142 Cincitinati Society of Natural History. 



7. Crihraria cuprea, Morg. n. sp. vSporangium very 

 small, oval or somewhat obovoid, stipitate, cernuous : the 

 calyculus copper-colored, finely ribbed and granulose within, 

 occupying from one-third to one-half the sporangium ; the 

 network of slender threads, with rather large triangular or 

 quadrilateral meshes, and with large irregular dark copper- 

 colored nodules, each having several (4-7) radiating threads, 

 with an occasional free extremity. vStipe not very long, 

 tapering upward, curved at the apex, of the same color as the 

 sporangium or darker below. Spores pale coppery in mass, 

 globose, even, 6-7 mic. in diameter. See Plate III, Fig. 11. 



Growing on old wood. Sporangium .30-.35 X .25-. 30 

 mm., the stipe two to four times as long as the sporangium. 

 A minute species, easily recognized by its almost uniform 

 color of bright new copper. 



IV. DICTYDIUM, vSchrad. Sporangium simple, depressed- 

 globose, .stipitate, cernuous; the wall regularly thickened on 

 the inner surface by numerous convergent ribs, which extend 

 from base to apex and are united by fine transverse fibers, 

 thus forming a network of rectangular meshes ; the basal 

 portion of the membrane sometimes persists as a calyculus, 

 the upper part disappears at maturity. Spores globose, pur- 

 plish. 



The ribs run from base to apex like the meridians on a 

 globe ; they are simple, or here and there they separate into 

 two divergent branches, which sometimes again converge into 

 one ; at the apex of the sporangium there is usually a small 

 irregular net in which all the ribs terminate. 



I. DiCTVDiUM CERNUUM, Pers. Sporangium depressed- 

 globose, umbilicate at the apex, stipitate, cernuous, purplish- 

 l^rown in color; the calyculus granulose within, occupying 

 from one-fourth to one-third of the sporangium, the ribs 

 united by firm, persistent fibers. Stipe not very long, erect, 

 tapering upward, bent at the apex, purplish-brown, the apex 

 pale and pellucid, standing on a small hypothallus. Spores 

 purplish-brown in mass, globose, even, 5-7 mic. in diameter. 



Growing on old wood. Sporangium .4-. 5 mm. in diameter, 

 the stipe two or three times longer than the diameter of the 



