BOTRYTIS. 319 



Botrytis aclada. Fr. 



Forming minute brownish tufts; hyphae unbranched, 

 septate, erect ; conidia elliptic-oblong, almost colourless, 

 G-8 x 5-6 i*., aggregated in elongated clusters at the tips of 

 the hyphae. 



Botnjtis adada, Fres., Beitr., p. 16, t. ii. f. 23-24; Sacc., 

 Syll., iv. n. 672. 



On decaying onion scapes. 



C. Cristularia. 



Tips of the branchlets scarcely inflated, cristato-crenate or 

 digitate. 



Botrytis depraedens. Sacc. 



Forming grey determinate or confluent spots on leaves ; 

 hyphae colourless, ascending, septate, wavy, unbranched, 

 terminated by elliptical basidia-like cells, the terminal one 

 bilobed; head of conidia globose, subcompact; conidia 

 globose, hyaline, 12 /* diameter. 



Botrytis depraedens, Cooke, some remarkable moulds, 

 Quelet, Micr. Journ., v. ; Sacc., Syll., iv. n. 692. 



On sycamore leaves (Acer pseudo-platanus), which it 

 destroys. 



D. Phymatotrichum. 



Tips of branches inflated and everywhere covered with 

 pointed wart-like projections bearing the conidia. 



Botrytis tricephala. Sacc. 



Tufts minute, elliptical, white, 3 mm. long; sterile byphao 

 hyaline, loosely interwoven ; fertile simple, erect, septate, 

 10 fji thick, simple above or divided into two branches each 

 again divided into 3 short branchlets with globose inflated 

 tips, from which originate the globose conidia, measuring 5 /x 

 diameter. 



Botrytis tricepJiala, Sacc., Syll., iv. n, 698. 



Acmosporium tricephalum, Phillips, in Gard. Chron., Mar. 8, 

 1884, fig. 61. 



On fallen leaves of Cryptomeria Japonlca. 



