Ob THE JOURNAL OF BOTANY 



specimens of S. alba x fragilis, S. caprea, L. f. vel hybrida, 

 *S'. caprea x myrsinites, S.o-urita, L., S.cinerea, L. (two examples), 

 S. aurita X cinerea ; in the second (1913) are S. triandra, L., 

 S. triandra, L. f. near subsp. Hojfmanniana (Sm.), S. aurita x 

 purpurea, S. cinerea x purpurea, S. aurita x caprea, S. cajyrea x 

 rcpens, S. cinerea, L. forma, S. Andersoniana x cinerea, S. Ander- 

 soniana x j^^^ylicifolia. Offers of co-operation should be addressed 

 to the Rev. Edward P. Linton, Edmondsham Rectory, Cranborne. 



The parts of Herr Carl Christensen's Index Filicum were 

 noticed in this Jom-nal as they appeared during the years 1905-7. 

 There is no need now to point out the remarkable value of this 

 useful work ; for all students of ferns recognize its high merits, 

 and the International Congress of Botanists at Brussels in 1910 

 selected it as the starting-point for the nomenclature of ferns. Herr 

 Christensen has recently published a Supplement {Index Filicum. 

 S^ipplementum, 1906-1912. Hafniae 1913 apud H. Hagerup. 

 Pp. 133), divided into two parts — the first containing the names of 

 33 genera and subgenera and of 2611 species proposed during the 

 years mentioned ; the second consisting of corrections of, and addi- 

 tional synonyms to, several species adopted in the Index. — A. G. 



The recent parts of the Transactioyis of the Linnean Society 

 include Mrs. A. Weber van Bossa's account of the Marine Algae 

 (BhodophycecB) collected by Mr. J. Stanley Gardiner during the 

 ' Sea-lark ' expedition to the Indian Ocean in 1905 (October, 1913) ; 

 Professor Harvey-Gibson's observations of the morphology and 

 anatomy of Mystropetalon (December, 1913) ; and an account of 

 the cuticles of some recent and fossil Cycadean fronds by Mr. 

 H. H. Thomas and Miss Nellie Bancroft, also published last 

 December. Dr. Weber van Bosse's paper, which is illustrated by 

 three plates, contains the description of two new genera, Oligo- 

 cladus and Amphishetema, and of numerous new species ; Tapei- 

 nodasya Ethelce commemorates Mrs. Gepp, who has unfortunately 

 been prevented by illness from working out the collection. 



Some of the sections of Die Silsstvasser-Flora Deutsclilands, 

 Osterreichs und der Schweiz, issued under the general editorship 

 of Prof. A. Pascher, have recently been noticed in this Journal. 

 Another section (Heft 14, Bryophyta. Jena : Gustav Fischer, 

 1914. Pp. iv and 222 ; figs. Price, Mk. 5-60, in paper cover ; 

 Mk. 6-20, bound), the joint production of three experts, is now 

 published, and comprises the following groups : Sphagnales 

 (C. Warnstorf), Bryales (W. Monkemeyer), HepaticaB(V. Schiffner). 

 The number of species comprised in the three groups is forty- 

 eight, one hundred and forty, and sixty respectively. It is at first 

 sight rather surprising to find so many mosses included in a list 

 of water-plants. The explanation is that many species, which 

 normally thrive in a dry habitat, have a capacity for adapting 

 themselves to an aquatic life. The three authors have discharged 

 their task conscientiously, and give careful descriptions of every 

 genus, species, variety, and form, with keys to facilitate the work 

 of identification. The figures are numerous, and many of them 

 are original. — A. G, 



