U. S D E PA R T M E N T O F AG R I C U LT U R E .
DIVISION OF BOTANY.




CONT RI BU T IO NS

F RO M




THE U. S. NATIONAL HERBARIUM.
Vol. III.


REPORTS ON COLLECTIONS, REVISIONS OF GROUPS,
AND MISCELLANEOUS PAPERS.



REVISIONS OF NORTH AMERICAN GRAMINEÆ AND CACTACEÆ, STUDIES OF SPECIAL
GROUPS, AND CATALOGUES OF PLANTS COLLECTED IN NEBRASKA, IDAHO,
SOUTH DAKOTA, KANSAS, WYOMING, ALASKA, AND MEXICO,
WITH GEOGRAPHIC REPORTS AND DESCRIPTIONS OF
NEW GENERA AND SPECIES.




WASHINGTON:
GOVERNMENT P RINT ING OFFICE.
1892–1896.