(339) 



Melanconiaceae. 

 Colletotrichum cerei sp. nov. 



Thickly scattered over considerable areas, without definite 

 spots ; ascervuli black, buried, long covered by the epider- 

 mis which is pierced by the slender bundle of setae, at length 

 exposed by the falling away of the epidermal covering ; 

 setae few, usually centrally fascicled, black or dark brown, 

 septate, irregularly tapering upward, about 70 fx long by 6-7 

 ft wide at base; sporules irregularly oblong, 18-22 x 6-7 ft, 

 hymenial layer of dark, somewhat regular, parenchymatous 

 cells 6-7 /j. in diameter. 



On dying Cereus triangularis, Sanibel Island, Fla., May 



16, 1901, S. M. Tracy, no. 7309. 



Dematiaceae. 

 Verticicladium effusum sp. nov. 



Hypophyllous, forming widely effused, irregular, dark 

 olivaceous areas ; mycelium superficial, of pale brown, creep- 

 ing, frequently septate threads, 3-3 y 2 ji in diameter; conidio- 

 phores resembling the mycelium threads, erect, at first simple, 

 at length sparingly branched about the middle, 75-150 x 3- 

 31^ ft; conidia narrowly elliptic, hyaline, continuous, 8-10 

 X 3 ft. 



On languishing leaves of Coccoloba uvifera, Sarasota 

 Key, Fla., May 12, 1901, S. M. Tracy, no. 7316. 



Sporoschisma Tracyi sp. nov. 



Covering conspicuous gall-like swellings 1 cm. in diameter ; 

 conidiophores blackish-brown in mass, dark yellow under the 

 microscope, densely fioccose or subfascicled, suberect, vari- 

 ously flexed, 300-400 x 15 fi ; conidia internal, escaping 

 from the broken ends of the conidiophores (sporangia?), dark 

 yellow, cylindrical, ends rounded, at first 2-septate, becom- 

 ing several-septate, usually 35-40 x 14 /i, sometimes larger. 



On dead twigs of Ilex sp., Sanibel Islands, Fla., May 16, 

 1901, S. M. Tracy, no. 7308. 



This is a conspicuous addition to a small and poorly under- 

 stood genus. It can hardly properly belong to the Demati- 

 aceae when it is placed both by Saccardo in Sylloge Fungorum 

 and by Lindau in Engler & Prantl, Pflanzfamilien. The 



