The Genus Iris. By William Rickatson Dykes. With 

 forty-seven coloured drawings by F. H. Round, one 

 coloured plate of seeds by Miss R. M. Cardew and thirty 

 line drawings by C. W. Johnson. 



Demy Folio, pp. viii + 246. With 48 coloured plates and 30 line drawings. 



Bound in Roxburgh — dark green leather back and green cloth sides — with 



lettering in gold and gilt top. Price £6. 6s. od. net. 



Publishers' Note 



The Genus Iris is the outcome of an attempt to bring 

 together the available information on all the known species of 

 Iris. The account of each begins with the references to it in 

 botanical literature, followed by the references to the various 

 synonyms under which it appears to have been described. A 

 full description of the plant is then given, together with 

 observations on its peculiarities, on its position in the genus, 

 on its value as a garden plant and on its cultivation. These 

 descriptions and notes are based for the most part on living 

 plants, grown in the author's garden, where the majority have 

 been raised from seed. Those species that are not known in 

 cultivation have been described from herbarium specimens. 

 As far as possible the type specimens of each species in the 

 various herbarium collections have been examined and the 

 account of the distribution of each species is based on the 

 results of research in the herbaria of Kew, of the British 

 Museum, of the Botanic Gardens of Oxford, Cambridge, 

 Berlin, Paris, Vienna and St Petersburg- and of the United 

 States National Museum at Washington. The various speci- 

 mens are recorded in detail with dates and the collectors' 

 names. The most striking feature of the book is, perhaps, 

 the inclusion of the 48 life-size coloured plates, reproduced 

 from originals drawn from living plants. In the text are 

 inserted 30 line sketches of botanical details and of herbarium 

 specimens of species that are unknown in cultivation. Keys 

 are given to the division of the genus into sections and to the 

 species assigned to each ; a copious index is also appended. 



