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Cincinnati Society of Natural History. 



3. Lkocarpus BRUNNKOiyUS Phillips. Sporangium large, 

 globose or somewhat depressed, sessile; the wall a thick 

 yellow-brown membrane, the outer surface naked, smooth, 

 and polished, with a dense white inner layer of granules of 

 lime, dehiscing in a stellate manner, the segments becoming 

 reflexed. Capillitium of tubules forming a dense net-work, 

 with wide expansions at the angles; the nodules of lime very 

 large, numerous, white, angular and irregular. Spores 

 globose, minutely warted, dark violaceous, 8-10 mic. in 

 diameter. 



Growing on bark of oak, California (Hark?iess.) Sporangium 

 nearly 1 mm. in diameter. Diderma brunneolum Phillips. I 

 have taken the description from Massee's monograph. 



4. IyKOCARPUS FRAGiivis Dicks. Sporangium very large, 

 obovoid-oblong, stipitate or subsessile ; the wall a greatly 

 thickened membrane, polished and shining within and with- 

 out, from alutaceous or pale umber to dark-brown in color, 

 destitute of lime. Stipe short, weak, and slender, arising 

 from a thin hypothallus. Capillitium of slender tubules 

 forming a loose network of large irregular meshes, with 

 slight expansions at the angles ; the lime white, variable in 

 amount, sometimes quite scanty, then again filling large por- 

 tions of the net-work with long-branched and reticulate 

 masses. Spores subglobose, dark violaceous, opaque, 12-15 

 mic. in diameter. 



Growing gregariously on old wood, leaves, mosses, etc. 

 Sporangium 1.5-2 mm. in length by 1 mm. in thickness, the 

 stipe variable in length, but usually much shorter than the 

 sporangium. Diderma vernicosum Pers. 



IV. PHYSARElylvA Peck. Sporangium oblong, stipitate ; 

 the apex re-entrant and confluent with the hollow columella ; 

 the wall a thin membrane covered with small scales and 

 minute granules of lime, at maturity torn away at the apex 

 and stellately splitting into a few segments. Stipe elongated, 

 tapering upward, entering the sporangium and prolonged to 

 the apex as a tubaeform columella. Capillitium distinguished 

 by two distinct sets of tubules ; the first consisting of long, 

 thick tubules filled with lime, rising at regular intervals from 



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