The Scottish Naturalist. 187 



CC. Growing on branches or stems ; sporidia usually bear no 

 appendages. Diplodina* 



XIV. Ascochyta. 



Causing discoloured spots on leaves or branches ; pycnidia innate, 

 depressed, spherical or lenticular, opening by a pore, mem- 

 branaceous ; sporidia as stated for section. 



Very similar to Phyllosticta and to Septoria in the spots they pro- 

 duce ; possibly connected with these forms in the genetic 

 cycle, and also with Sphcerella and its allies among Pyreno- 

 mycetes, as the spermogonia. 



c 



a. On Leaves of Woody Dicotyledons 



68. A. metulsespora B. and Bf. 2134, C. 459, M. 1159 (D 



Stevenson, 1877, R. B. & Br., No. 1730). 

 On Fraxinus excelsior (Ash). 

 Tay (Glamis). 



b. On Herbaceous Dicotyledons. 



69. A. Pisi Lib. 2197, C. 462, M. 1 1 57 (D. & R. Stevenson). 



On leaves of Pisum sativum (garden pea). 

 Tay, Dee, Moray. 

 *7o. A. Vicise Trail (D. & R. Trail, Sc. Nat. 1887, p. 87). 

 On pods and leaves of Vicia sepium near Stonehaven. 

 Dee. 

 *7i. A. Lathyri Trail (D. & R. Trail, Sc Nat., 1887, p. 87). 



On dead leaves of Lathyrus sylvestris at St. Cyrus, near Mon- 

 trose, in April. 

 Tay. 

 *72. A. Dianthi (A. & S.)Berk. 2203, C. 463, M. 1158 (D. White, 

 R. Stevenson in My col. Scot.) 

 On leaves of Dianthus, Lychnis Flos-Cuculi, &c. 

 Tay, Dee, Moray. 

 *73- A. malvicola Sacc. 2210 (D. & R. Trail, Sc. Nat. 1887, p. 90) 

 On living leaves of Malva sylvestris, near Aberdeen, in autumn. 

 Dee. 

 Spots roundish or somewhat angular, black, becoming dry and 

 pale in centre ; pycnidia scattered, dark brown, lenticular ; 

 sporidia cylindrical, ends obtuse, 18-20 by 3^-4. 

 *74- A. microspora Trail (D. & R. Trail, Sc. Nat. 1887, p. 8^). 



