lO-i THE MYXOMYCETES OF TICTOU COUNTY. — MOORE. 



in (liamcter, at the base, tapering np^vard. Calyculns witli 

 radiating ribs, tlie margin toothed, the teeth merging into the 

 net above. The nodes are flattened, elongated and confluent near 

 the ealyculus; in the upper part?, prominent, polygonal and 

 angular, the angles continued, into the connecting threads. These 

 latter arc delicate and free ends are common. The meshes df 

 the net are 8 — Hsided. Spores almost colorless by transmitted 

 light, slightly roughcnod. 5 — (!^ in diameter. 



This is with us a rather common species forming large 

 fructifications on decaying Psuga canadensis and other conifers. 

 The largest fructification which I have met with was 30 x lO*"". 



24. Cribraria dldi/diuidcs Cke and Palf. — Sporangia gre- 

 garious, spherical, small, .5""" in diameter, cernuous. Stipe 

 1™" Idug, dark. C'alycuhis well developed marked with radiat- 

 ing lines of dark plasniodic granules, the margin denticulate. 

 Tilie nodes of the net are dark brown, connected by rather broad 

 hyaline threads radiating from the angles. Free ends nimier- 

 ous. In the lower part of the net the nodes are more elongated 

 and branching. Spores almost colorless by transmitted light, 

 faintly warted, 7 — 8 ft in diameter. 



On decaying conifers of various species. ISTot rare. 



Genus, Dictydium (Scln-ad.) Eost. 

 Sporangia distinct. Peridium with narrow band-like thick- 

 enings oil the inner surface, radiating from the attachment of 

 the stipe to the top of tihe sporangium and connected by delicate 

 transverse thickenings. In the mature condition, the unthickened 

 portions disappear and the thickenings persist as a basket-like 

 structure with rectangular meshes, enclosing the spore mass. 



25. Dictydium cancellatum (Batsch.) Maobr. — Sporangia 

 closely gregarious, depressed globose, cernuous. The older 

 sporangia become umbilicatc at the top; .5""" in diameter or 

 slightly larger. Stipe .6 — 2.4"™ in length, tapering upward, at 

 the top weak, twisted and wdiite. Calyculus generally wanting. 



