348 OUTLINES OF BlUTISII FUNGOLOGV. 



4. roscus, Lk. On damp paper, carpets, etc. 



5. mollis, B. ; Eng. Fl. I. c. j). 340. On dead leaves. 



6. virens, Lk. On Agarics. 



208. NEMATOGONUM, Desm. 



Threads clavatc at tlie apices, and bearing necklaces of 

 spores on distinct scattered spicules. 



1. anrantiacum, Desm. {no. 237, with a fig.). On bark, etc. 



2. aureum, B. Aspergillus aureus, B. in Eng. Fl. On bark. 



209. RHINOTRICHUM, Cd. 



Threads erect, articulate, clavate above, and bearing spores 

 attached to spicules. 



1. Bloxami, B. and Br. {no. 541, with a fig.). On dead wood. 



2. Thwaitesii, B. and Br. {no. 542, with a fig.). On the naked ground. 



3. Opuntia, B. and Br. {no. 761, icith a fig.). 



210. BOTRYTIS, Mich. 



Threads septate, irregularly or dichotomously branched, 

 hyaline or coloured. Spores terminal. 



1. Tilletii, Besm. {no. 529). On leaves, naked soil, etc. 



2. citrina, B. (no. 27, with a fig.). On dead twigs. 



3. Jonesii, B. and Br. {no. 760, with a fig.). On dung. 



4. terrestris, P. {no. 240) ; Grev. I. 257. On the naked ground. 



211. PERONOSPORA, Cd.,* Ca.y). 

 Parasitic threads mostly inarticulate. Spores of two kinds : 



* Since the discovery of the second form of fruit, of which Corda know 

 nothing, it is expedient to adopt liis generic name, wliicli I do with reluctance, 

 as P. parasitica seems more entitled to the name of Botri/tis than other allies, 

 after Polyaclis is removed. Corda' s Peronospora, moreover, included only 

 such species as have nou-se])tate tln-eads. 



