ISAKIA. 449 



Isaria intricata, Fries, Syst. Myc., iii. p. 278 ; Sacc., Syll., 

 iv. n. 2802. 



On various species of decaying or dried up fungi. 



Isaria citrina. Pers. (fig. 16, p. 442.) 

 Gregarious, springing from a yellow stroma; yellowish, 

 very much branched, villous and powdered with the white 

 conidia, feathery above ; conidia subglobose, 3-4 //,. 



Isaria citrina, Pers., Syn., p. 689 ; Sacc., Syll., iv. n. 2801. 

 On decaying fungi, also on trunks, &c. 



Isaria umbrina. Pers. 



Caespitose ; clavate, branched, salmon-colour ; branches 

 divided, straight, tips rather flattened, everywhere villose ; 

 conidia obovate, pale brown, 5-6 X 3 p.. 



Isaria umbrina, Pers., Syn., p. 687; Sacc., Syll., iv. 

 n. 2807. 



About 2 lines high. On Hypoxylon coccineum, of which it 

 is the conidial form. 



[Isaria microscopica, Grev., Scot. Or. Fl., t. 3 = Stilbum 

 tomento8um.~\ 



**** On wood or bark. 



Isaria Priesii. Mont. 



Minute, up to 2 mm. high, whitish, fasciculate, erumpent, 

 villous, conidia oblong, 3-4 //, long. 



Isaria Friesii, Mont., Ann. Sci. Nat., ser. ii., vi. p. 28, t. 12, 

 f. 3 ; Sacc., Syll., iv. n. 2809. 



On the bark of branches, bursting through the epidermis. 

 Sometimes greyish or yellowish. 



Isaria muscigena. Cke. & Mull. 



Pallid. Stroma erect, simple or forked, compressed, 1-2 

 lines high, gregarious, but not fasciculate ; conidia large, 

 sphaeroidal, 89 //, diameter, hyaline. 



Isaria mmciyena, Cke. & Mull., Grev., vol. xvi. p. 81. 



Among Hypnum serpens, on trunks. 



Isaria albida. Fr. 



Gregarious, white, club-shaped, about 1 line high, club 

 sometimes forked ; conidia elliptical, 6 x 4 /x. 

 Isaria albida, Sacc., Syll., iv. n. 2814. 



VOL. III. 2 G 



