Bayer, R.J. and G.L. Stebbins. 1981. Chromosome numbers of North American species of Antennaria Gaertner (Asteraceae; Inuleae). Amer. J. Bot. 68: 1342-49.

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Crawford, D.J. and R.J. Bayer. 1981. Allozyme divergence in Coreopsis cyclocarpa (Compositae). Syst. Bot. 6: 373-379.

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Bayer, R.J. and G.L. Stebbins. 1982. A revised classification of Antennaria (Asteraceae: Inuleae) of the eastern United States. Syst. Bot. 7: 300-313.

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Bayer, R.J. and G.L. Stebbins. 1983. Distribution of sexual and apomictic populations of Antennaria parlinii. Evolution. 37: 555-561.

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Bayer, R.J. 1984. Chromosome numbers and taxonomic notes for North American species of Antennaria (Asteraceae: Inuleae). Syst. Bot. 9: 74-83.

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Price, H.J., Crawford, D.J., and R.J. Bayer. 1984. DNA contents of Coreopsis nuecensoides and C. nuecensis (Asteraceae), a progenitor-derivative species pair. Bot. Gaz. 145(2): 240-245.

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Bayer, R.J. 1985. Investigations into the evolutionary history of the polyploid complex Antennaria neodioica (Asteraceae: Inuleae). I. Pl. Syst. Evol. 150: 143-163.

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Bayer, R.J. 1985. Investigations into the evolutionary history of the polyploid complexes in Antennaria (Asteraceae: Inuleae). II. The A. parlinii complex. Rhodora 87: 321-339.

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Bayer, R.J. and D.J. Crawford. 1986. Allozyme divergence among five diploid species of Antennaria and their allopolyploid derivatives. Amer. J. Bot. 73: 287-296.

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Bayer, R.J. and G.L. Stebbins. 1987. Chromosome numbers, patterns of distribution, and apomixis in Antennaria (Asteraceae: Inuleae). Syst. Bot. 12: 305-319.

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Bayer, R.J., J.C. LaDuke, and D.J. Crawford. 1987. Isozyme variation in Trillium nivale (Liliaceae). Canad. J. Bot. 65:2250-2254.

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Bayer, R.J. 1987. Morphometric analysis of western North American Antennaria Gaertner (Asteraceae: Inuleae). I. Sexual species of sections Alpinae, Dioicae and Plantaginifoliae. Canad. J. Bot. 65:2389-2395.

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Bayer, R.J. 1987. Evolution and phylogenetic relationships of the Antennaria polyploid agamic complexes. [A review article]. Biol. Zentral. 106:683-698.

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Bayer, R.J. 1988. Typification of western North American Antennaria Gaertner (Asteraceae: Inuleae). I. Sexual species of sections Alpinae, Dioicae and Plantaginifoliae. Taxon 37:292-298.

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Bayer, R.J. 1988. Patterns of isozyme variation in western North American Antennaria (Asteraceae: Inuleae). I. Sexual species of section Dioicae. Syst. Bot. 13:525-537.

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Bayer, R.J. 1989. Patterns of isozyme variation in western North American Antennaria (Asteraceae: Inuleae). II. Diploid and polyploid species of section Alpinae. Amer. J. Bot. 76:679-691.

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Bayer, R.J. 1989. A taxonomic revision of the Antennaria rosea (Asteraceae: Inuleae: Gnaphaliinae) polyploid complex. Brittonia 41:53-60.

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Bayer, R.J. 1989. Patterns of isozyme variation in the Antennaria rosea (Asteraceae: Inuleae) polyploid agamic complex. Syst. Bot. 14:389-397.

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Bayer, R.J. 1989. Nomenclatural rearrangements in Antennaria neodioica and A. howellii (Asteraceae: Inuleae: Gnaphaliinae). Brittonia 41:396-398.

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Bayer, R.J. 1989. A systematic and phytogeographic study of Antennaria aromatica and A. densifolia (Asteraceae: Inuleae) in the western North American cordillera. Madroño 36:248-259.

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Bayer, R.J. 1990. A phylogenetic reconstruction of Antennaria Gaertner (Asteraceae: Inuleae). Canad. J. Bot. 68:1389-1397.

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Bayer, R.J. 1990. Investigations into the evolutionary history of the Antennaria rosea (Asteraceae: Inuleae) polyploid complex. Pl. Syst. Evol. 169:97-110.

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Bayer, R.J. 1990. A systematic study of Antennaria media, A. pulchella, and A. scabra (Asteraceae: Inuleae) of the Sierra Nevada and Inyo Mountains. Madroño 37:171-183.

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Bayer, R.J., K. Ritland and B.G. Purdy. 1990. Evidence of partial apomixis in Antennaria media (Asteraceae: Inuleae) detected by the segregation of genetic markers. Amer. J. Bot. 77:1078-1083.

