Trichia. 175 



tapered, rarely smooth, arcuate or twisted point, in length twice 

 the diameter of elater; spores globose, pale yellow, smooth, 

 16 17 n diameter. 



Trichia heterotrichia, I. B. Balfour, Grev., vol. x., p. 117; 

 Sacc., Syll., n. 1505 ; Mass, Mon. Trich., p. 5, f. 16. 



On bark. Britain (in Herb. Currey, Kew ; no locality). 



A species resembling most nearly forms of Trichia varia, 

 Pers., but the few elaters with the very varying sculpturing 

 and the larger smooth spores sufficiently separate them. (I. 

 B. B.) 



B. Spores warted. 



-Maters fusiform. 

 Trichia fragilis, Rost. (figs. 7 10). 



Sporangia varying from globose to pyriform, stipitate, solitary, 

 or fasciculate on a common stem, wall smooth, blackish or 

 purple-brown, pale brown or yellowish ; stem dark, longitudinally 

 wrinkled, equal or tapering upwards, erect or curved, often 

 twisted in the compound forms, inside of the wall often with 

 coloured organic lumps ; mass of .capillitium and spores varying 

 from dull orange-brown to primrose-yellow, separated from the 

 hollow of the stem ~by a membrane; elaters fusiform, 4 5 ju. at 

 thickest part, sometimes branched, spirals flat, rather broad, 

 not very prominent, tips smooth, tapering to a thin point, spores 

 globose, minutely warted, 11 14 /x diameter. 



a. genuina. Sporangia pyriform, solitary or fasciculate, clear 

 or black-brown, opaque ; mass of capillitium and spores varying 

 from reddish-brown to dirty ochre ; stem erect. 



/3. Lorinseriana. Sporangia pyriform, solitary or fasciculate, 

 reddish- brown, polished ; mass of capillitium and spores dirty 

 ochraceous ; stem generally curved. 



y. serotina. Sporangia clavate or pyriform, solitary or fascicu- 

 late; mass of spores and capillitium clear yellow to ochraceous; 

 stem erect or curved. 



5. lateritia. Sporangia subglobose, solitary or fasciculate, 

 almost black ; mass of capillitium and spores dark orange-brown ; 

 stem attenuated upwards. 



