OVULARIA. 323 



Ramularia alnicola, Cite., Grcv., xiv. p. 40 ; Sacc., Syll., iv 

 n. 967. 



On living leaves of Alnus glutinosa. 



Ovularia scelerata. Mass. 



Spots elongated, brown, often becoming effused over the 

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

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

 rounded at both ends, colourless, 20 x 3- 5 p. 



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

 iv. n. 971. 



On living radical leaves of Eanunculus sceleratus. 



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 p; conidia fusoid, 

 15-25 x 2-3 //,, colourless. 



JRamularia rosea, Sacc., Syll., iv. n. 966. 



On the under surface of living leaves of Salix viminalis, 

 S. triandra, S. vitellina, &c. 



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 //, ; conidia elliptical, base sub- 

 apiculate, 10-12 x 7-8 p., 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 (Symphytom officinalis'). 



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 p. 



Oiularia veronicae, Sacc., Svli., iv. n. 742. 



Y 2 



