THE MYXOMYCETES OF PICTOL' COUNTY. — MOORE. 1!)7 



Family, AECYIE^i:. 



CIiarac'K rized hy the capillitiiim forming a distinct elastic 

 net attached below ti) the sporangial wall. The thickenings on 

 the threads take the foi-m of spines, warts, cogs, half ring, etc., 

 often arranged in a spiral l)ut never take the form of continuous 

 spiral bands. The family is represented in my collections by 

 four species all of the genu-; Arcyria. 



Genus, Arcyria (11:11) Pers. 



Fructifications of distinct stipitate sporangia ; the peridium 

 evanescent above, persistent below as a calycuhis. Capillitium 

 a more or less elastic net without free ends, attached below to 

 tlie interior of the stipe or to the calyculus. The threads or 

 tubules are marked with spines, cogs, half rings, etc. The stipe 

 is hollow and filled wirh spore-like cClls or vesicles. 



28. Arcyria imfans (Bull.) Grev. — Sporangia cylindrical, 

 distinct, stipitate crowded on a well developed hypothallus, 

 dusky yellow in cnlcr and about 7""" in total height. Stipe 

 generally long, .">'""' in length, and weak, filled with spore like 

 A'csicle-. Capillitium expanding to form a very loose, drooping 

 net, dusky yellow in color, onc-^half to three-fourth of a centi- 

 metre in length, Inosely attached to the calyculus, the tubules 

 are marked with chjse-set spines and cogs arranged in an open 

 Sjjiral, anil in addition to lhose vheir surface fretpiently shew 

 famt I'eticnlatinns. ( 'alycnlus s])iiinlose within. Spores pale 

 b}' transmitted light, very slightly roughened, 7 — lO/x in 

 diameter. 



A common species occurring on locaying wood of various 

 conifers. 



i".». Arcyria irinijiiala . Persoon. — Syiorangia clo^tdy crowded, 

 cylindrical, srijiivatc. 1 — 1. ,")""" in total height. Sti]ie 

 short, al)ont .::!.")'"'" long, or reduced to a mere ])oint ben"ath 

 the calycnlus. dark colored, furrowed and filled with spore- 

 like cell~. {'alyculus ])licate to the margin and si)inulose. 



