38 FUNGUS-FLORA. 



LOPHODERMIUM. Chev. 



Ascophore innate, more or less elliptical, membranaceous, 

 black, dehiscing by a narrow longitudinal slit ; asci clavate, 

 often narrowed at the apex, 8-spored ; spores needle-shaped, 

 nearly as long as the ascus, hyaline, guttulate, arranged in a 

 parallel fascicle in the ascus ; paraphyses slender, often wavy 

 at the apex. 



Loplwdermium, Chev., Flor. de Paris, i. p. 436 ; Eehm, 

 Krypt.-Flora, Hyst., p. 37 ; Sacc, Syll., ii. p. 791. 



Hysterium, of many authors. 



Distinguished by the membranaceous excipulum, and the 

 parallel fascicle of hyaline, continuous, needle-shaped spores, 

 almost as long as the ascus. 



The ascophores are often gregarious on bleached spots on 

 dead leaves or stems. 



A. — On Monocotyledons. 



Lophodermium typhinum. Lambotte, Flor. Myc. 

 Belg., ii.* p. 590 ; Eehm, Krypt.-Flora, Hyst., p. 47 ; Sacc, 

 Syll., ii. n, 5832. 



Gregarious, elliptic-oblong, ends blunt, the long axis 

 always parallel to the long axis of the leaf, covered by the 

 epidermis, at length naked, black, lips slightly swollen, slit 

 narrow, 1—4 mm. long ; asci cylindric-clavate, thick-walled 

 above, apex narrowed, 8-spored ; spores needle-shaped, hya- 

 line, continuous, slightly curved, nearly as long as the ascus, 

 arranged in a parallel fascicle; paraphyses slender, about 

 2 (j. thick, longer than the asci, tips wavy, hyaline. 



Hysterium typMnum, Cke., Hdbk., p. 764. 



On dead leaves of Typlia latifolia and T. angustifolia. 



Specimen determined by Berkeley, examined. 



Lophodermium arundinaceum. Chev., Flor. Paris, 

 p. 435 ; Eehm, Krypt.-Flora, Hyst., p. 45 ; Sacc, Syll., ii. 

 n. 5823. 



Scattered or gregarious, innate, more or less prominent, 



