No. 1, August, 1920] MORPHOLOGY AND TAXONOMY, BRYOPHYTES 83 



616. Britton, E. G. Mosses of Bermuda. Bryologist 22: 87. 1919.— Tins list of 

 twenty-two species is an enumeration without comment of the forme mentioned in the 

 recently issued Flora of Bermuda by Bkitton and others. — Edward />'. Chamberlain. 



617. Brotiierus, V. F., and W. W. Watts. The mosses of North Queensland. I 'roc. 

 Linnaean Soc. New South Wales 43: fill .V>7. 191S.- In a foreword the second author gives 

 a brief description of the region where most of his collections were made and refers to the 

 important work on the mosses of Queensland done by F. M. Bailey. He calls attention to 

 the fact that the species of North Queensland are Malasian rather than Australian in their 

 affinities. He notes further that, as a result of his explorations, one new genus and fourteen 

 new species have been brought to light, that 17 other genera and 30 other species have been 

 added to the flora of Australia, and that numerous species, heretofore known only from other 

 parts of Australia, can now be definitely recorded from Queensland. In the main body of 

 the work a list of species is given, with localities and occasional notes on distribution, and 

 the new genus and new species are described. The new genus, Pterobryidium Broth. & Watts., 

 is related to Pterobyropsis Fleisch. and is based on a single species. The new species are the 

 following, Brotherus and Watts being the authorities except where otherwise noted: Brachy- 

 menium Wattsii Broth., Bryum kurandae, Campylopus Wattsii Broth., Chaetomitrium ento- 

 donloides, Dicranoloma Wattsii Broth., Eclropothecium serriofolium, Floribundaria robustella, 

 Fissidens cairnensis, F. kurandae, Pterobryidium australe, Pterobryopsis filigera, Syrrhopodon 

 cairnensis, Taxithelium Wattsii Broth, and Trichosteleum elegantulum. To these should be 

 added Mniodendron comatulum Geheeb, a manuscript species here described for the first time. 

 — A. W. Evans. 



618. Chamberlain, Edward B. [Rev. of: Amann, J., and C. Meylan. Flore des 

 mousses de la Suisse. [Flora of the mosses of Switzerland.] Geneve, 1918. (See also Bot. 

 Absts. 4, Entry 1032.)] Bryologist 22: 41-43. 1919.— The reviewer criticises the method 

 employed by the authors in the citation of authorities for binomials. In all cases the original 

 authority for the species is given, but when this name appears in parentheses the authority 

 for the combination is not indicated in any way; the reader, therefore, unless thoroughly 

 conversant with the literature, is in doubt as to "whether the combination be 'new' or not." 

 In other respects the reviewer speaks in high terms of the work. — A. W. Evans. 



619. Corbiere, L. Deux mousses africaines egalement francaises. [Two African mosses 

 occurring likewise in France.] Rev. Bryologique 41: 84-85. 1914. [Issued in 1919.1— In this 

 paper (which is to be continued) the discovery of Grimmia Pitardi Corb. in the department 

 of Var in southern France is announced. The species was described in 1909 from specimens 

 collected in Tunis and has since been recorded from Tripoli. A full description is included. 

 — A. W. Evans. 



620. Dixon, H. N. Rhaphidostegium caespitosum (Sw.) and its affinities. Jour. Botany 

 58: 81-89. 1920. — The author's first impression of Rhaphidostegium sphaerotheca (C. M.) 

 Jaeg., obtained from material collected on Table Mountain, Cape Colony, led him to believe 

 that it was a well-marked species. Further study, however, showed that this was not the 

 case but that the Table Mountain specimens, which were exceptionally large and fine, belonged 

 to an extensive "Formenkreis," the usual material of which was small and commonplace. 

 In this "Formenkreis" the author was able to include a number of specimens from South and 

 Central Africa and from the Mascarene Islands, some of which had been referred to other 

 species or even to other genera. Previous experience suggested that when a plastic species 

 had a wide African distribution it was well to look further and see if it might not be identical 

 with some South American or Australian species. Acting on this hypothesis the author was 

 able to demonstrate that R. sphaerotheca was really a synonym of the American 7?. caespi- 

 tosum (Sw.) Jaeg., a species originally described by Swart z from West Indian material under 

 the name Hypnum caespitosum. He was able to show further, by the study of numerous type- 

 specimens, that R. caespitosum had many synonyms and that it had a cosmopolitan range in 

 the tropical and subtemperate portions of the Southern Hemisphere, even extending into 



