subfamilyPoaceae subfam. Pooideae tribePoaceae tribe Triticeae genus×Elyleymus B.R. Baum Mary E. Barkworth Treatment appears in FNA Volume 24. Treatment on page 343
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18(2): 26–32. Baum, B. R. 1964. On the vernales-aestivales character in Tamarix and its diagnostic value. Israel J. Bot. 13: 30–35. Baum, B. R. 1967. Introduced
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speciosa McGregor Trans. Kansas Acad. Sci. 70: 366. 1967, Synonyms: Echinacea pallida var. simulata (McGregor) Binns, B. R. Baum & Arnason Treatment appears in FNA Volume
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1991); it has been affiliated with Sterculiaceae/ioideae (J. Hutchinson 1964–1967), Malvoideae (W. S. Alverson et al. 1999), and Bombacoideae (C. Bayer et
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