378 BOTANICAL GAZETTE [May 
judiciously planted American oaks or maples in these parks would give 
to the effect just those touches of color that to an American eye seem 
lacking to make perfect an autumn afternoon stroll. 
There is a large field for the study of autumn foliage in Europe 
and in this country. Individual peculiarities ought to be studied and 
trees that can be propagated asexually chosen from the thousands of 
seedlings in the parks. The physiological conditions which produce 
these colorations will be most interesting, and the effects of hybridiza- 
tion of highly coloring species may be something phenomenal. With 
the growing passion for ornamentals this feature cannot fail long to 
attract serious attention, and it would be an easy thing to carry 0D 
some international experiments, introducing into Europe quantities of 
: our gorgeously coloring species.—Davip G. FaiRcHILD, Department 
> of Agriculture, Washington, D. C. 
ee A NEW HELIOTROPIUM. 
THE cosmopolitan Heliotropium curassavicum is supposed to ) be 
su ciently well known, and the idea that the name may at present 
cover more than one species does not seem to be entertained. How- 
: ever, when I saw the plant passing as H. curassavicum in southern 
California, last summer, I was strongly impressed with the idea that 
it was quite distinct from that of southern New Mexico (Mesilla val- 
. _ ley) and northern Mexico (Juarez in Chihuahua), which | had been 
a familiar to me for some years past. The latter plant is lower 
robust, with white flowers, which are visited at Juarez by ; 
_ bee of the genus Perdita, a strong indication that the — * x 
_ a native oF the hier 
a on 53 ie ow 20 broad ; average loaves oS long at 
i larger leaves about 1™ thick, smaller 0.5". Flowers att 
= curassavicum ; flowering spikes usually in threes, about 2 
ss Gating fruit to 60™ or more ; flowers 7"" diameter, varyi 
spike from 5 to 6-lobed corolla; corolla white, throat de 
yellow (both colors ¢ on same spike); calyx-lobes lanceolate, 
pe of the corolla; corolla more or Sod pers © ont ide, 80 
