Trklda. 185 



Elatcrs cylindrical, 375 — 4 /x in diameter, terminating in 

 sliort, sharp, smooth ends 4 — 6 /x long. Elater spirals 4 in 

 number, spinulose with numerous irregular spines, coarse, wind- 

 ing irregularly. Adjoining spirals often united with each other 

 by interspiral branches which run either longitudinally or 

 obliquely in the direction of the spirals. 



Spores 12 — 13 /x in diameter, delicately warted when examined 

 under a high power lens. 



Shawangunk and Adirondack Mts., N. Y. 



This Trichia is conspicuous for the checkering or areolation 

 of the upper surface in the perfectly mature sporangia, showing 

 a sharp contrast between the adjoining nut brown and bright 

 yellow colours. In this respect it resembles Tr. fi-agilis, which 

 sometimes exhibits in its var. latcritia and also in one of its 

 simple forms, a dull mottling of the colour of the upper siu-face 

 of the sporangia. 



Trichia erecta, Eex, Proc. Acad. Sci. Phil., 1890, p. 193. 



Uxsicc.—EWk and Everh., N. Amer. Fung., Ser. II., n. 2496. 



Trichia Decaisneana, De Bary. 



Sporangia pyriform, brownish flesh-colour, shining, stipitate ; 

 stem red, then blackish-brown, very much plicate, equal; mass 

 of capillitium and spores yelloivish fiesh-colour ; inclosed in an 

 inner mc/nhrane connate with the outer loall of the sporangium ; 

 elaters cylindrical^ inflated near the tips and ending in smooth, 

 tapering, curved spines 3 — 6 times as long as elater, spirals 5 — 6, 

 fiexuous, spinulose^ in some cases parts of the elaters have the 

 spirals in the form of distant ridges or wrinkles ; spores delicately 

 warted, 10 — 11 /^ diameter. 



Trichia Decaisneana, De Bary, in Rost., Mon., p. 250, figs. 

 219, 220; Schroeter, p. 112; Cooke, Myx. Brit., figs. 219, 220; 

 Mass., Mon. Trich., p. 338. 



On Jungermannia. Germany. 



According to Schroeter the spores measure from 13 — 14 fx, 

 the elaters have 4 spirals, and are 4 — 5 mm. thick. As these 

 measurements differ from those given by the author of the 



