 in September ; A. Plantaginis S. and Sp., on Plantago 



