140 Cincinnati Society of Naturat History. 



of large, irregular, roundish or polygonal meshes. Spores 

 globose, very minutely warted, brown, 7-9 mic. in diameter. 

 See Plate XI, Fig. 33. 



Growing on old wood. Sporangium with the stipe 15-25 

 mm. in height, the stipe 4-6 mm. in length, the sporangium 

 about .4 mm. in thickness ; the meshes of the superficial net- 

 work of the capillitium 25-50-80 mic. or sometimes as much 

 as 100 mic. in extent. This is Stevwnitis Mori^ani, Peck. 



V. ENERTHENEMA, Bowm. Sporangium regular, glo- 

 bose, stipitate; the w^all thin and fragile, fugacious. Stipe 

 stout, thick, tapering upward, entering the sporangium and 

 prolonged to its apex, there expanding into a discoid mem- 

 brane. Capillitium originating from the lower surface of the 

 apical disk of the columella ; the threads branched a few 

 times and hanging downward, their extremities free. Spores 

 globose, violaceous. 



A well-marked genus, by reason of the peculiar origin of 

 the capillitium. 



I. Enkrthenema PAPiix.\TUM, Pers. Sporangium globose, 

 stipitate ; the wall brown or blackish, soon disappearing. 

 Stipe black, rugulose, thick below, tapering above into the 

 slender columella, which, at its apex, expands into a thin 

 membranaceous disk. Capillitium of long brown threads 

 suspended from the apical disk, the threads branched a few 

 times, occasionally anastomosing by a short, transverse 

 ])ranchlet, the free ends often forked. Spores globose, very 

 minutely warted, violaceous, 10-12 mic. in diameter. See 

 Plate XI, Fig. 35. 



Growing on old wood. Stipe and columella .8-1.2 mm. in 

 height. The species seems to be rare in this country, as I 

 have met with it but once myself, and have received only a 

 few specimens from elsewhere. 



VI. DIACH.l'vA, Vx. wSporangia globose to t)bU)ng, stipitate, 

 arising from a common hypothallus; the wall thin, rugulose, 

 iridescent with metallic tints, breaking up irregularly and 



