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Geographic variation in the leaf essential oils of Hesperocyparis (Cupressus) abramsiana, H. goveniana, and H. macrocarpa: Systematics implications
Vol 91, Iss 2, Page 226
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Geographic variation Hesperocyparis (Cupressus) arizonica and H. glabra: RAPDS analysis
Vol 91, Iss 2, Page 244
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Solidago dispersa (Asteraceae: Astereae) replaces Solidago ludoviciana as the correct name
Vol 91, Iss 2, Page 251
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Recension of the Mexican species of Salvia (Lamiaceae), section Scorodonia
Vol 91, Iss 2, Page 256
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Keys to the flora of Florida: 22, Dicerandra (Labiatae)
Vol 91, Iss 2, Page 270
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Infraspecific variation in Hesperocyparis govenina and H. pymaea: ISSRs and terpenoid data
Vol 91, Iss 2, Page 277
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Infraspecific variation in Hesperocyparis abramsiana: ISSRs and terpenoid data
Vol 91, Iss 2, Page 287
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Frangula betulifolia and F. obovata (Rhamnaceae) are distinct species
Vol 91, Iss 2, Page 300
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Taxonomy of Asclepias hirtella and A. longifolia (Apocynaceae)
Vol 91, Iss 2, Page 308
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Three new species of Koanophyllon (Asteraceae: Eupatorieae) from Mexico
Vol 91, Iss 2, Page 312
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Notes on non-native Asteraceae in Texas
Vol 91, Iss 2, Page 325
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Thymophylla tenuiloba and T. wrightii (Asteraceae: Tageteae)
Vol 91, Iss 2, Page 333
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Biological status of the varietal taxa of Thymophylla pemtachaeta (Asteraceae: Tageteae)
Vol 91, Iss 2, Page 340
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Panicum coloratum new for Arizona, and Echinochloa holciformis new for the United States
Vol 91, Iss 2, Page 347
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Variation in Juniperus durangensis and related junipers (Cupressaceae): Analysis of nrDNA and petN SNPs
Vol 91, Iss 2, Page 353