The genera of the Eupatorieae (Asteraceae)

King, Robert M.; Robinson, Harold

doi:10.5962/bhl.title.156613

Cited by 157 publications

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“…The tribe Eupatorieae has many New World genera, and Eupatorium is one of the few representatives of Eupatorieae in Asia (King and Robinson, 1987). This suggests that Eupatorium is of New World origin.…”

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Phylogeny and Phytogeography of Eupatorium (Eupatorieae, Asteraceae): Insights from Sequence Data of the nrDNA ITS Regions and cpDNA RFLP

et al. 2000

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The relationships of eastern North American-eastern Asian-European disjuncts in the genus Eupatorium were examined by sequencing the internal transcribed spacers (ITS) of nuclear ribosomal DNA and restriction site analysis of chloroplast DNA. Molecular data provided strong evidence that (1) this genus originated in North America, (2) the genus diverged into three morphological species groups, €utm&ium, T-aganthes and Uncasia in North America, and (3) one of the North American Uncasia lineages migrated into temperate Europe and eastern Asia over the Bering land bridge. The estimated divergence times support a late Miocene to early Pliocene migration from North America to Eurasia via the Bering land bridge. A European species was sister to all of the eastern Asian species examined. The disjunct distribution pattern of the genus Eupatorium is incongruent with the classical Arcto-Tertiary geoflora concept.

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“…The eastern Asian and European species have decussate leaves, except for E. glehni, which has verticillate leaves. On the basis of phyllotaxis and leaf morphology, the eastern Asian and European species are considered more closely related to Uncasia than to Eutrochium or Traganthes (King and Robinson 1987).…”

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Phylogeny and Phytogeography of Eupatorium (Eupatorieae, Asteraceae): Insights from Sequence Data of the nrDNA ITS Regions and cpDNA RFLP

et al. 2000

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“…The predominant chromosome number at the species, genus, and subtribe levels is x=10, and most previous workers regarded x=10 as the ultimate base number (see King and Robinson 1987 for review). Eupatorium species with 2n=20 have 10 well-diverged pairs of chromosomes and show regular bivalent formation in meiosis (Watanabe et a/.…”

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Molecular Phylogeny of Eupatorieae (Asteraceae) Estimated from cpDNA RFLP and its Implication for the Polyploid Origin Hypothesis of the Tribe

et al. 2000

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The tribe Eupatorieae has a chromosome base number that ranges from 4 to 25. A molecular phylogenetic analysis using cpDNA restriction site mutations was performed. Fifteen species representing 13 subtribes of the tribe Eupatorieae were examined, together with three species from the tribe Heliintheae as outgroups. A total of 103 restriction site mutations were detected, and 31 of these were phylogenetically informative. Parsimony analysis produced a single most parsimonious tree with 117 steps. This tree suggested that two clades diverged early in the evolution of the tribe Eupatorieae. One clade includes Neomirandea (x=17 and 25), Agerafina (x=17) and Sclerolepis (x=15) with the higher chromosome base numbers, and the other includes Mikana (x=17) and the remaining genera with lower chromosome base numbers (x=lO-ll). However, the monophyly of the former clade is supported with a low bootstrap value. In the latter clade, Mikana (x= 17) diverged first, then Sfevia (x=ll), and finally eight genera with x=10 diverged in succession. This result supports the hypothesis that the genera in the tribe Eupatorieae with x=10 evolved from an ancestor with a higher base number, and the tribe is of polyploid origin.

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“…As originally circumscribed, the receptacles in Agrianthus are epaleaceous, but Mattfeld (1923) later added paleate species in his synopsis. An acceptable modern description of the genus was provided by King & Robinson (1987) and I have suggested more recently that further modifications are necessary (Hind 1993: 265;Hind & Robinson 2006: 542). When I described A. almasensis D. J. N. Hind (with obviously pubescent leaves) and A. giuliettiae D. J. N. Hind (Hind 1993: 269), two more paleaceous species were added.…”

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Agrianthus carvalhoi (Compositae: Eupatorieae: Gyptidinae), a new species from Bahia State, Brazil

Hind

2009

Kew Bull

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The genera of the Eupatorieae (Asteraceae)

Cited by 157 publications

References 0 publications

Phylogeny and Phytogeography of Eupatorium (Eupatorieae, Asteraceae): Insights from Sequence Data of the nrDNA ITS Regions and cpDNA RFLP

Phylogeny and Phytogeography of Eupatorium (Eupatorieae, Asteraceae): Insights from Sequence Data of the nrDNA ITS Regions and cpDNA RFLP

Molecular Phylogeny of Eupatorieae (Asteraceae) Estimated from cpDNA RFLP and its Implication for the Polyploid Origin Hypothesis of the Tribe

Agrianthus carvalhoi (Compositae: Eupatorieae: Gyptidinae), a new species from Bahia State, Brazil

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