Arcyria. 163 



Arcyria stipitata, Mass. 



Sporangia pyriform, from 2 5 on a common stem, or solitary, 

 pale lemon-yellow, opaque ; stem elongated, equal, dark brown 

 black, longitudinally rugulose; mass of capillitium and spores 

 dingy ochre ; capillitium dense, much branched and forming a 

 net without free tips, threads 4 5 /x thick, spirals very open, 

 rather distant, thin, not prominent; spores globose, minutely 

 warted, 7 8 p. diameter. 



a. genuina. Sporangia single on an elongated stem. 



ft. fasciculata. Sporangia fasciculate on a common stem. 



Hemiarcyria stipitata, Mass., Rev. Trich., p. 354, fig. 32. 



On palm stems. Java. 



(Type in Herb. Berk., Kew.) 



Scattered or aggregated, 3 4 mm. high, stem about 2 mm. 

 long, thin, hollow. Capillitium elastic, protruding after dehis- 

 cence. Allied to Arcyria clavata, but distinct in the dense 

 capillitium without free tips, the loose spirals, and the long> 

 thin, black stem. 



Arcyria Wigandii, Mass. 



Sporangia clavate, discoid, or irregularly subrotund, very 

 small, almost sessile, mass of spores and capillitium bay or 

 jlesh-colcur, verging on yellow ; elaters rarely branching, spirals 

 one or two, Jlexuous, either separated by interspaces from three to 

 four times their own width, or crowded and almost forming rings, 

 tips scarcely narrowed, truncate and inflated ; spores minutely 

 verrucidose, 10 11 /x diameter. 



Hemiarcyria Wigandii, Host., Mon., p. 267, fig. 232; Sacc., 

 Syll., vii, 1, no. 1517; Cooke, Myx. Brit., fig. 232; Mass., Rev. 

 Trich., p. 356. 



Germany. 



(Rostafinski's Synonym.) 

 Trichia abietina, Wigd., 1. c., p. 33, t. 2, f. 11 (1863). 



