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Title: Spiraea L.: spirea
Author: Zasada, John C.; Stickney, Peter F.;
Source: In: Bonner, Franklin T.; Karrfalt, Robert P., eds. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC. U.S. Department of Agriculture, Forest Service. p. 1067-1070.
Publication Series: Miscellaneous Publication
Description: There are about 80 species of the genus Spiraea throughout the world. The genus is subdivided into subgenera and sections in several ways depending upon the author - all classifications are based primarily on the structure of the inflorescence. In the system followed here (Batta 1977), the genus has 3 sections: Chamaedryon, Calospira, and Spiraria. In the United States and Canada, the taxa listed in table 1 are fairly common (Curtis 1959; Esser 1995; Fernald 1950; Habeck 1991; MacKinnon and others 1992; Ogle 1991b; Viereck and Little 1972). Virginia spirea occurs primarily in the southeastern United States and has been listed as a threatened species (Ogle 1991a).
Keywords: Spiraea L., spirea
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Zasada, John C.; Stickney, Peter F. 2008. Spiraea L.: spirea. In: Bonner, Franklin T.; Karrfalt, Robert P., eds. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC. U.S. Department of Agriculture, Forest Service. p. 1067-1070.
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