ACROTHECA — AETHEINIUM. 373 



subacute at botli ends, many guttulate, not septate, hyaline, 

 18 X 4 /x, in clusters of 2-4 at the tips of the hyphae. 



Acrotheca solani, Sacc, SylL, iv. n. 1342. 



On fading leaves of potato (Solanum tuberosuDi). 



Tribe 5. Arihrineae. Sacc. ' 



AETHEINIUM. Kunze. (fig. 21, p. 358.) 



Sterile hyphae creeping or obsolete ; fertile somewhat 

 simple, hyaline, with thick black septa ; conidia lateral, 

 whorled, often in fours, fusoid, oblong, or columnar, conti- 

 nuous, brown. 



ArtJirinum, Kunze, Heft i. p. 9 ; Sacc, Syll., vol. iv. 

 p. 279. 



Distinguished from Cam^toum by the lateral whorls of 

 conidia. 



Arthrinium caricicolum. K. & S. (fig. 21, p. 358.) 

 Forming small jet-black tufts ; fertile hyphae ascending, 

 rod-like, 50 x 4 /x, apex obtuse, transverse septa crowded, 

 thick, black, remainder hyaline; conidia fusiform, ends 

 obtuse, smoky, 50 x 8 /x, springing from the apex and 

 lateral septa in a verticillate manner. 



Arthrinium caricicolum^ Kunze and Schm., Myk., Heft i. 

 p. 9, t. 1, f. 4; Sacc, Syll., n. 1349. 

 On dead leaves of Carex. 



Arthrinmm sporophleum. Kze. 



Forming small black tufts, hyphae slender, hyaline, 

 nodulose and with crowded black septa, simple, base some- 

 times slightly inflated ; conidia oblong or ovoid, somewhat 

 inequilateral, rather acute at both ends and with a colour- 

 less apiculus, in verticels of four, 9-14 fx long. 



Arthrinium sporophleum, Kunze, Myk., Heft ii. p. 104 ; 

 Sacc, Syll., iv. n. 1350. 



On leaves of Carex and Juncus. 



