The Scottish Naturalist. 121 



* 



deen, along with Diaporthe pulla, of which it is the sper- 

 gonium. 

 Pycnidia crowded under the darkened epiderm, sporidia oblong 

 or elliptical, 7-8 by 3, hyaline, biguttulate, basidia curved, 



12-15 y * 



*i6. P. Berkeleyi, Sacc, 796. (D. and R. Trail, Sc. Nat., 1887, 

 p. 90.) 

 In wood of dead branches and stems of Sambucus nigra 

 (Elder), Urtica dioica (Nettle), and Lychnis diurna (Red 

 Campion). 

 Common near Aberdeen, along with Phomatospora Berke- 

 leyi, Sacc, of which it is the spermogonium. It is very 

 inconspicuous. 

 Dee. 

 Pycnidia sub-gregarious, immersed, sub-globose, papillate, the 

 papilla alone being visible; sporidia oblong or sub-cylindrical,. 

 7-10 by 2, hyaline, biguttulate. 



b. On Leaves of Woody Dicotyledons. 



17. P. geniculata, B. and Br., 604, C. 88, M. 1 105. (Sub 



Sphceropsis geniculata, M. 1105.) (D. Anderson, R. 

 Stevenson, in M. Scot.) 

 On leaves of Pinus St?-obus. 

 Tay (Menmuir). 



18. P. Sorbi (Lasch.), Sacc, 634, C. 88, M. 1146. (Sub 



Sept or ia Sorbi.) 

 On leaves of Pyrus (Sorbus) Aucuparia. 

 Tay, Ross. 



19. P. Ralfsii (B. and Br.), Sacc, 672, C. 94, M. 11 04. (Sub 



Sphaeropsis Ralfsii.) (D. Anderson.) 

 On leaves of Hedera Helix (Ivy). 

 Tay (Menmuir). 



c. On Herbaceous Dicotyledons. 



20. P. longissima (Pers.), West., 746, C in, M. 1065. ( D - 



and R. Johnstone.) 

 On stems of Umbelliferae. 

 Tweed (Berwick). 

 *ai. P. complanata (Tode) Desm., 751, C. 112. (D. and R. 

 Trail, Sc Nat., 1887, p. 90.) 



