Chloroplast DNA (с DNA) restriction site variation among 24 of 27 extant species of the Hawaiian silversword alliance (Argy.roxiphium, Dubautia, Wilkesia) was studied to enhance understanding of phylogenetic pattern ns and evolutionary processes in this outstanding example of insular adaptive radiation.Analysis with 16 restriction endonucleases revealed a total of comparisons amon hese taxa, cpDNA нса ата of the silversword alliance, in accord with 55 restriction site differences, 36 being shared by a subset of at least two taxa.In pairwise divergence ranged from 0 to 0.46% of nucleotides.Шш DNA divergence Annals of the Missouri Botanical Garden = Argyroxiphium caliginis C. Forbes -BGB 660, Pwu Kukui, West Maui.Argyroxiphium grayanum (Hillebrand) Degener BGB 661, Pwu Kukui, West Maui; 4. Medeiros East Maui.Arg yroxiphium sandwicense DC. subsp.macrocephalum (A.Gray) Meyrat -(GDC 1239), Haleakala, East Maui.Arg vroxiphium sandwicense DC. subsp.sandwic-s.n., Haleakala, ense В 657 (P), upper Wailuku drainage, Mauna Kea, Hawaii.Dubautia arborea (A.Gray) Keck BGB 527 (P), Pu'u La'au, Mauna Kea, Hawaii; ane 056), upper Wailuku drainage, Mauna Kea, Haw Dubautia ciliolata (DC.)Keck subsp.cial 529 (P), Crater Rim Trail, Kilauea Dubautia ciliolata (DC.)Keck subsp.pone ia G. (BGB 525) (P), near Pwu Huluhulu, Hawaii; (BGB did upper Wailuku drainage, Mauna Kea, Hawaii BGB жо herbstobatae б.Carr -GDC 1244, Ohikilolo idge, Waianae Range, Oahu.
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Baldwin et al. (1990) studied this question.