ASCOMYCETES 363 



Pycnidia = Phyllosticta beijerinckii^ Vtiill. Perithecia 

 globose, pierced, surrounded by septate hyphae, 150 \i 

 diam., conidia elliptical, 6x5^, extended in a viscid 

 tendril. Considered by Vuillemin as the higher form of 

 Coryneum beyerinckii. 



Dimerosporium, Fuckel. Perithecia superficial, mouth- 

 less, membranaceo-carbonaceous ; asci short, 8-spored ; 

 spores i -septate, hyaline or fuscous ; mycelium copious, 

 black, subcrustaceous, often bearing conidia. 



Dimerosporium mangiferum, Sacc., SylL, i. p. $$=Cap- 

 nodium mangiferum, Cke. and Broome, Grev. iv. p. 117. 

 Effused, sometimes almost covering the entire surface of 

 the leaf, amphigenous, velvety, intense black ; perithecia 

 narrowly ovate, elongated; asci broadly piriform, 48-50 x 

 30 /u, ; spores 8, hyaline, i-septate, elliptical, slightly con- 

 stricted at the septum, 12-15 x 5-6 /*. 



Meliola, Fries. Perithecia seated on superficial spots 

 or effused patches of black, radiating mycelium, globose, 

 mouthless, membranaceous, often surrounded by specialised 

 bristles or appendages ; asci often short and broad, 2-8- 

 spored ; spores typically oblong, 2-5-septate, fuscous ; 

 sometimes truly continuous or muriform, hyaline, or 

 fuscous. 



Meliola penzigii, Sacc., Sy/t., i. 70. Mycelium crus- 

 taceous, effused, black, readily peeling off ; perithecia 

 subglobose, superficial, glabrous, springing from threads 

 of mycelium, umbilicate, black, 150-160 p diam. ; asci 

 obovate, apex rounded, sessile, 8-spored ; spores distichous 

 or irregularly grouped, ovate-oblong, 3-septate with one or 

 more vertical septa also, constricted, 11-12X4-5 /*, hyaline 



