OVULARIA. 323 



JRamularia alnicola^ Cke., Grev., xiv. p. 40; Sacc, Syll., iv. 

 n. 967. 



On living leaves of Alnus glutinosa. 



Ovularia scelerata. Mass. 



Spots elongated, b^'own, often becoming effused over the 

 greater portion of the leaf ; hypliae short, scattered, generally 

 on the nnder surface of the leaf; conidia cylindric-ellipsoid, 

 rounded at both ends, colourless, 20 X 3*5 /x. 



JRumularia scelerata, Cke., Grev., xiv. p. 40 ; Sacc, Syll., 

 iv. n. 971. 



On livino; radical leaves of Manunculus sceleratus. 



'O 



Ovularia rosea. Mass. 



Spots subochraceous or with a tinge of rose colour; 

 hyphae erect, fasciculate, simple or sparingly forked, tips 

 subdenticulate, colourless, 30-40 X 2* 5-3 /x; conidia fusoid, 

 15-25 X 2-3 fjL, colourless. 



Mamularia rosea, Sacc, Syll., iv. n. 96G. 



On the under surface of living leaves of Salix viminalis, 

 S. triandra, S. vitellina, &g. 



Sometimes the conidia are spuriously 1-septate, due to 

 the division of the protoplasm into two parts, but a true 

 septum is not present. 



Ovularia asperfolii. Sacc. 



Tufts spot-like, depressed, white ; hyphae tortuous, 

 sparingly septate, 50-70 x 4 /x ; conidia elliptical, base sub- 

 apiculate, 10-12 x 7-8 /x, hyaline, inserted on lateral or 

 terminal scars of the hyphae. 



Ovularia asperfolii, Sacc, Fung. Yen., ser. v. p. 186; Sacc, 

 Syll., iv. n. 735. 



On leaves of Comfrey {SymiiJiytum oficinalis). 



Those portions of the surface of the leaf opposed to the 

 spots are yellow. 



Ovularia veronicae. Sacc (fig. 8, p. 274.; 

 Tufts white, often occupying nearly the whole of the 

 under surface of the leaf; hyphae long, branched; conidia 

 cylindric-ellipsoid, one-celled, colourless, size very variable, 

 12-30 X 5-6 IX. 



Ovularia veronicae, Sacc, Svll., iv. n. 742. 



Y 2 