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Bayer, R.J. 1990. Patterns of clonal diversity in the Antennaria rosea (Asteraceae) polyploid agamic complex. Amer. J. Bot. 77:1313-1319.

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St. Pierre, M.D., R.J. Bayer, and I.M. Weis. 1990. An isozyme-based assessment of the genetic variability within the Daucus carota L. complex (Apiaceae: Caucalideae). Canad. J. Bot. 68:2449-2457.

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Bayer, R.J. 1991. Isozymic and morphological variation in low arctic species of Antennaria (Asteraceae: Inuleae) from northwestern North America. Syst. Bot. 16:492-506.

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Bayer, R.J. 1991. A note on the geographic range of Antennaria aromatica Evert (Asteraceae: Inuleae). Sida, Contributions to Botany 14:505-506.

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St. Pierre, M.D. and R.J. Bayer. 1991. The impact of domestication on the genetic variability in the orange carrot, cultivated Daucus carota ssp. sativus, and the genetic homogeneity of various cultivars. Theor. Appl. Genet. 82:249-253.

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Bayer, R.J., B.G. Purdy, and D.G. Lebedyk. 1991. Niche differentiation among eight sexual species of Antennaria Gaertner (Asteraceae: Inuleae) and A. rosea, their allopolyploid derivative. Evol. Trends in Plants. 5:109-123.

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Downing, D.J., R.J. Bayer, and D.H. Vitt. 1991. Rare and disjunct plants from Whitemud Falls ecological reserve, northeast Alberta. Canad. Field Nat. 105:376-381.

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Bayer, R.J. 1991. Patterns of clonal diversity in geographically marginal populations of Antennaria rosea (Asteraceae: Inuleae) from subarctic Alaska and Yukon Territory. Botanical Gazette. 152:486-493.

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Bayer, R.J. 1992. Allozyme variation, ecology, and phytogeography of Antennaria arcuata (Asteraceae), a rare species from the Great Basin and Red Desert with small disjunct populations. Amer. J. Bot. 79:872-881.

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Bayer, R.J. 1992. Some observations on morphometric analyses of Antennaria (Asteraceae: Inuleae). Canad. J. Bot. 70:2316-2317.

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Bayer, R.J. and T.M. Minish. 1993. Isozyme variation, ecology and phytogeography of Antennaria soliceps (Asteraceae: Inuleae), a geographically restricted alpine apomict from the Spring Mountains, Nevada. Madroño 40:75-89.

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Bayer, R.J. 1993. A taxonomic revision of the genus Antennaria (Asteraceae: Inuleae: Gnaphaliinae) of Alaska and Yukon Territory, northwestern North America. Arctic and Alpine Research 25:150-159.

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Stebbins, G.L. and R.J. Bayer. 1993. Antennaria. In: The Jepson Manual of Higher Plants of California, J. Hickman Ed., University of California Press, pgs. 196-198.

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Bayer, R.J. and G.L. Stebbins. 1993. A synopsis with keys for the genus Antennaria (Asteraceae: Inuleae: Gnaphaliinae) for North America. Canad. J. Bot. 71:1589-1604.

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Montagnes, R.J.S., R.J. Bayer, and D.H. Vitt. 1993. Isozyme variation in the moss Meesia triquetra (Bryopsida: Messiaceae), along an arctic-boreal gradient. J. Hattori Bot. Lab. 74:155-170.

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Purdy B.G., R.J. Bayer, and S.E. Macdonald. 1994. Genetic variation, breeding system evolution and conservation of the narrow sand dune endemic Stellaria arenicola and the widespread S. longipes (Caryophyllaceae). Amer. J. Bot. 81:904-911.

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Purdy, B.G. and R.J. Bayer. 1995. Genetic diversity in the tetraploid sand dune endemic Deschampsia mackenzieana and its widespread diploid progenitor D. cespitosa (Poaceae). Amer. J. Bot. 82:121-130.

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Purdy, B.G. and R.J. Bayer. 1995. Allozyme variation in the Athabasca sand dune endemic, Salix silicola, and the closely related widespread species, S. alaxensis. Syst. Bot. 20:179-190.

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Bayer, R.J., D.E. Soltis, and P.S. Soltis. 1996. Phylogenetic inferences in Antennaria (Asteraceae: Inuleae: Gnaphaliinae) based on sequences from the nuclear ribosomal DNA internal transcribed spacers (ITS). Amer. J. Bot. 83: 516-527.

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Purdy, B.G. and R.J. Bayer. 1996. Genetic variation in the endemic Achillea millifolium subsp. megacephala (Asteraceae) from the Athabasca sand dunes and the widespread Achillea millifolium subsp. lanulosa in western North America. Canad. J. Bot. 74: 1138-1146.

