342 OUTLINES Ol' BRITISH FUNGOLOUY. 



3. coralliuum, Roherge ; {no. 498). On Borrera tenella. 



4. coccineum, Fr. {no. 499). On Pertasaria communis. 



186. -iEGERITA, P. 



Receptacle obscure. Spores irregular, disposed iu short 

 moniliform threads at the apices of flexuous, branched, ra- 

 diating, compacted peduncles. 

 1. Candida, P. {no. 823, with a Jig.). On !)ranclics of willow, etc. 



Periola iomentosa is simply a condition of Fusisporium 

 Solani. There is no peridium in ^gerita. 



Order 19. DEMATIEL 



Threads free, rarely collected into stipitiform bundles, more 

 or less corticated and carbonized, as are frequently the simple 

 or septate spores.^ 



187. ARTHROBOTRYUM, Cesati. 



Common stem composed of jointed tlireads. Spores large, 

 radiating so as to form a little head, dark, septate. 



1. atrum, B. and Br. {no. 822, loith afg.). On dead nettles. 



188. DENDRYPHIUM, Cd. 



Threads free, jointed, simple below, branched above. 

 Branches and branchlets often monilioid. Spores septate, 

 acrogenous, concatenated. 

 1. comosum, Jf'alr. {no. 520). On dead stems. 



* In the more typical species, there is a distinct membrane, which shells oH" ; 

 and where this does not exist, the threads are dark and dingy, but never wliite, 

 or of pure tints. 



