128 CRYPTOGAMI AFUNGI. 



Notwithstanding its minuteness, the hyaline tubes which 

 contain the seeds are readily discovered in this species. 



44. S. calva, capsules gregarious, small, black, hemispherical, 

 covered with black rigid hairs, which ultimately disappear except, 

 about the base PERS. Syn. 74. GREV. Fl. Edin. 364. 



Hob. On the dead stalks of the common ragwort, common 

 in early spring. 



tttttt On leaves. 



45. S. setacea, capsules immersed, minute, black, scattered, tip- 

 ped with a long setaceous black point PERS. Syn. 62. 



Hab. On the dead leaves of the sycamore and birch, in 

 winter. 



This species prefers the stalks and nerves of the leaf, but is 

 not confined to them. The bristle-like points are apt to 

 be rubbed off. 



46. S. Coryli, black ; capsules distinct, arranged in an irregular 

 circle, the orifices exserted like spines, and surrounded at their 

 base with a white fimbriated collar. SPREXG. Syst. Veg. iv. 394. 

 GREV. Crypt. Fl. t. 330. Cryptospharia gnomon 2 GREV. FL Edin. 

 360. 



Hab. On the green and vigorous leaves of the hazel, not 

 common. 



One of the neatest and most curious species in the genus. 

 The orifices point from the under side of the leaf, but the 

 base of the cells is very visible and somewhat prominent 

 on the opposite surface. 



47. S. rubens, capsules black, distinct, clustered on a red circu- 

 lar spot of the leaf, prominent, the apex obtuse and rounded. 



Hab. On the upper surface of the living leaves of the 

 roan-tree. In the wood at the Pease Bridge. July. 



The leaves are marked on both sides with bright red circular 

 spots from 2 to 4 lines in diameter, thickly studded on the 

 upper surface with prominent dot-like tubercles or cells, 

 reddish at first, but soon becoming black. I do not per- 

 ceive any orifice in the apex ; and the fungus may perhaps 

 belong to the genus Dothidea. 



