198 THE MVXOMYCETES OF PICTOU COUNTY. — MOORE. 



Capillitiiiiii ;i loose net of pink or rose-eolorcd threads, 3 — 3.5 

 Avide, attacli(>d bv a few strands wliieli run to the centre of the- 

 stipe. The strands or tnbules are marked with rather distant 

 cogs and lialt' riiius arraniicd in an npon spiral. Perforated 

 pJate-like expansions are found here and there at the nodes,, 

 more particularly in tlio l(»w(>r jiortion of the net. Free ends 

 are occasionally t'lnuid Imt arc rar(\ Spores colorless by trans- 

 mitted liolit. almost smooth or slightly roughened and with a 

 few scattered warts, 7 — 8/x in diameter. 



A common species found on decaying Fopulus^ Ireiiuilotdes^ 

 Fagus jernighiea and Ahies balsamea. 



30. Arcyvia deinuhtta (Linn.) Sheldon. — Sporangia gre- 

 garious, cylindrical stipitate; total height with expanded 

 capillitium 3 — 4"'"\ Stipe about l'""\ filled with spore-like 

 cells 12 — l-i/A in diameter. Calyculus plicate, smooth; capilli- 

 tium, a not of rosy threads fading to dusky yellow, 3 — 4/>t ;vide 

 and adorncil with distant cogs and half rings arranged in the 

 form of an open spiral. Xear the calycukis the threads are 

 aimost smooth. The capillitium is attached to the calyculus at 

 many points an:l hence is not deciduous. Spores colorless by 

 transmitted light, smooth, about 7/>i in diameter. 



Found on decaying conifers; not rare. 



31. Arcyvia cinerea (Bull.) Pers. — Sporangia gregarious, 

 cylindrical or somewhat broader at the base, stipitate, ash 

 colored. Stipe variable in length, in some gatherings .75"*'" 

 long, in others, the sporangia are almost sessile. Total height 

 of sporangia with expanded capillitium, 2 — 2.5™". Stipe dark, 

 of almost uniform thickness, hollow, filled with s])ore-like cells. 

 Calyculus plicate at the base. Capillitium a close net attached 

 at many points to the calyculus. The peripheral portions of the 

 net consist of threads or tubules 3 — 3.5//. wide adorned with 

 close-set spines and presenting many plate-like expansions at the 

 nodes and elsewhere. The interior portions of the net and also 

 the part near the calyculus consist of tubules somewhat wider 



