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Campbell 1987). More recent studies, both morphological (Van den Borre and Watson 1997, 2000) and molecular (Soreng and Davis 1998; Hilu et al. 1999; Hsaio

1997; A. B. Doweld 2001). T. B. Patterson (1998), K. Kubitzki et al. (1990+, vol. 3), W. S. Judd et al. (1999), R. F. Thorne (2000), and T. B. Patterson

Heliantheae in a broad sense into a dozen or so tribes (e.g., B. G. Baldwin and B. L. Wessa 2000; Baldwin et al. 2002; J. L. Panero and V. A. Funk 2002). Much

(subg. Salix); 2b) all the other species (subg. Chamaetia and Vetrix). The species in this subgroup were unresolved. T. Azuma et al. (2000) sought to determine

(M. F. Fay et al. 1998; S. B. Johnson-Fulton 2014; R. C. Keating 1970, 1972; H. H. Poppendieck 1980; V. Savolainen et al. 2000b). A thorough monograph of

Goldman 2000; D. H. Goldman et al. 2001). Calopogon appears to exhibit deceit pollination (L. van der Pijl and C. H. Dodson 1966; L. B. Thien and B. G. Marcks

Fursa, T. B. 1981. Intraspecific classification of water-melon under cultivation. Kulturpflanze 29: 297–300. Jarret, R. L. and M. Newman. 2000. Phylogenetic

Nebr., Okla., S.Dak., Calif., Iowa, Pacific Islands (Hawaii), Alta., B.C., Man., N.B., N.S., Ont., P.E.I., Que., Sask., Mass., Maine, N.H., R.I., Vt., Fla

Coastal Plain (P.S. Martin and B.E. Harrell 1957; E.L. Little Jr. 1971b; A.Graham 1972b, 1973b; A.J. Sharp 1972, 1972b; see A.Graham, chap. 3). In part

Skrifter. Norton, B. G., ed. 1986. The Preservation of Species. The Value of Biological Diversity. Princeton. Norton, B. G. 1986b. Epilogue. In: B. G. Norton

maritima (M.Josselyn 1983; K.B. Macdonald and M.G. Barbour 1974; B.E. Mahall and R.B. Park 1976; L.Neuenschwander et al. 1979; J.B. Zedler 1982). From Oregon

Phellodendron, Platycarya, Pterocarya, Rhoiptelea, Sciadopitys, and Zelkova (B.H. Tiffney l985b, among others). This depauperization of our flora is well documented