1 1 8 The Scdtish Naturalist. 



Spots variable in form and size, often many on a leaf, dry, pale, 

 surrounded with a dark brown border ; pyenidia scattered* 

 lenticular, 100-130 diam., light-brown ; sporidia oblong, 5-7 

 by 3, pale yellowish. , 

 England, Italy. 



* 4. P. Ligustri, Sacc. 107, C. 382 (D. & R. Trail, 1887). 



On fading leaves of Ligustrum vulgare (Privet, around Aber- 

 deen, in Spring.) 

 Dee. 

 Spots dry, pale rufous, or dirty white, with a red-brown border, 

 form and size various ; pyenidia on the upper surface, few, 

 lenticular, 60-80 diam., brown ; sporidia oblong, 5-7 by 2^- 

 3, biguttulate, on short basidia. 

 England, Southern Europe. 



. On Herbaceous Dicotyledons. 

 5 P. Violse Desm. 203, C. 404, S.M. 2178 (R., 1881, Sc. Nat. 

 vi., 1 18). 

 On leaves of Violet. 

 Tay, Argyle. 



* 6. P. Helianthemi Roum. 204, C. 405, (D. & R., Trail, Sc. 



Hat., 1887, p. 96). 

 On leaves of Helianthemum vulgare, near Aberdeen, Autumn. 

 Dee. 

 Spots nearly circular, or confluent, small, pale, with a red-brown 

 border, pyenidia on upper surface of spot, few, dark ; sporidia 

 very small, oblong, 3-4 by 1, sometimes biguttulate. 

 England, France. 



* 7. P. Ulmariae Thuem. 223, (D. & R., Trail, Sc. Nat., 1887, 



p. 40). 

 On leaves of Spiraea Ulmaria, in summer and autumn. 

 Dee (Aberdeen). 

 Spots small, the very small centre being dry, pale, and rather 

 irregular in form ; the broad border is fuscous or purplish 

 brown ; pyenidia on the upper surface few or solitary in 

 each spot, convex, approaching hemispherical, 180 diam., 

 dark ; sporidia numerous, oblong, or slightly dumbbell- 

 shaped, 5-6 by 2 (3^-5 by 2-i\, fide Sacc), hyaline. 

 Siberia. 



* 8. P. scrophularinea Sacc. 254, (D. & R., Trail, no previous 



record). 



