182 ENDOSPORE.E. [CORNUVIA. 



differs in the inner sporangium-wall being furnished with de- 

 pressed thickened lines, and breaking up, when mature, into 

 quadrangular or pentagonal fragments. 



ffab. On dried roots of Roblma. Poland. 



This species is referred to in Hedwigia, 1887, p. 110, by Kaciborski, 

 as being indistinguishable in the description from C. circumscissa ; the 

 structure of the sporangium-wall suggests rather Perichcena populina 

 or P. depressa. 



3. C. anomala Karst., in Bidr. Kann. Finl. Nat. (1879), 

 iv., p. 131. Sporangia scattered or gregarious, sessile, sub- 

 globose, dirty ochraceous, shining, 1-5 mm. diam. Tubes of the 

 capillitium 4 to 6 JJL diam., cylindrical, with numerous truncate, 

 often clavate, free ends, provided with close-set, ring-shaped 

 thickenings. Spores globose, smooth, dull ochre, or pale yellow, 

 6 to 7 /x, diam. Trichia anomala Karst., in Not. Sallsk. Faun. 

 Flor. Fenn., ix., p. 354 (1868). 



Hob. On bark and wood of pine. Finland. 



The numerous free ends and ring-shaped thickenings of the elaters 

 and the smooth spores suggest that this is an irregular form of 

 Trichia scabra. 



4. C. leocarpoides Speg., in Ann. Soc. Cient. Argent., xii., 

 p. 256 (1881). Sporangia subglobose or pyiiform, O6 to 0'8 mm. 

 diam., yellowish-red or fulvous, not or scarcely shining, smooth ; 

 the wall rather thick, subcartilagiiious, soon evanescent above, 

 often forming a persistent cup below. Stalk rigid, erect, brown 

 or blackish, slender, smooth or subrugulose, hardly exceeding the 

 diameter of the sporangium. Capillitium elastically protruding, 

 adnate at the base, long persistent, tobacco-coloured or fulvous- 

 olive ; threads slender, 5 to 6 //, thick, forming a dense net with 

 many terete, rounded-truncate free ends; spiral bands three or 

 four, smooth, not papillose. Spores globose, smooth, filled with 

 granules, fulvous-olivaceous, 8 to 10 //, diam. 



ffab. On rotten wood. Apiahy, Brazil. 



This description applies well to a form of Hemitrichia clavata with 

 many free ends to the capillitium. 



SPECIES EXCLUDED FROM THE GENUS. 



C. circumscissa Host. = Perichcena chrysosperma List. 

 C. depressa List. = Dianema depressa List. 

 C. metallica Host. = Margarita metaUica List. 

 C. Wrightii Eost. = Perichcena chrysosperma List. 



Order II. ARCYRIACE.E. Sporangia simple, stalked or sessile ; 

 capillitium combined into an elastic network, with thickenings 

 in the form of half -rings, cogs, spines, or warts. 



