346 FUNGUS-FLORA. 



3 '5-4 fi, hyaline, continuous, ratlier acute at both ends, 

 catenulate. 



Mamularia laj^sanae, Sacc, Mich., ii. p. 549; Sacc, Syll., 

 n. 1008. 



On the under surface of living leaves of Lapsana communis. 



per 



Ramularia pruinosa. Spej^ 



Spots at first small, soon roale^cing and covering the 

 greater j^ortion of the leaf, ochraceous ; tufts densely gre- 

 garious, Avhitish, ])ruinose ; hyphae suberect, continuous, 

 40-60 X 3-4 fj., apex 1-3 denticulate ; c -niiiia cylindricil, 

 and rounded, 20-30 x 3-4 /x, becoming 1 -septate, colourless. 



Ramularia pruinosa, Speg., Mich., li. p. 170; Sacc, S^IL, 

 iv. n. 1022. 



On leaves of Senecio jacohaea. 



Ramularia variabilis. Fuckel. 



Tufts lax, tliin, whitish, seated on greenish-brown spots ; 

 hyphae fasciculate, flexu us, continuous, apex very minutely 

 denticulate; conidia very variable, ovate, ohovate, ellipti-'al, 

 typically cylindrical and I -septate, colourless, 15— 22 X 3-4 /x. 



Ramularia variahilis, Fuckel, Symb. Myc, p. 361 ; Sacc, 

 SvU., iv. n. 1030. 



On leaves of foxglove (^Digitalis purpurea), Verhascum 

 tliapjsus, V. hlattaria. 



Ramularia calcea. Ces. 



Spots minute, whiiish, bounded by a brown marjjin; 

 hyjdiue fasciculate, cylindrical, 15-20 X 2 /x, sparingly den- 

 ticulate, h,\ aline, continuous; conidia cylindrical, slightly 

 obtuse or apiculato at both ends, 25 x 3-3*5 fx, continuous 

 or l-se2)tate, hyaline. 



Ramularia calcea, Cesati, in Klotzsch, Herb. MycoL, 

 1681 ; Sacc, Syll., n. 1032. 



On leaves of ground-ivy (^Gleclioma liederacea^. 



Ramularia cryptostegiae. Pim. 

 Snow-wdiite, cottony, very delicate ; hyphae simple or 

 .•sparingly branched ; conidia c\ lindric-oblong, apex rather 

 obtuse, 30-40 X 6-7 jx, delicately 1-3 septate, apical on the 

 hyphae. 



