346 FUNGUS-FLORA. 



3-5-4 fji, hyaline, continuous, rather acute at both ends, 

 catenulate. 



Ramularia lapsanae, Sacc., Mich., ii. p. 549 ; Sacc., Syll., 

 n. 1008. 



On the under surface of living leaves of Lapsana communis. 



Ramularia pruinosa. Speg. 



Spots at first small, soon coalescing and covering the 

 greater portion of the leaf, ochraceous ; tufts densely gre- 

 garious, whitish, pruinose ; hyphae suberect, continuous, 

 40-60 x 3-4 /n, apex 1-3 denticulate ; conidia cylindrical, 

 and rounded, 20-30 x 34 //,, becoming 1-septate, colourless. 



Ramularia pruinosa, Speg., Mich., ii. p. 170; Sacc., Sjll., 

 iv. n. 1022. 



On leaves of Senecio jacobaea. 



Ramularia variabilis. Fuckel. 



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

 hyphae fasciculate, flexu >us, continuous, apex very minutely 

 'denticulate; conidia very variable, ovate, obovate, elliptical, 

 ty ideally cylindrical and 1 -septate, colourless, 15-22 X 3-4 p. 



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

 Syll., iv. n. 1030. 



On leaves of foxglove (Digitalis purpurea), Verbascum 

 thapsus, V. blattaria. 



Ramularia calcea. Ces. 



Spots minute, whitish, bounded by a brown margin; 

 hyphae fasciculate, cylindrical, 15-20 X 2 ^, sparingly den- 

 ticulate, hyaline, continuous; conidia cylindrical, slightly 

 obtuse or apiculate at both ends, 25 x 3-3-5 //,, continuous 

 or 1 -septate, hyaline. 



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

 1681; Sacc., Syll., n. 1032. 



On leaves of ground-ivy (Glechoma hederacea). 



Ramularia cryptostegiae. Pirn. 



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

 sparingly branched; conidia cylindric-oblong, apex rather 

 obtuse, 30-40 x 6-7 p., delicately 1-3 septate, apical on the 

 hyphae. 



