110 THE JOURNAL OF BOTANY 



prove an excellent introduction to the study of cryptogamic 

 botany. The book is unique in the stress which it lays upon the 

 cryptogamic section of the plant world, a section known principally 

 in many of our English " schools " through the intricacies of the 

 vascular anatomy of Pteridophytes — present and past. It is well 

 printed and well illustrated. ^ -p 



Icones Orchidearum Austro-Africanarum Extra-tropicarwn ; or, 

 Figures with Descriptions of Extra-trojncal South African 

 Orchids. By Harry Bolus, F.L.S., Hon. D.Sc. (Cape). 

 Volume iii., demy 8vo, tt. 100, with text. Wesley. Price 

 £1 10s. net. 



It is satisfactory to learn that the late Mr. Bolus's important 

 work is to be carried on by Mr. H. M. L. Bolus, the Curator of 

 the Bolus Herbarium. The present volume was apparently left 

 in MS. by the author of the preceding instalments, as his name 

 alone appears on the title-page, and the preface, while acknow- 

 ledging the help of Mr. F. Bolus, who has drawn nine of the 

 plates and made additions of various kinds to others, makes no 

 reference to any collaborator in the literary portion. 



Of the plates in the volume before us, 36 have already appeared 

 in the author's Orchids of the Cape Peninsula, which is now out 

 of print. Among the genera represented, Disa has 36 plates, 

 Satyriitm 12, Disperis and Pterygodinm 11 each ; the other 

 genera included are Acrolophia, Eulophia, AngrcBCum, Bartholina, 

 Huttoncea, Holothrix, Hahenaria, Brachycorythis, and Ccratandra. 

 The descriptions correspond with those of the previous volume 

 noticed in this Journal for 1912 (p. 28). There is a new species 

 of Holothrix — H. Beckii, named after its discoverer and sole 

 collector ; and a hybrid — Satyriuni coriifolium x carneum — 

 described from three living specimens, found growing widely 

 apart, but always among the parent species. 



Floral Evolution : with Particular Reference to the Sympetalous 



Dicotyledons. By H. F. Wernham, B.Sc. Neio Phytologist 



reprint, No. 5. Pp. viii + 151. Price 3s. Cambridge: at 



the Botany School. 



The above work is based upon a course of lectures delivered 



by Mr. Wernham at the Chelsea Polytechnic in the summer of 



1910, and was published in its present form in the pages of the 



Neio Phytologist. The author states that his purpose has been 



to give a connected account of one of the larger groups (namely, 



the GamopetalcB or Metachlamydea or Sympetalce) of flowering 



plants, with continual reference to a definite evolutionary story, 



having for its motif a few broad biological principles applicable to 



the phylogeny of the Angiosperms generally. " In the endeavour 



to preserve the continuity of this evolutionary story, it has been 



necessary to hasard suggestions of affinities and lines of descent 



which may be by no means generally acceptable ; and the student 



is warned that in such cases the suggestions are purely tentative." 



