sectionPenstemon sect. Saccanthera Show Lower Taxa Penstemon azureus, Penstemon caesius, Penstemon cusickii, Penstemon diphyllus, Penstemon filiformis, Penstemon
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another. Rubus caesius generally has broader middle primocane leaflets than R. ursinus, but that is not a consistent difference. Rubus caesius may have been
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allegheniensis, Rubus arcticus, Rubus bartonianus, Rubus bifrons, Rubus caesius, Rubus canadensis, Rubus chamaemorus, Rubus cuneifolius, Rubus deliciosus
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woodland or wreath goldenrod verge d’or bleuâtre Endemic Synonyms: Aster caesius (Linnaeus) Kuntze Treatment appears in FNA Volume 20. Treatment on page
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subgenusPenstemon subg. Penstemon sectionPenstemon sect. Saccanthera speciesPenstemon caesius A. Gray Proc. Amer. Acad. Arts 19: 92. 1883. (as Pentstemon) Craig C. Freeman
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bogs in New Jersey (G. Moore, pers. obs.). The superficially similar R. caesius differs from R. hispidus in its pruinose stems, deciduous and non-lustrous
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trifoliate-leaved forms of R. ursinus are vegetatively nearly identical to R. caesius. Of agricultural significance, R. ursinus is a parent of some important
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fruits and stems and is similar in general appearance to the introduced R. caesius. Rubus vagus L. H. Bailey is an illegitimate later homonym that applies
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