Arcyria. 157 



Arcyria decipiens, Racib., Myx. Crac., p. 16, f. 9 (not of 

 Berkeley). 

 Poland. 



Arcyria inermis, Racib. 



Sporangia stipitate, brick-red; stem filled with cells of various 

 sizes, the interspaces filled with capillitium threads ; capillitium 

 forming a network, threads cylindrical or a little flattened, 

 4'2 10'8 /* broad, protuberances combined into a network, meshes 

 1*6 2 u long and almost equally broad; spores 9'9 10'8 p. 

 diameter, membrane firm, reddish, distinctly verruculose. 



Arcyria inermis, Racib., Myx. Crae., p. 14, f. 7 ; Sacc., Syll., 

 vii., 1, n. 1465. 



Poland. 



Position uncertain, owing to absence of information respecting 

 the spores. 



Arcyria bonariensis, Speg. 



Sporangia minute, \ f mm. long, \ \ mm. broad, in densely 

 crowded clusters of 5 20 individuals, bright citrin-yellow ; stem 

 half as long as peridium and same colour; tubes of the 

 capillitium springing from the hollow of the stem, equal, 

 3 fj. thick, densely muricate, very pale yellowish-green ; spores 

 globose, protoplasm granular or guttulate, wall rather thick, 

 10 p. diameter. 



Arcyria bonariensis, Speg., Fung. Arg., Pug. III., n. 90 ; Sacc., 

 Syll., vii., 1, n. 1471. 



On old worked wood. Argentine Republic. 



Allied to A. nutans, but distinct. (Speg.) 



Arcyria aflmis, Rost. 



Sporangia cylindric-ovate, 1 mm. high, stem of about equal 

 length to sporangium, gregarious; mass of capillitium and spores 

 purple-ferruginous, dull orange-red; threads of capillitium 

 forming a network, lower meshes 3'6, upper 5'4 /* broad, mark- 

 ings as in C. incarnata. 



