— 62- 
NOTES ON NOMENCLATURE XL 
Elizabeth G, Britton. 
Parts 234-235 of Engler and Prantl, Pflanzenfamilien, was received 
April 16, 1909, and includes pages 1153-1246 with a reprint of pages 699-702 
to replace the ones already issued. These parts conclude the’ mosses, give 
title-pages, table of contents, generic index and dates of publication and sup- 
plement. The genus Cirriphyllum is completed with 4 North American 
species and C. Boscii is misspelled ; Oxyrhynchium includes one Mexican 
species, and O. rusciforme (Neck.) Warnst. Eurhynchium six North 
American species and Bryhnia three, Rigodium is represented by one 
species from Costa Rica, Rhynchostegiella by one species and Ryhnchoste- 
gium by six. 
In the appendix we find a number of additions and changes which will 
affect the card catalogue which we have kept at the New York Botanical 
Garden of the North American species of mosses; the following are noted: 
Pleuridium Bakeri\ Seligeria subcampylopoda ; 5 . patula and var. tris- 
tichoides\ Dicranella substenocarpa-, Cynodontium Treleasii\ Dichodon- 
tium Nelsoni\ Holomitrium Maxoni\ Leucoloma Dussianum\ Dicranum 
hispidulum ; D. subjiage Hare and D. subulifpUum ; FissiUens arcticus, F. 
He Her i, F. Bushii and F rochensis ; Syrrhopodon Dussii , S. martinicensis 
and S. Pit tier i\ Calymperes Heribaudi and C. portoricense ; Gysnostomum 
laeve\ Trichostomum cuspidatissimum and Leptodontium excelsum. 
On page 1190 Brotherus has dedicated a new genus to Mr. R. S. 
Williams to include a Bolivian species which has been described as Syrrho- 
podon tricolor. Only a year before a small tree of the Rubiaceae had been 
named for Mr. Williams by Elmer D. Merrill in the Phillippine Journal of 
Science 3: 165, 1908. This moss may therefore very properly be called 
W ILLIAMSIELLA TRICOLOR (nom. nOV.) 
Other species of the Pottiacqae are Hyophila riparia , H. mollis and H. 
guadeloupensis , and Barbula Bakeri , B. Treleasii, B. rigens, B. 
andrecieoides and B. subandreceoides as well as Phascum hyalitrichum r 
Pottia nevadensis and Tortula Bushii , T. brachypoda and T. macrotricha. 
Of the Grimmiaceae , Glyphomitrium Leibergii and eight species of 
Grimmia are also added; Orthotrichaceae , 0 . sordidum , 0 . minutum and 
LJlota alaskana are listed. Of the Splachnaceae, Tetraplodon australis and 
Splachnum australe are listed, as well as Physcomitrum rufipes , Funaria 
spathulifolia and F.polaris in the Funarieae. Of Bryums there are forty- 
five species added, principally from Arctic and Subarctic America. One 
Mnium and one Meesia , three species of Philonotis and one of Poly trichum 
are additions. 
Of the Pleurocarpous mosses, two species of Fontinalis are added, and 
a number of recent changes and corrections are accepted, notably in 
Frpodium } Brachelyma , Dendropogonella, Dendroalsia and Pseudo- 
cryphaea. Papillaria martinicensis and Barbella pendula occur within 
our limits, and Tripterocladium includes T. Brewerianum and T. Howei 
