130 



Proceedings of the Royal Irish Academy. 



The classification adopted is that of Engler and Prautl, as given in the 

 latest edition (1907) of theii- " Syllabus der PflanzenfamUien." In the case of 

 the Agaricaceae, however, the species are arranged in the order given in 

 Worthington G. Smith's "British Basidiomycetes " (1908). To facilitate 

 reference, the species under each genirs are arranged in alphabetical order. 

 An alphabetical index of Genera is given at the end of this paper. 



We have to acknowledge with grateful thanks considerable assistance in 

 elucidating synonyms and obscure species from Miss A. Lorrain Smith, of 

 the British Museum (Natural History), South Kensington. 



Phytomtxikax. 

 Plasmodiophora Alni Moll. L 2 



Brassicae Wor. Ireland 

 Spongospora subterranea Johiuon M i 



Ci 2 L2 U3 



Cebatioutxaceae. 

 Ceratiomyxa mucida Schroel. C i L 2 



LiCEACEAE. 



Licea flemosa Pert. L 2. 

 Tubulina fragifonnis Pen. L 2 U 2 

 Alwisia Eombarda Berk, el Br. L 3 



CLATHOPTTCinACBAE. 



Entcridium olivaceum Ehr. L 2 



Cribbahiaceae. 

 Dictydium umbilicatum Schrad. L2 



U2 

 Cribraria argillacca Pen. M 2 



aurontiaca Schrad. L 2 



rufescens Pert. L 2 



Trichiaceae. 

 Perichuena depressa Lib. L 2 



populina Fr. L 2 U 2 

 Areyria albida Pers. M 2 L 2 



flava Pert. L 2 



incarnata Pers. Mi C i L 2 U 1 2 



punicea Pert. M 2 C 1 L 2 3 

 Lycogala miniatum Pert. M i 2 C i 



L2 Ui 2 

 Trichia afflnis de Bary. L 2 



MYXOMYCETES. 



Trichia Botrytis Pers. C i 



fallax Pers. L 2 



favoginca Pers. M i 2 L 2 3 U 2 



persimilis Karst. L 2 



varia Pers. L 2 U 2 

 Hemitrichia clavata Rost. L 2 



Karstcnii List. L 2 



Serpula Rost. U i 

 Prototrichia flagellifera Rost. L 2 



Reticulabiaceae. 

 Reticularia Lycoperdon \_Bidl.'\ M2 



L2 

 Amaurochaete atra Rost. L 2 

 Dictydiaethalium plumbcuni Rost. L 2 



U2 



SlEMONrlACEAE. 



Enerthcnema elcgans Bowm. L 2 

 Lamproderma echinidatum Rost. C i 

 Comatricha laxa Rott. L 2 



obtusuta Preuss. M 2 L 2 3 U 2 



Persoonii Rost. L 2 



typhoides Rott. L 2 U 2 

 Stemonitis ferruginea ^j^r. L 2 



fuaca .ffo^^. M 2 C i L 2 TJ i 2 



splendens .So«^ Mi C i L 2 



Spuuabiaceae. 

 Spumaria alba DC. M 2 L 2 U i 2 



DlDTiriACEAE. 



Didymium difforme Buby. L 2 

 eff usum Zi'ni". L 2 



