276 BOTANICAL GAZETTE [MARCH 
structures of the group into one general survey, and especially the layers of the 
testa. He reiterates the belief that in the structures referred to Cycadeoidea 
most resembles Lagenostoma, and of course it is to be included, on account of 
its generally ancient features, in the general category of seeds of paleozoic 
type.—J. M. C 
Flora of Kansas.—Mr. and Mrs. Smyru have begun the publication of a 
catalogue of the flora of Kansas,37 the first part issued containing the mosses 
and ferns. The large groups are described both taxonomically and morpho- 
logically, and the families, genera, and species listed, the habitats and stations 
so being indicated. The classification is unconventional. It is interesting to 
note that the display of these groups in Kansas, on the basis of the number of 
species, is as follows: liverworts 25, mosses 107, pteridophytes 33.—J. M. C. 
Mitosis in cereals.—Naxao* presents the results of his study of mitosis 
in the pollen mother cells of four cereals: Triticum vulgare, Hordeum distichon, 
Secale cereale, and the hybrid between 7. vulgare and S. cereale. The num 
of chromosomes is 8 in wheat and rye, and 7 in barley. The appearance 
of abnormal features in the development of the pollen mother cell was a 
common tendency, as well as a tendency to degenerate at various stages.— 
S. YAMANOUCHI. 
Calcareous and siliceous vegetation—BoucEtT® concludes from a 
study of calcareous and siliceous floras in the Pyrenees that the plants of cal- 
careous soil are more responsive to seasonal differences than are those of 
siliceous soil. Calcareous soils also are richer in species than are siliceous soils, 
and they show at a given altitude a greater mixture of plants whose chief 
distributional areas are higher and lower—H. C. Cow es. 
s7 SmyTH, BERNARD B., and Lumina C. Rwp te, Catalogue of the flora of Kansas. 
Part I. Mosses and ferns: Trans. Kan. Acad. Sci. 23:273-295. 1911. Also issued 
with index and separate pagination. 
Nakao, M., Cytological studies on the nuclear division of the pollen mother 
cells of some coral and their hybrids. Jour. Coll. Agric. Sapporo (Japan) 4:173-190. 
pls. 10-13. 1911. 
% Boucet, J., Note sur la végétation de la bande septentrionale des terrains 
secondaires ane les Pyrénées. Rev. Gén. Bot. 22:213-221. IgIo. 
