1916] 
PALMER—PLANTS OF JASPER COUNTY, MISSOURI 349 
of a limited area, will be of some value and interest to 
future investigators. 
I wish to express my sincere thanks to all of the botanists 
and friends who have aided and encouraged me in the col- 
lection and study of the plants of southwest Missouri. To 
Mr. B. F. Bush, whose unflagging interest in the work from 
its beginning has been one of the chief stimulants to its 
prosecution, I am under many obligations, both for the de- 
termination of plants during successive years when my time 
and botanical knowledge were both very limited, and for 
the contribution of literature and specimens for comparison. 
As the pleasant companion, too, of many botanical excursions 
I have had the benefit of his unequaled knowledge of plants 
in the field. I am also greatly indebted to Dr. C. 8. Sargent 
for the interest he has taken in our woody flora and its in- 
vestigation. Recognized as the highest authority on North 
American trees, his publication of several new species from 
Jasper County has made the region of considerable interest 
to the botanical world. Thanks are due to Dr. Ezra Brainerd 
for examining and revising the violets; to Mr. F. W. Pennell 
for checking the species of Agalinis and allied genera and 
for his key to this interesting group; to Mr. W. H. Blanchard 
for valuable notes on the Rubi, and to others. I also wish 
to make acknowledgments to Dr. George T. Moore, Director 
of the Missouri Botanical Garden, for affording the oppor- 
tunity to publish this paper, and to Dr. J. M. Greenman, 
Curator of the Herbarium, for valuable suggestions and in- 
terest shown in the work. 
DESCRIPTION OF JASPER COUNTY 
Jasper County, Missouri, is situated near the southwestern 
corner of the state, being in the western tier of counties bor- 
dering on Kansas, and but the third north from the Arkansas 
line. Its northern boundary is formed by Barton and Dade 
Counties, the eastern by Dade and Lawrence, and the south- 
ern by Newton County. In outline it is nearly rectangular. 
The width from north to south is about 21 miles, and length 
