Doheny Memorial Library, Los Angeles, CA 90089-0189 Public Domain. Release under the CC BY Attribution license--http://creativecommons.org/licenses/by/3.0/--Credit both “University of Southern California. Libraries” and “California Historical Society” as the source. Digitally reproduced by the USC Digital Library; From the California Historical Society Collection at the University of Southern California Send requests to address or e-mail given USC Libraries Special Collections specol@usc.edu
Description
Photograph of a close-up of a specimen of black mustard (Brassica nigra), ca.1920. On a dark background. "Black mustard (Brassica nigra) grows from 2 to 6 feet high. The leaves and lower portion of the stems are covered with bristly hairs. The small, bright-yellow flowers are produced from June to September in racemes at the ends of the stems, followed by erect pods crowded against them in dense clusters. These pods when ripe contain numerous small and roundish, blackish or reddish brown seeds. Black mustard was introduced from Europe and is a common weed in cultivated ground and waste places almost throughout the United States, being especially troublesome in grain fields and pastures. It is cultivated in California." -- unknown author.
Type
image
Format
2 photographs : glass plate negative, transparency, b&w 26 x 21 cm. negatives (photographic) photographs
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