BOOK-XOTES, >'EWS, ETC. 279 



publication might have been inentioned : it is of interest to know 

 that the white-flowered form of Oplirys apifcra found by Dean 

 Gamier — tl>e author referred to (see Journ. Bot. 1873, 256) — was 

 seen b}^ Canon Vaughan in the same locality a hundred years later. 

 The publisher must, one assumes, have some reason for issuing with 

 uncut edges a book printed on soft paper, but it is difficult to con- 

 jecture wliat tin's can be. 



The Kew Bulletin (no. 7) contains an account of "A Trip to the 

 Knysna," undertaken in connection with the work for the Botanical 

 Survey of the Union of South Africa which was begun in 1918 by 

 Mr. S. Schonland ; a description of two new species of Ovulariopsis 

 from the West Indies by Miss E. M. Wakefield ; notes on Jeffer- 

 sonia and Plagirhegma (the latter united with the former by 

 Bentham and Hooker) by Mi-. Hutchinson, and on Amoora spccta- 

 bilis and A. Walliclui by H. H. Haines; a revision of the cultivated 

 species of FheUodcmlron, by Mr. Sprague ; and a continuation of the 

 " Decades Kewenses," mostly by Mr. J. S. Gamble. 



The latest issue of Notes from the Iloif((l Botanic Garden^ 

 Edinhurc/li (nos. 57, 58), contains descriptions of forty new species 

 of Rhodode]idron, mainly from the apparently inexhaustible collections 

 of this genus which were made in Yunnan and elsewhere by Mr. G. 

 Forrest, whose name is associated with Prof. Balfour's in most of the 

 descriptions. We note that the date on the wrapper is "March 

 1920"; that of the Stationery Office on the first page is "9/20": 

 in view of the diiticulties connected with dates which at one time and 

 for a long period characterized the Kew Bulletin it seems desirable to. 

 call attention to a possible source of confusion. 



The Neiv Fhytologist (July and Oct., published Aug. 24) has 

 a long paper on " Hybridism and Classification in the (Jenus Bosa''' 

 by Mr. J. K. Matthews, which should interest British botanists : the 

 author " would at present strongly support any systematist who 

 returned to the Linnean conception of the species [i2. canina'], 

 denoting its various combinations by some purely symbolical method," 

 and thinks that " it" a single aggregate species were submitted to 

 systematic crossing and fully worked out along the lines of Mendelian 

 research, we should obtain results Avhich Avould form a real eonti-ibu- 

 tion to our knowledge of this most difficult genus." Dr. Gates con- 

 tinues his observations on " Mutation and Evolution " and Mr. J. H. 

 Priestley writes on " 'J'he Mechanism of Root Pressure." 



The first memoir of the Botanical Survey of South Africa 

 (Pretoria, 2s. Qd.) is devoted to a Phanerogamic Flora of the divi- 

 sions of Uitenhage and Port Elizabeth, by Dr. S. Schonland. It 

 contains notes on the systematic elements of the Flora and on plant- 

 formations and plant-associations, followed by a list of the plants known 

 to occur in the districts, with localities and occasional notes : a table 

 of the genera with an indication of the number of s^^ecies in each 

 brings the useful memoir to a close. 



We have received the 85th and 36th Annual Reports (1918-19, 

 1919-20), issued together, of the Watson Botanical Exchange Club, 

 which contain as usual much interesting matter, wherefrom we hope 

 later to print extracts. An excellent portrait of the late E. S. Marshall 

 faces the title. 



