tomentose. Group B. Leaves deciduous, abaxial surfaces tomentose. Group C. Shrubs or trees, erect; leaves persistent, abaxial surfaces tomentose. Group D. Stems
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to be a member of the unrelated Nitrariaceae (Angiosperm Phylogeny Group). Beier, B.-A. et al. 2004. Phylogeny and taxonomy of the subfamily Zygophylloideae
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“composites,” or “comps”) have long been recognized as a natural group, and circumscription of the group has never been controversial (although some authors have
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(Lessing) R. M. King & H. Robinson)]; revised concepts of this species group (B. L. Turner 1996+, vol. 2) place F. pycnocephala as a related species in
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evidence for a sister-group relationship between Carlquistia and Madia in the strict sense is consistent with x = 8 in both groups (B. G. Baldwin 1996). Carlquistia
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1–18. Koch, M. et al. 1999b. Molecular systematics of Arabidopsis and Arabis. Pl. Biol. (Stuttgart) 1: 529–537. Koch, M., B. Haubold, and T. Mitchell-Olds
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and R.B. Shaw. 1983. Grass Systematics, ed. 2. Texas A&M University Press, College Station, Texas, U.S.A. 397 pp. Grass Phylogeny Working Group. 2001.
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Erigeron, American Conyza, the four genera of the South American Leptostelma group, and the North American Aphanostephus; the cladistically basal and terminal
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Sargent is known to hybridize with B. papyrifera Marshall, producing B. ×winteri Dugle, and with B. glandulosa, producing B. ×uliginosa Dugle. None. None.
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Poaceae tribe Gynerieae, Poaceae tribe Paniceae Link Grass Phylogeny Working Group Treatment appears in FNA Volume 25. Treatment on page 351. Plants annual
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Phylogeny Working Group. 2001. Phylogeny and subfamilial classification of the grasses (Poaceae). Ann. Missouri Bot. Gard. 88:373-457 Jacobs, B.F., J.D. Kingston
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plants of B. goodrichii (= B. retrofracta × B. gracilipes), B. consanguinea (= B. retrofracta × B. fendleri), and B. pinetorum (= B. retrofracta × B. rectissima
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largest genus in Brassicaceae, is a well-defined, monophyletic, and complex group represented by native species on all continents except Australia and Antarctica
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monophyletic groups composing the Leontipes group correspond to traditionally recognized groups (R. J. Bayer 1990; Bayer et al. 1996). The Geyerae group is monotypic
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Molecular, morphological, and chemical data (C. R. Bensel and B. F. Palser 1975, 1975b, 1975c, 1975d; B. A. Bohm et al. 1988; M. L. Haskins and W. J. Hayden 1987;
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Aristidoideae Show Lower Taxa Poaceae tribe Aristideae Caro Grass Phylogeny Working Group, Kelly W. Allred Treatment appears in FNA Volume 25. Treatment on page 314
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and N. K. B. Robson. 1961. A re-evaluation of the generic status of Ascyrum and Crookea (Guttiferae). Rhodora 63: 10–16. Adams, W. P. 1962b. Studies in
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to Rosaceae, but Angiosperm Phylogeny Group (2003) indicated instead that in Rosales, Rosaceae is sister to a group of families including Moraceae, Rhamnaceae
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and deserts. Preliminary molecular phylogenetic studies by D. G. Kelch and B. G. Baldwin (2003) indicated that this diversity is the product of a rapid
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pp. 49–77. Morgan, D. R. and B. B. Simpson. 1992. A systematic study of Machaeranthera (Asteraceae) and related groups using restriction site analysis
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