DEPARTMENT OF BOTANY. 169 



several genera of Orchids, and the section Pothoidese of the 

 order Aracese. 



In the Gymnosperms various collections have been incor- 

 porated, and work of revision has been done on the genera 

 P^Viddringtonia, Callitris, and others. 



Some time has been devoted to sorting and selecting, 

 preparatory to incorporation, an accumulation of collections, 

 chiefly Australian ; and to the arrangement of Chinese and 

 South African duplicates for purposes of exchange. 



Ferns. — The plants of several collections have been laid 

 out and incorporated in the general series, including collec- 

 tions from West China (Wilson), Paraguay (Hassler), Central 

 America and West Indies (various), and Wirtgen's critically 

 named forms of Equisetacese. Outstanding material of 

 various genera of the Gleicheniacese, Cyathese, Dicksoniese, 

 Hymenophyllese, and of Pteris and Selaginella has been 

 incorporated. The genera Anemia and Asplenium (in part) 

 have been revised and re-arranged. 



Bryophyta. — In the Mosses the genus Ptychomitrium and 

 some of the genera of Hookeriese, Entodontese, and Bryese 

 have been partly revised. In the Hepatics most of the 

 British genera have been revised and the collections of Davies 

 and Pearson arranged according to Pearson's Monograph. 



Algce. — The Codiacese and the genera Oelidium, Ptero- 

 cladia, and Chondrus have been revised and re-arranged, as 

 have also in part the genera Dictyota, Padina, Laminaria, 

 Macrocystis, Sarcophycus, and others. The Chlorophycese of 

 Ferguson's Ceylon Algse have been revised and re-arranged. 

 The original drawings and plates of Sowerby's English 

 Botany have been re-arranged. The prepared diatomaceous 

 deposits of the Comber collection have been put in order and 

 the MSS. arranged and collated with the microscopic slides. 

 The general series of microscopic slides has been examined 

 and repaired where necessary. Collections from New South 

 Wales and from the Indian Ocean have been determined, and 

 several collections of British seaweeds have been named, The 

 outstanding material of the Characese has been in part 

 determined. 



Fungi. — The large collection of the late William Phillips 

 has been purchased, and all the British specimens belonging 

 to the Basidiomycetes, Uredineae, Pyrenomycetes, Sphserop- 

 sidese, Hyphomycetes, and Phycomycetes have been separated 

 and incorporated in the British series. The North American 

 Uredinese of the published sets of Ellis and Everhart, Arthur 

 and Holway, Cummings, Williams and Seymour, Griffiths, 

 Kellerman and Swingle, Seymour and Earle, have been incor- 

 porated in the general series. The British Uredinese have 

 been further revised, re-arranged, and supplemented. 



