photo submitted by the estate of E.S. Boerner with plant patent application in 1968; U.S. Plant Patent 2,998 was granted in 1970. Image and information courtesy of University of Maryland Libraries.
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photo submitted by the estate of E.S. Boerner with plant patent application in 1968; U.S. Plant Patent 2,998 was granted in 1970. Image and information courtesy of University of Maryland Libraries.