Crateriam. 269 



scissile manner; stem thin, elongated, red, like base of spor- 

 angium; capillitium dense, nodes very large, irregularly angular, 

 filled with yellowish granules of lime, connected at various 

 points by long, very thin internodcs not containing lime, com- 

 bined at the base of the sporangium to form a short columella ; 

 spores dirty lilac, globose, smooth, 9 — 10 fx diameter. 



Uxsicc.—EWis, North Amer. Fung., exs., n. 1400 (as Craterium 

 leiicocephnlum). 



On twigs, &c. United States. 



Stem about two-thirds the length of the sporangium, 2—2-5 

 mm. high. Allied to C. leucoccjyhahim, but distinguished by 

 the elongated, narrowly cylindrical sporangium, the long, thin 

 internodes of the capillitium, and the smooth spores. 



Craterium aureum, Rest, (figs, 257 — 261). 



Sporangia elliptic-oblong, subglobose, or pyriform, stipitate, 

 wall i\nck,hvittle,riigtdose,from hright lemmi-yellow to reddish- 

 orange, upper convex portion breaking away in an irregularly 

 circumscissile manner; stem usually shorter than sporangium, 

 arange-yelloio, subequal, expanding at the base into a small 

 hypothallus; capillitium dense with numerous large, irregular 

 knots with yellow or white granules of lime, connected hy elon- 

 gated, thin, emjJty internodes; knots aggregated in the centre 

 towards the base to form a columella ; spores globose, brownish- 

 lilac, miniLtcly verruculose, 8 — 10 [jl diameter. 



Craterium aureum, Rost., Mon., p. 124; Cooke, Brit. Myx., 

 p. 20 ; Sacc, Syll., 1239. 



Craterium mutaUlc, Fr., S. M., iii., p. 154. 



On leaves, bark, twigs, moss, &c. Britain (Kcw, Carlisle, 

 Lyndhurst, Appin, N. B.) ; Sweden; Germany; Algeria; United 

 States. 



Plasmodium clear lemon-yellow. Scattered, 1-5 mm. high, 

 distinguished by the rugulose, bright yellow, rigid sporangium, 

 and the long slender internodes in the capillitium, in which 

 respect the present species approaches the genus rhysarnm. 



