Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 323 



mity. In germination, the lower articulation sends out a filament 

 either laterally or from the extremity. 



Plate X. fig. 10. a. Ascus with paraphysis ; b. sporidia in various 

 stages of growth ; c. ejected sporidia germinating. All more or less mag- 

 nified. 



6.28. S. (Obtectse) aucta, n. s. Sparsa tecta ; peritheciis glo- 

 bosis collapsis subtiliter tomentosis ; collo obliquo deorsum con- 

 stricto cum ostiolo breviter fusiformi; ascis amplis; sporidiis 

 oblongo-ellipticis utrinque appendiculatis uni-3-septatis. On 

 dead twigs of birch and alder, Spye Park, Wilts. 



Scattered, scarcely visible externally except from the swelling 

 of the bark above the perithecia. Perithecia globose, obscurely 

 tomentose, soon collapsed ; neck oblique, constricted below, con- 

 fluent with the shortly spindle-shaped ostiolum. Asci broad, 

 delicate ; sporidia elliptic, with a truncate process at either extre- 

 mity ; at first uniseptate, with an endochrome of the same form 

 as the cells ; this eventually is divided into two nuclei, between 

 which a new septum is formed, so that the sporidia have either 

 one or three septa, in which latter case there is a constriction at 

 each articulation. 



Plate X. fig. 11. a. Ascus; b. sporidia. More or less magnified. 



629. S. (Obtecta?) bufonia, n. s. Sparsa ; peritheciis globoso- 

 depressiusculis, ostiolo brevi corticem perforante; ascis cylin- 

 dricis ; sporidiis uniserialibus oblongis uuiseptatis muco involutis. 

 On small dead branches of oak, Easton, Northamptonshire. 



Scattered over the branches, which are rough with the little 

 penetrating ostiola. Perithecia globose, slightly depressed ; os- 

 tiolum central, papillseform, with scarcely any neck. Asci cylin- 

 drical, containing a single row of oblong uniseptate sporidia 

 which have a thick gelatinous coat which ultimately vanishes. 

 The strings of sporidia remind one somewhat of toad spawn. 



Plate X. fig. 13. a. Ascus ; b. spores contained in inner membrane 

 of ascus ; c. spores which have lost their gelatinous coat. More or less 

 magnified. 



630. S. (Obtectse) dochmia, n. s. Sparsa tecta ; peritheciis soli- 

 tariis ovatis obliquis demum collapsis ; collo brevissimo constricto 

 ostiolo explanato. On dead twigs of elm, Batheaston, Jan. 1851. 



Scattered over the twigs, but visible externally, merely from 

 the swellings caused by the perithecia. Perithecia somewhat 

 ovate, oblique, collapsed when dry; neck extremely short and 

 somewhat constricted ; ostiolum broad, obtuse, perforated in the 

 centre. Asci cylindrico-clavate, obtuse ; sporidia oblong, very 

 obtuse, slightly curved, at length uniseptate, hyaline, arranged 

 in two r<> 



