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Monography of the Genus Silphium : I. Silphium composium Michaux (Compositae)

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Title: Monography of the Genus Silphium : I. Silphium composium Michaux (Compositae)
Creators: Sweeney, Carol R.
Issue Date: 1970-07
Citation: The Ohio Journal of Science. v70 n4 (July, 1970), 226-233
Abstract: Silphium compositum, a polymorphic species of southeastern United States, is recognized to consist of the following subspecies: ssp. compositum, ssp. reniforme, ssp. venosum, and ssp. ovatifolium. The subspecies are distinguished primarily by leaf and achene characters, and are sympatric in some areas. Descriptions, synonomy, distribution maps and citation of representative specimens of the taxa are included.
URI: http://hdl.handle.net/1811/5552
ISSN: 0030-0950
Rights: Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given.
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