STILBACEI. 339 



177. PACHNOCYBE, Berk. 



Stem solid, filiform below, clavatc above, dusted with the 

 minute spores. 



1. subulata, Berk. Evg. Fl. I.e. p. 333 ; Sow. t. 386. /. 5. On dead 



herbaceous plants. 



2. grisea, B. Eng. Fl. I. c. p. 334. On dead herbaceous stems. 



3. acicula, B. I. c. On dead herbaceous stems. 



4. albida, B. I. c. p. 335. On rotten wood. 



Order 18. STILBACEI. 



Receptacle subglobose, often stipitatc, clothed with mostly 

 minute, diffluent, subgelatinous spores. 



178. STILBUM, Tode. 



Stem firm, elongated. Head nearly globose. Spores mi- 

 nute or elongated, involved in gluten. 



* Stem formed of interwoven flocci, more or less villous. 



1. toraentosum, ScJirad.; Grev. t. 281, and t. Z junior. On TricJiia, etc. 



2. aurantiacura, B. {no. 223). On dead elm-branches. 



3. vaporarium, B. and Br. {no. 493). On wood, in stoves. Scarcely 



indigenous. 



4. fasciculatum, B. and Br. {no. 492). On decayed wood. 



.5. ^mtiimmn, B. and Br. {no. 494). On dung. {Helotiitm fimetariim. P.) 

 C. erythrocephalum, Ditm. I.e. t. 45. On dung. 



** Stem rigid, mostlg black. 



7. rigidum, P. {no. 32). On decayed wood. 



8. piliforme, F. {no. 33). On decayed wood. 



9. bicolor, P. On decayed wood. 



z 2 



