224 . BOTANICAL GAZETTE [OCTOBER 
NOTES POR STUDENTS 
Taxonomic notes.—LiInDAUS has published the following new genera of 
Acanthaceae from Colombia: Syringidium and Kalbreyeriella. 
Naxaré has described eighteen new Japanese species of Viola. 
Hircucock? has published an account of the grasses of British Guiana 
based upon his collection during the autumn of 1919, and also upon the eollec- 
tion of the Jenman Herbarium. The list of grasses thus far includes 169 species, 
ten of which are described as new, four of them being species of Panicum. 
Most of British Guiana is covered by virgin forest, with extensive upland 
savannas only in the south. Of the 169 species included, thirty-three are 
introduced, the greater proportion of these being in the vicinity of settlements. 
rxon® has published an account of the mosses of the Wollaston Expedi- 
tion to she New Guiana in 1912-1913. He states that “the moss flora of 
New Guiana affords, perhaps, the most interesting field for the present day 
bryologist. Large tracts of Central Africa remain no doubt comparatively 
unexplored, and recent discoveries there show that much is still to be expected 
of bryological interest.’”’ The report includes also some additional mosses from 
British New Guiana. Among the species enumerated, twenty-three are de- 
scribed as new. 
Compton? has published an account of the plants collected in New Cale- 
donia and the Isle of Pines in 1914. The Gnetales and Ginkgoales are absent 
from New Caledonia, and the Cycadales are represented by a single species, 
which occurs only in the littoral zone. On the other hand, the Coniferales are 
developed to quite an exceptional degree, being represented by thirty-one 
species, an unusually large number for so small an area. Another remarkable 
feature of the coniferous flora is that apparently the whole of it is endemic. 
The range of the Taxineae is extended to New Caledonia by the new genus 
Austrotaxus, while the Cupressineae include the new genus Callitropsis. 
Drxon’’ - described the following new genera of mosses, mostly from 
Africa: Nanobryum, Chionoloma, Beddomiella, CEdipodiella, Chamaebryum, 
Phosmibulehes and Dimorphoc 
5 LINDAU, G., Neue er der Acanthaceen. Notizblatt Bot. Gart. Berlin- 
Dahlem 8:142-144. 1922 
6 NAKAI, ‘ecwame Violae novae Japonicae. Bot. Mag. Tokyo 36:29-39- 
1922. 
7 Hircucock, A. S., Grasses of British Guiana. Contrib. U.S. Nat. Herb. 22: 
439-514. figs. 77-86. 1922. 
n, H. N., The mosses of the Wollaston Expedition to Dutch New Guiana. 
Jour. Linn. Soc. 45:477-510. pls. 28, 29. 1922. 
9 Compton, R. H., A systematic account of the plants collected in New Caledonia 
and the Isle of Pines by R. H. Compron in 1914. Part II. Gymnosperms. Jour. 
Linn. Soc. 45: 421-434. pls. 26, 27. 1922. 
10 Drxon, H. H., Some new genera of mosses. Jour. Botany 60: 101-110. pl. 564- 
1922. 
