206 BOTANICAL GAZETTE [ MARCH 
around certain centers, and moving upwards collect to form the cysts 
attached to the cystophore, which is largely made up of hardened secretion. 
The rods in the cysts may retain their simple vegetative character or they 
may form spores (Myxococcus). 
Zukal thinks it probable that a motile stage similar to the myxamoeba 
stage of Myxomycetes follows the germination of the cysts. Thaxter has 
followed the germination of the cysts in detail. ‘The mass of rods thus freed 
begins at once to vegetate, the individuals dividing rapidly and entering 
upon a new period of activity.” 
Zukal, in spite of the simplicity of the plasmodium without nuclei and 
only made up of granular matter (microsomata), thinks the form of fruc- 
tification sufficiently like some higher fungi (for example Botrytis) to hint 
a possible evolution of such forms from certain low types. Such evolution is 
to come about through epigenetic development embodying Lamarckian 
factors in an extreme form. 
Thaxter sees in the structure and development of the rods undoubted 
schizomycete characters which clearly place the Myxobacteriacee in that 
‘group of plants. But while the rods are individuals they nevertheless act 
together in a remarkable m manner, under certain conditions, to form a fructifi- 
plasmodium of Myxomycetes but the cytological differences are enormous. 
“In view of such important differences, the writer (Dr. Thaxter) would 
hesitate to assume even a remote genetic connection between two groups on 
a basis of resemblance which might well be purely accidental.” 
_ Perhaps in this connection it may not be out of place to inquire of Migula 
_where he puts the Myxobacteriacez. No mention is made of the group in 
his account of the Schizomycetes to be found in Die Natiirliche Pflanzenfa- 
milien.— BRADLEY Moore Davis, University of Chicago. 
BIBLIOGRAPHY OF HYPOXIS. 
‘To 2 the Editors as the Botanical Gazette at have examined with interest 
f the GAZETTE on Hypoxis 
peng ig presentation of which T bad the pleasure of listening to 
at the —— Society of Washington a few months since. The article” 
contains o 
Vemuat wemcsgeneee! 4 hough essentially unimportant may, however, be 
of your readers I refer to the statement that the name — 
“The evidence that Linnaeus’ mame was “not a a nomen nudum 
14 
= 2 r 
4 crane aneaa one 
