IMPERFECT CAPSULAR FUNGI— SPHAEROPSIDEAE 265 



adnate subiculum as in Asteroma, but with different sporules. 

 Darluca has no subiculum, but the perithecia are parasitic on 

 old Uredines, and in Diplodina the species grow on branches 

 the perithecia, and even the sporules, resembling Biplodia, save 

 that they are uncoloured. In Cystotricha the perithecia 

 dehisce as in Hysterium, with a gaping fissure, and the sporo- 

 phores are septate and constricted, so as to possess a moniliform 

 appearance. In the only remaining genus, Ehynchophoma, 

 the perithecia resemble Phoma externally, except that they 

 are rostellate and the sporules are uniseptate. 



The succeeding section, Phragmosporae, has the sporules 

 multiseptate, and is represented in two divisions, in one of 

 which the sporules are brown, and in the other hyaline. The 

 former is the most numerous in genera and species. The old 

 genus Hendersonia, as interpreted by Berkeley, has been 

 divided, and is now restricted to such species as possess 

 coloured sporules. The perithecia are papillate, covered by 

 the cuticle. In Couturea the species have superficial perithecia, 

 which are seated on a stellate subiculum, somewhat after the 

 manner of Asteroma. In the two small genera Angiopoma 

 and Lichenopsis the perithecia dehisce by an operculum at the 

 apex. In the former the perithecia are superficial and hairy ; 

 in the latter immersed and smooth. Cryptostietis somewhat 

 resembles Pestalozzia in the septate sporules being furnished 

 at both extremities with a hyaline bristle, whereas in Pesta- 

 lozzia the cilia are more than one, and confined to the apex of 

 the sporule. In another small genus, that of Prosthemium, 

 the sporules are also peculiar, in being joined together at the 

 base in a stellate manner (Fig. 122). The compound species 

 are confined to a single genus, in which the perithecia are 

 immersed in a stroma, as in Dothideaceae. This genus is 

 Hendersonula, and is, in fact, a compound Hendersonia. 



The Hyalophragmiae, in which the sporules are colourless, 

 includes but two genera : Stagonospora, which is practically 

 Hendersonia with hyaline sporules ; and Mastomyces, in which 

 the perithecia are elongated and superficial, resembling scattered 

 perithecia of the rather obscure genus Gorynelia, which is 

 ascigerous. 



The Bictyosporae, in which the sporules are coloured and 