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Bayer, R.J., L. Hufford, D.E. Soltis. 1996. Phylogenetic relationships in Sarraceniaceae based on rbcL and ITS sequences. Syst. Bot. 21: 121-134.

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Goffinet, B. and R.J. Bayer. 1997. Characterization of mycobionts of phototype pairs in the Peltigerineae (lichenized Ascomycetes) based on internal transcribed spacer sequences of the nuclear ribosomal DNA. Fungal Genetics and Biology 21: 228-237.

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Bayer, R.J. 1997. Antennaria rosea (Asteraceae) - A model group for the study of the evolution of polyploid agamic complexes. Opera Botanica 132:53-65.

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Ainouche, M. L. and R.J. Bayer. 1997. On the origins of the tetraploid Bromus species (section Bromus P.M.Sm., Poaceae): Insights from the internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA. Genome 40:730-743.

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Kernaghan, G., R. S. Currah, and R.J. Bayer. 1997. Russulaceous ectomycorrhizae of Abies lasiocarpa and Picea engelmannii. Canadian Journal of Botany 75:1843-1850.

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Cherniawsky, D.L. and R.J. Bayer. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae) I. Morphometric analyses. Canad. J. Bot. 76: 23-36.

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Bayer, R. J. and J. R. Starr. 1998. Tribal phylogeny of the Asteraceae based on two non-coding chloroplast sequences, the trnL intron and trnL/trnF intergenic spacer. Annals of the Missouri Botanical Garden 85: 242-256.

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Goffinet, B., R.J. Bayer, and D. H. Vitt. 1998. Circumscription and phylogeny of the Orthotrichales (Bryopsida) inferred from rbcL sequence analyses. American Journal of Botany 85: 1324-1337.

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Cherniawsky, D.L. and R.J. Bayer. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae) II. Isozyme analysis. Canad. J. Bot. 76: 1476-1487.

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Cherniawsky, D.L. and R.J. Bayer. 1998. Systematics of North American Petasites (Asteraceae: Senecioneae) III. A taxonomic revision. Canad. J. Bot. 76: 2061-2075.

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Ainouche, A-K and R.J. Bayer. 1999. Phylogenetic relationships in Lupinus (Fabaceae: Papilionoideae) based on internal transcribed spacer sequences (ITS) of nuclear ribosomal DNA. American Journal of Botany 86: 590-607.

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Starr, J. R., R.J. Bayer, and B. Ford. 1999. Phylogeny and sectional delimitation in Carex (Cyperaceae) using sequences from the internal transcribed spacers of nrDNA. American Journal of Botany 86: 563-577.

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Bayer, R.J. 1999. New perspectives into the evolution of polyploid complexes. In: Plant evolution in man-made habitats. Proceedings of the VIIth international symposium of the international organization of plant biosystematists (L.W.D. van Raamsdonk and J. C. M. den Nijs, eds.). Hugo de Vries Laboratory, Amsterdam, The Netherlands, pgs. 359-373.

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Ainouche, M.L., R.J. Bayer, J.-P. Gourret, A. Desfontaine, and M.T. Misset. 1999. The allotetraploid invasive weed Bromus hordeaceus (L.) Poaceae: Genetic diversity, origin, and molecular evolution. Folia Geobotanica 34: 405-419.

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Bayer, R.J., C. F. Puttock, and S. A. Kelchner. 2000. Phylogeny of South African Gnaphalieae (Asteraceae) based on two non-coding chloroplast sequences. Amer. J. Bot. 87: 259-272.

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Chandler, G. T. and R.J. Bayer. 2000. Phylogenetic placement of the enigmatic western Australian genus Emblingia based on rbcL sequences. Plant Species Biology 15: 67-72.

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Mant, J. G., R.J. Bayer, J. W. H. Trueman, and M. D. Crisp. 2000. A phylogeny of Triodieae (Poaceae: Chloridoideae) based on the ITS region of nrDNA: testing conflict between anatomical and inflorescence characters. In Jacobs S. W. L., Everett J. eds Grasses: Systematics and Evolution. Collingwood, Vic.: CSIRO, pp. 213-217.

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Ainouche, A.-K. and R.J. Bayer. 2000. Genetic evidence supports the new Anatolian lupine accession, Lupinus anatolicus, as an Old World "rough-seeded" lupine (section Scabrispermae) related to L. pilosus. Folia Geobot. 35(1): 83-95.

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Bayer, R.J. 2000. Observations on the morphology and geographic range of Antennaria dioica (L.) Gaertn. (Asteraceae: Gnaphalieae). Madroño 46: 205-207.

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Bayer, R.J. 2000. Remembrance of George Ledyard Stebbins (1906-2000). Evolution. 54(3): 1076–1077.

