54 BOTANICAL GAZETTE. | March, 
species of the western part of California, extending eastward 
to the Sierra Nevada, of very variable foliage, but compar- 
atively broad-leaved. Indeed the rounded lower leaves are 
sometimes barely 3-lobed, and the divisions commonly round- 
obovate or cuneiform. The typical form (the plant raised in 
the St. Petersburgh garden, from seeds gathered at the Ross 
for identification) has flowers as large as those of D. i 
ziestz. Other specimens agree with this ; but not rarely, bot 
in the northern and southern districts, it is much smaller- 
a common form, with narrow leaf-lobes, and a narrower 
raceme of rather small flowers, the pedicels in fruit ascend- 
ing. It would be taken for a quite distinct species, except 
for the intermediate forms. os 
D. pauciflorum Nutt. The type of this species occurs 
in the Rocky Mountains, from Wyoming and adjacent parts ‘ 
of Colorado to Idaho, and a slender form reaches the eastern 
borders of Washington Territory, and also California, where 
ar. depauperatum, taken to be D. de auperatum 
Nutt. in Torr. & Gray, having broader leaf-lobes, may really 
be only an attenuate form of D. decorum var. patens. Addi- 
tional materials and well formed fruit are wanted. 
River, above th 
e ] 
antly collected by Howell, Henderson, Suksdorf, etc. Nut 
tall’s specimen is ticketed * Columbia Plains.” 
On the causes of the variations in the contents of sucrose im 
Sorghum saccharatum. : 
HARVEY w, WILEY. 
r some years I have been investigating the Sorghum 
as eel m respect of its adaptability to the production 
sugar, 
During this time many difficulties have been encountered 
and these troubles have all been overcome with one excep- 
