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Authors

S. M. Dietz

Document Type

Research

Abstract

All of the several species and varieties of Rhamnus exposed to infection with Puccinia coronata Corda show some degree of infection with some form of crown rust. Eleven species of Rhamnus produced aecidiospores which were able to infect oats, from teleutospores developed on oats. Of the susceptible buckthorn species, only Rhamnus cathartica, R. lanceolata and R. alnifolia occur in Iowa. The former is a cultivated species imported from Europe that has escaped from cultivation in many places. Rhamnus lanceolata is commonly found along the small streams and shaded dry runs throughout the southern half of this state and as far north as Sioux City on the Missouri river and McGregor on the Mississippi. Rhamnus alnifolia is confined to a few counties in extreme northeastern Iowa.

Publication Date

1924

Journal Title

Proceedings of the Iowa Academy of Science

Volume

31

Issue

1

First Page

130

Last Page

131

Copyright

©1924 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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