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Miller, J. M. and R.J. Bayer. 2001. Molecular phylogenetics of Acacia (Fabaceae: Mimosoideae) based on the chloroplast trnK/matK and nuclear Histone H3-D DNA sequences. In Herendeen PS, Bruneau A, eds. Advances in legume systematics: part 9. Kew: Royal Botanic Gardens, Kew, 2000, publ. 2001, pp.181-200.

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Miller, J. M. and R.J. Bayer. 2001. Molecular Phylogenetics of Acacia (Fabaceae: Mimosoideae) based on the chloroplast matK coding sequence and flanking trnK intron spacer regions. Amer. J. Bot. 88: 697-705.

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Chandler, G. T., R.J. Bayer, and M. D. Crisp. 2001. A molecular phylogeny of the endemic Australian genus Gastrolobium (Fabaceae: Mirbelieae) and allied genera using chloroplast and nuclear markers. Amer. J. Bot. 88: 1675-1687.

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Bayer, R.J. 2001. Xerochrysum Tzvelev, a pre-existing generic name for Bracteantha Anderb. & Haegi (Asteraceae: Gnaphalieae). Kew Bulletin 56: 1013-1015.

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Baumel A., M. L. Ainouche, R.J. Bayer R, and M-T. Misset. 2002. Molecular Phylogeny of hybridizing species from genus Spartina Schreb. (Poaceae). Mol. Phyl. Evol. 22: 303-314.

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Bayer, R.J. Greber, D. G., and N. H. Bagnall. 2002. Phylogeny of Australian Gnaphalieae (Asteraceae) based on four sequences, four sequences, the trnL intron, trnL/trnF intergenic spacer, matK, and ETS. Syst. Bot. 27: 801-814.

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Chandler, G. T., M. D. Crisp, L. W. Cayzer, and R. J. Bayer. 2002. Monograph of Gastrolobium (Fabaceae: Mirbelieae). Aust. Syst. Bot. 15: 619-739.

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Les, D. H., M. L. Moody, S. W. L. Jacobs, and R. J. Bayer. 2002. Systematics of seagrasses (Zosteraceae) in Australia and New Zealand. Syst. Bot. 27: 468-484.

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Bayer, R. J. and E. W. Cross. 2002. A reassessment of tribal affinities of the enigmatic genera Printzia and Isoetopsis (Asteraceae), based on three chloroplast sequences. Aust. J. Bot. 50: 677-686.

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Murphy, D. J., J. T. Miller, R. J. Bayer, and P. Y. Ladiges. 2003. Molecular phylogeny of Acacia subgenus Phyllodinae (Mimosoideae: Leguminosae) based on DNA sequences of the internal transcribed spacer region. Aust. Syst. Bot. 16: 19-26.

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Miller, J. T. and R. J. Bayer. 2003. Molecular phylogenetics of Acacia subgenera Acacia and Aculeiferum (Fabaceae: Mimosoideae), based on the chloroplast matK coding sequence and flanking trnK intron spacer regions. Aust. Syst. Bot. 16: 27-33.

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Andrew, R. L., J. T. Miller, R. Peakall, M. D. Crisp and R. J. Bayer. 2003. Genetic, cytogenetic, and morphological patterns in a mixed mulga population: evidence for apomixis. Aust. Syst. Bot. 16: 69-80.

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Baumel A., M. L. Ainouche, M. T. Misset, J-P. Gourret, and R. J. Bayer. 2003. Genetic evidence for hybridization between the native Spartina maritima and the introduced Spartina alterniflora (Poaceae) in South-West France: Spartina x neyrautii re-examined. Pl. Syst. Evol. 237: 87-97.

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Bayer, R. J. and E. W. Cross. 2003. A reassessment of tribal affinities of Cratystylis and Haegiela (Asteraceae) based on three chloroplast DNA sequences. Pl. Syst. Evol. 236: 207-220.

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Miller, J. T., R. L. Andrew, and R. J. Bayer. 2003. Molecular phylogenetics of the Australian acacias of subg. Phyllodineae (Fabaceae: Mimosoideae) based on the trnK intron. Aust. J. Bot. 51:167-177.

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Ainouche, A-K, R. J. Bayer, P. Cubas, and M. T. Misset. 2003. Phylogenetic relationships within tribe Genisteae (Papilionaceae) with special reference to the genus Ulex. In B. Klitgaard and A. Bruneau (eds.), Advances in Legume Systematics. Part 10, Higher Level Systematics. pp. 239-252. Royal Botanic Gardens, Kew.

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Chandler, G. T., R. J. Bayer, and S. R. Gilmore. 2003. Oxylobium/Gastrolobium (Fabaceae : Mirbelieae) conundrum: further studies using molecular data and a reappraisal of morphological characters . Plant Sp. Biol. 18: 91-101

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