NOTES AND OBSERVATIONS. 151 
leaves as well as root), P. Torreyi (very abundant in some 
specimens, others with hardly a trace). 
The coloring matter in the American plants seems 
to be the same as that derived from Alkanna tinctoria. 
Though I know of no analysis of any of the American 
Borraginaceae, Professor Pammel and myself have ob- 
tained the characteristic reactions from the leaves and roots _ 
of Plagiobothrys with resin and oils. The color is also very 
persistent on the hands after handling the plants. Per- 
haps some economical use may be made of our American 
plants. . 
b. NOTES ON SOME PLANTS, CHIEFLY FROM THE SOUTHERN 
UNITED STATES. 
BY J. B. 8. NORTON. 
The following notes and descriptions are based princi- 
pally upon an examination of several collections from the 
Southern States, which have been acquired by the Missouri 
Botanical Garden during the past year, with the addition 
of a few others from scattering collections which I deemed 
especially noteworthy. The larger collections are: (1) 
The herbarium of the late Dr. Joseph F. Joor, of New 
Orleans, La., containing a few thousand plants, mostly his 
own collections in southern Louisiana and Mississippi, and 
in eastern Texas, a region not well known botanically. 
The collection is especially rich in grasses and grass-like 
plants, none of which I have included here, these notes 
being mainly on such plants as seemed noteworthy in 
preparing the plants for the herbarium. A further ex- 
amination of the collection will no doubt reveal many 
things of interest concerning the botany of the South. 
(2) The herbarium of Gustave Jermy, of San Antonio, 
Texas, which contains practically a complete representa- 
tion of the flora of Gillespie Co., Tex. A large part of 
these have been noted in Coulter’s Botany of Western 
