between ribs or wings a rib or low sharp ridge. sw United States, n Mexico, ne Africa. Species 17 (12 in the flora). R. A. Levin (2000) showed that Selinocarpus
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H. G. A. Engler et al., eds. 1924+. Die natürlichen Pflanzenfamilien..., ed. 2. 26+ vols. Leipzig and Berlin. Vol. 16c, pp. 86–134. Levin, R. A. 2000.
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early branching of Ludwigia (R. A. Levin et al. 2003, 2004). This large and diverse lineage is distinguished by the presence of a floral tube beyond the apex
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Epilobieae, and Onagreae), the last two tribes form a clade that has very strong molecular support (R. A. Levin et al. 2003, 2004), but no obvious morphological
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Maytenus, Mortonia, Parnassia, Paxistima, Schaefferia R. Brown Jinshuang Ma, Peter W. Ball, Geoffrey A. Levin Common names: Staff-tree or Bittersweet Family Treatment
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support for the tribe is strong (97–100% BOOTSTRAP support; D. A. Baum et al. 1994; R. A. Levin et al. 2004). Endlicher established Epilobieae and included
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Pleradenophora, Ricinus, Stillingia, Tragia, Triadica, Vernicia Jussieu Geoffrey A. Levin, Lynn J. Gillespie Common names: Spurge Family Treatment appears in FNA
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morphological and molecular analyses (see R. A. Levin et al. 2003, 2004). Ludwigia is distinguished by the absence of a floral tube, persistence of sepals on
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four-angled capsules. Blakelock, R. A. 1951. A synopsis of the genus Euonymus L. Kew Bull. 6: 210–290. Ma, J. S. 2001. A revision of Euonymus (Celastraceae)
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lanceolata Show Lower Taxa Acleisanthes lanceolata var. lanceolata (Wooton) R. A. Levin Novon 12: 61. 2002. Jackie M. Poole Common names: Gyp moonpod Illustrated
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speciesCanotia holacantha Torrey ex A. Gray in J. C. Ives, Rep. Colorado R. 4: 15. 1861. Jinshuang Ma, Geoffrey A. Levin Common names: Crucifixion thorn Illustrated
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morphological characteristics. J. Torrey Bot. Soc. 134: 441–450. Pooler, M. R., R. L. Dix, and J. Feely. 2002. Interspecific hybridizations between the native
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Taxa Canotia holacantha Torrey ex A. Gray in J. C. Ives, Rep. Colorado R. 4: 15. 1861. Jinshuang Ma, Geoffrey A. Levin Etymology: Spanish name in Mexico
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the interior deserts and bordering areas of the western United States. R. A. Levin et al. (2004) found strong molecular support for paraphyly in the broadly
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entire petals that taper to a distinct claw. Even though molecular support for sect. Phaeostoma is not strong (R. A. Levin et al. 2004), at this time it
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Taxa Breynia disticha J. R. Forster & G. Forster Char. Gen. Pl. ed. 2, 145, plate 73. 1776. name conserved Geoffrey A. Levin Common names: Snowbush Introduced
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basal split recognized in all phylogenetic studies (R. H. Eyde 1981; P. C. Hoch et al. 1993; R. A. Levin et al. 2003, 2004; V. S. Ford and L. D. Gottlieb
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Molecular studies with broad sampling in Onagreae (R. A. Levin et al. 2004) showed high support for a monophyletic Oenothera only when Calylophus, Gaura
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speciesCelastrus scandens Linnaeus Sp. Pl. 1: 196. 1753. Jinshuang Ma, Geoffrey A. Levin Common names: American bittersweet IllustratedEndemic Treatment appears
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speciesAcleisanthes chenopodioides (A. Gray) R. A. Levin Novon 12: 60. 2002. Jackie M. Poole Illustrated Basionym: Selinocarpus chenopodioides A. Gray Amer. J. Sci. Arts
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