REVIEWS AND NOTICES OF BOOKS. 63 



insignis, had been adopted instead of D. Don's Finus radiata, as 

 the former is in familiar use in many countries where that 

 accommodating tree has been extensively planted. 



The list of synonyms of each species is commendably short, 

 but includes all those in occasional use. 



The authors, after careful examination of all the living and 

 dried material available, have deemed it necessary to reduce 

 substantially the number of new species from China. Though 

 thirty-eight spruces have been previously described, of which 

 eighteen were from Central and Western China, they only 

 describe twenty-seven in all : moreover, they tell us that when 

 the cultivated plants have reached the fruiting stage, it may be 

 found that the number previously included as distinct species 

 may well require to be diminished further. Picea aspei-ata of 

 Masters is considered by them to include P. montigena and P. 

 retroflexa of that authority; they further indicate that they 

 anticipate that this widely spread Western Chinese species with 

 quadrangular leaves may be found to embrace P. aurantiaca 

 and P. Neoveitchii of Masters as well as P. gemmata, P. hetero- 

 kpis and P. Meyeri of Rehder and Wilson ; Picea brachvtyla of 

 Pritzel they regard as including P. ascendens of Patschke, P. 

 complanata of Masters, P. pachydada of Patschke, and P. Sa?-- 

 gentiafia of Rehder and Wilson ; Picea likia?igensis of Pritzel as 

 including Picea Balfoiiriana of Rehder and Wilson, and Picea 

 purpurea of Masters : Picea Wilsoni of Masters as including 

 P. Watsoniana of Masters. 



Time alone can establish how many of these may turn out to 

 be true species as distinct from mere geographical forms. The 

 writer for obvious reasons — in one case at any rate — may be 

 forgiven the hope that the species will not ultimately be so 

 reduced ! 



The book includes descriptions of all such recently introduced 

 trees as Picea Morrisonicola from Formosa, Abies Forrestii from 

 Yunnan, Abies koreana, Abies nephrolepis, and Thuya ko?-aeensis 

 all from Korea. The authors follow Elwes and Henry, and 

 not Sargent, in regarding Abies Lowiana as a distinct species 

 from A. concolor. They follow Voss in considering Finns 

 cetnbroides (Zuccarini) to include those other Pinons, F. edulis, 

 P. monophyila, and P. Parryana as varieties. 



The principal varieties of all species are dealt with, though 

 we may be grateful that it has not been considered necessary to 



