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Chromosome Numbers in Compositae, XVI: Eupatorieae II
Harold Robinson, A. Michael Powell, Gerald D. Carr, Robert M. King and James F. Weedin
Annals of the Missouri Botanical Garden
Vol. 76, No. 4 (1989), pp. 1004-1011
Published by: Missouri Botanical Garden Press
Stable URL: http://www.jstor.org/stable/2399689
Page Count: 8
You can always find the topics here!Topics: Ploidies, Chromosomes, Biological taxonomies, Genera, Species, Alto, Vouchers, Botanical gardens, New species, Polyploidy
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An additional 159 chromosome reports are provided for the tribe Eupatorieae with 13 new generic and 60 new species reports. Numbers now known include 94 of the 180 genera and over 450 of the more than 2,000 species. A primary base of x = 10 is confirmed for most of the subtribes, including the Adenostemmatinae (with first report of Sciadocephala), Eupatoriinae, Gyptidinae, most of the Ageratinae and Alomiinae, Liatrinae (with first report of Hartwrightia), Fleischmanniinae, Critoniinae, and Praxelinae. The occurrence of n = 9 is consistent for four additional species in Acritopappus of the Ageratinae, independent of that base number in the Brickellia group of the Alomiinae. Numerous reports are added for the Central American polyploid complex in Fleischmannia. Consistent higher base numbers of x = 16-25 are found in new reports for the subtribes Neomirandeinae, Mikaniinae, and Oxylobinae. Numbers of n = ca. 20-26 are noted in two species of Kaunea of the Oxylobinae with correction of one previous lower count erroneously credited to K. lasiophthalma. Distribution of the two bases, x = 10 and 16, in the Hebecliniinae are cited and problems in Bartlettina and the Critoniine genus Eupatoriastrum are discussed.
Annals of the Missouri Botanical Garden © 1989 Missouri Botanical Garden Press