ARCYUIA.] 
ARCYRIACEiE. 
193 
Hah. On rotten wood.— Near Cracow, Poland. 
This description applies to A. ferruginea. 
14. A. Raciborskii Berl., in Sacc. Syll., vii., p. 430. Sporangia 
stipitate, stalks filled with vesicles ; cup hemispherical, the wall 
thin, reddish, densely and minutely warted on the inner side ; 
capillitium forming a loose net, with globose swellings at the 
nodes and also in the internodes; threads in the lower part 
flattened, with one margin dentate, elsewhere smooth ; threads 
in the upper part subcylindrical, with the teeth arranged in a 
spiral, the remainder of the thread marked with undulating 
ridges, forming one to four spirals; becoming in some parts 
indistinct, or branching to form an irregular reticulation ; spores 
minutely warted, 10"5 to ITG /a diam. — A. decipiens E-ac, I.e., 
p. 84 (non Berk.). 
Hob. Near Cracow, Poland. 
This description applies well to some forms of A. ferruginea. 
15. A. bonariensis Speg., Ann. Soc. Cient. Argent., x., p. 151 
(1880). Sporangia minute, 0-5 to 0-75 mm. high, 0-25 to 0-3 
mm. broad, densely crowded in groups of 5 to 20, citron-yellow ; 
the stalks half the height of the sporangium, concolorous ; 
capillitium threads arising from the tube of the stalk, cylindrical, 
3 diam., densely muricate, clear yellow-green; spores globose, 
granular, 10 /x, diam. 
Hah. On an old beam, Bonaria, Argentina. Allied to A, nutans, 
but quite distinct. 
16. A. cinnamomea Hazslinszky, in Oester, Bot. Zeitschr., 
xxvii., p. 84 (1877). Sporangia cinnamon-red, gregarious, at 
length scattered, cyHndrical ; stalks of equal length, transparent, 
colourless; capillitium threads forming a network with hexagonal 
meshes, 3 to 4 /x, diam., beset with small, shortly cylindrical warts; 
spores cinnamon-red. 
Hah. On wiUow, Hungary. 
This description applies to A. ferruginea. 
17. A. aurantiaca Raunk., in Bot. Tidssk. (1888), p. 61, tab. 3, 
figs. 4, 9, 10, 11. Sporangia gregarious, ovate or shortly cylindri- 
cal, stipitate ; stalk the same length as the spoi-angium, or shorter ; 
thickenings on the inner side of the receptacle in the form of fine 
warts ; wall, capillitium and spore mass orange- or brick-red • 
tubes of the capillitium with irregularly connected close-standin<^ 
ring-like thickenings, 5 to 7 /a broad; spores smooth, 10 to 11 
/X diam. 
Hah. On rotten wood. — Denmark. 
The above description and figures clearly refer to A. ferruginea. 
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