MUCEDIXES. 603 



In some features this mucli resembles P. olivaceum, Corda, but Jiflfors in 

 the spores being oblong instead of globose, and in the ramifications of the 

 flocci. It iorms more or less orbicular patches of from g- to f in. in diameter, 

 often springing from the same spots, and apparently the same mycelium as 

 Sporidesmium altemarice. (See no. 1440.) {Fig- 270.) 



1808. Penicillium subtile. Berk. " Minute Penicillium." 



Very minute, snow-Tvliite ; hypTiasma creeping, very delicate ; 

 fertile flocci erect, simple, or ternate ; chains of broadly elliptic 

 spores scanty. — Berk. Ann.N.H. no. 241, 1. 14,/. 25. 



Inside a decayed willow. Spring. Tansor, Norths. 



Extremely minute and delicate, presenting to the naked eye nothing more 

 than a white mealy bloom. Fertile threads mostly simple, but sometimes 

 ternate, giving off a few chains of rather large, broadly elliptic spores, each 

 furnished at either end with a little apiculus. — M.J.B. 



Gen. 236. OIDIUM, Link. 



Flocci very short, producing a moniliform 

 string of spores by tomiparous division. — 

 Berk. Outl.p. 350. {Fig. 271.) 



Oidium chaztazum. Zk. " Paper Oidium," 



Flocci decumbent, somewhat branched, black ; articulations 

 oval. — Lmk. Sp. 1, J). 124:. Bej^k. Ann.N.H. no. ISO. 



On damp paper. King's Cliffe. 



This is probably a condition of some higher form of paper mould. 



1810. Oidium aureum. Lk. " Golden Oidium." 



Tufts dense, at first villous, white, at length golden yellow ; 

 fertile flocci breaking up into oval joints. — Berk. Eng. Fl. v. p. 

 348. Nees. f. 44. Torula anrea, Corda. Ic. t. 8,f. 56. Mucor quer- 

 neus, Sow. t. 378,/. 12. 



On rotten wood. [Mid. Carolina.] 



The colour of " golden chrome." 



1811. Oidium fulvum. Zk. " Tawny Oidium." 



Tufts dense, at first white and villous, at length tawny ; fer- 

 tile flocci breaking up into oblong-lanceolate joints. — Berk.Eng. 

 Fl.Y.p.34:S. Torulafulva,Corda.Ic.t.8,f. 37 . Berk.exs.no.2db. 



On very rotten wood. 



*' Joints oblongo-lanceolate, the lanceolate form arising from a little trun- 

 cate sub-cylindric apiculus."— ii"./.^. (Fig* 271 J 



