192 
ENDOSPOREiE. 
[arcyeia. 
gatherings of any other species of Arcyria; the cup of the sporangium- 
Avall is indeed smooth or nearly so, but the persistent plates which are 
conspicuous in the var. rosea are papillose and similar to those in the 
Lyme Regis and Strassburg specimens of A. (Erstedtii from which we 
are unable to detect a^epecific difference. 
Hab. On dead wood— Lyme Regis, Dorset (L:B.M.161) ; Sutton, 
Warwick (L:B.M.1G1); Germany (Strassb. Herb.); Denmark (K. 893); 
Norway (L:B.M.161) ; N. S. Wales (K. 154) ; Philadelphia (L:B.M.161). 
SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 
10. A. affinis Rest., Men., p. 276 (1875). Sporangia cylindric- 
ovoid, 1 mm. high, stalks 1 mm. high, crowded on the substratum; 
mass of spores and capillitium purple-red, or yellowish -red ; net 
of capillitium free from the cup, consisting of cylindrical threads 
3'6 fji diam. in the lower part, 5'4 ^ diam. in the upper part; 
thickenings as in A. incarnata. 
Hah. On tree trunks. — Sweden. 
This description applies to the bright-coloured forms of A. incaiimta. 
11. A. similis Racib., in Rozpr. Mat. Przyr. Ak, Krak., xii., p. 81 
(1884). Sporangia shortly stipitate, cherry-coloured. Capillitium 
free from the cnp, consisting of thick-waUed, cylindrical or slightly 
compressed threads 4'2 to 5"8 /a diam., marked everywhere with 
warts and raised bands : bands usually half-ringshaped, arranged 
not in spirals as in ^. adnata, but quite irregularly, or with a few 
placed one over the other as in A. ferruginea, or in broken, 
irregular spirals ; spores 7*5 to 8'3 /a diam., almost colourless, 
thin-walled, distinctly verruculose. 
nah. Near Cracow, Poland. 
This description suggests a form of A. incarnata, in which species 
the markings on the capillitium are subject to great variation in shape 
and arrangement. 
12. A. irregularis Racib., I.e., p. 83 (1884). Sporangia flesh- 
coloured, stipitate; stalks 0-5 mm. high, filled with colourless 
vesicles ; cup hemispherical, the wall verruculose ; capillitium 
forming an irregular network of flattened threads with undulate 
margins, 4'5 to 9-1 ju. wide, 2-5 to 4-5 fx thick, densely beset 
throughout with irregular conical prominences, 0-8 to 1'5 broad, 
and iTsually elongated; spores 7 to 7-5 fx. diam., with a firm, 
almost colourless wall. 
Hah. On dead chestnut. — Near Cracow, Poland. 
This description suggests also a form of A. incarnata, 
13. A. inermis Racib., I.e., p. 82 (1884). Sporangia stalked, 
brick-red; the stalk filled with vesicles and capillitium threads; 
net of capillitium consisting of cylindrico-complanate threads, 
4-2 to 10-8 /X wide, marked with thickenings forming a reticulation 
with meshes 1*6 to 2 /x long, and almost equally broad. Spores 
9-9 to 10-8 jx diam., the wall firm, reddish, distinctly warted. 
