In the summer of 1891, Per Axel Rydberg and his assistant, Julius
Hjalmar Flodman, collected plants in western Nebraska for the United
States Department of Agriculture. They collected many first-records for
Nebraska as well as some that became type specimens of Rydberg's and
other botanists' names. In the following autumn and winter, Rydberg made
a detailed, typewritten, carbon copied 35-page Report and 37-page List
of specimens from that trip; one carbon copy is in the Bessey Herbarium
(NEB) at the University of Nebraska-Lincoln. It is these documents that
we present here, extensively annotated with our geographic
clarifications, original and updated nomenclature, and citations of
specimens in NEB and elsewhere.