Arryria. 157 



Arcyria decvpiens, Racib., Myx. Crac, p. 16, f. D (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 ix hrosid, protuherances comhincd into a nettvorh, meshes 

 1"6 — 2 u long and almost equally broad ; spores 9"9 — 10'8 \x. 

 diameter, membrane firm, reddish, distinctly vemiculose. 



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

 vii., 1, n. 1465. 



Poland. 



Position uncertain, o^uing to absence of information ixspecting 

 the spores. 



Arcyria bonariensis, Speg. 



Sporangia minute, | — f mm. long, J — \ mm. broad, in densely 

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

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

 capillitium springing from the hollow of the stem, equal, 

 3 ju, thick, densely micricate, very pale yellowish-green ; spores 

 globose, protoplasm granular or guttulate, wall rather thick, 

 10 // 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. mitans, but distinct. (Speg.) 



Arcyria affinis, Rost. 



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

 length to sporangium, gregarious; mass of capillitium and sjjores 

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

 forming a network, lower meshes o'6, upper 5"4 fx broad, mark- 

 ino-s as in C. incarnaia. 



