The JSTyxotnycetes of the Miami I'allcy, Ohio. 19 



any free extremities, the surface minutely warted or spinulose 

 or with annular ridges. Spores globose, red, brown, yellow, 

 cinereous. 



>^i. Clatiiroidk.s, Mich. Capillitium clo.sely attached by 

 a few threads which issue from the interior of the stipe, and 

 are free from the caly cuius (except in A. pwzicea), much 

 elongated after dehiscence, weak and drooping or prostrate ; 

 the meshes open and irregular, not differing externally and 

 internalh', their threads similar throughout, the warts or 

 ridges of the surface exhibiting a spiral arrangement. 



1. Arcyria punicea, Pers. Sporangium ovoid, more or 

 less elongated ; the calyculus small, plicate-sulcate. Stipe 

 long, erect, brownish-red in color, expanded at the base into 

 a small hypothallus, Capillitium firmly attached by numer- 

 ous threads which are connate with the wall of the calyculus, 

 much elongated after dehiscence, ovoid-oblong to cylindric, 

 bright red in color, fading to red-brown or brownish-ochre ; 

 the threads uniform in thickness, about 3 mic, the surface 

 with a series of prominent half-rings, which wind around the 

 thread in a long spiral. Spores globose, even, 6-8 mic. in 

 diameter. 



Growing on old bark, wood, mosses, etc. The stipe 1-2 

 mm. in length, the capillitium elongated 2-4 mm. The com- 

 monest of the species, conspicvious by reason of its bright 

 red color. 



2. Arcyria MINOR, Schw. Sporangium ovoid-oblong; the 

 calyculus small, sulcate and ribbed, granulose. Stipe short, 

 erect, brownish-red in color, standing on a thin hypothallus. 

 Capillitium much elongated after dehiscence, oblong to cylin- 

 dric, lax and prostrate, bright red to brownish in color ; the 

 threads uniform in thickness, 2.5-3 niic, the surface with a 

 series of prominent half-rings, which wind around the thread 

 in a long spiral. Spores globose, even, 7-9 mic. in diameter. 

 See Plate I, Fig. 17. 



Growing on old wood, bark, Polyporus, etc. The stipe 

 .4-.7 mm. in length, the capillitium elongated 1.5-3 "^i^- Not 

 uncommon, but it is usually referred to A. adnata. 



3. Arcyria adnata, Batsch. Sporangium ovoid; the caly- 

 culus very small, finely ribbed and granulose. Stipe very 



