191 



GENUS 180. Ceratium* A. & S. 



Receptacle branched, cylindrical, membranous, reticulated, 

 subgelatinous, clothed with short, fertile tlocci, one in the centre 

 of each reticulation. 

 1. — Ceratium hydnoides A & S, Batheaston, April. 



GENUS 181. PACHNOCYBE t Berk. 



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

 minute spores. 

 1. — Pachnocybe ferruginea Berk Eng. Flo. Vol. v. 331:, on old 



boards, Batheaston. There are four British species recorded 



in Cooke's H. B. 



ORDER 18. STILBACEI. 



Recejitacle subglobose, often stipitate, clothed with mostly 

 minute, diffluent, subgelatinous spores. 



GENUS 182. STILBUM.J Tode. 



Stem firm, elongated. Head nearly globose. Spores minute 



or elongated, involved in gluten. 



1. — Stilbum tomentosum Schr. mid D. St. Catherine's, Bath- 

 easton. 



2. — S aurantiacum Berk. Elmhurst, Batheaston, on Elm. 



3. — S fimetarium B. and Br. Batheaston, on dung. Ann. 



Nat. Hist., ii. v. 465. 



4. — S erythroceplialum Ditm. Batheaston, on wood. 



5. — S rigidum P. Bathford, on wood. 



6. — S turbiuatum Tode. Batliiiaston, on wood. 



7. — S bicolor P. Langridge, on wood, March. 



8. — S cuneiferum B. and Br. Ann. Nat. Hist., January, 



1875, No. 1451, Batheaston, on rotten cabbage stalks, cum 

 icone. 



* From keras a horn. 



t From pachnc hoar frost, and kube a head. 



X From stilbos shining. 



