Phylogenetic patterns in Northern Hemisphere plant geography

TitlePhylogenetic patterns in Northern Hemisphere plant geography
Publication TypeJournal Article
Year of Publication2001
AuthorsDonoghue MJ, Bell CD, Li J
JournalInternational Journal of Plant Sciences
Volume162
PaginationS41-S52
ISSN10585893
KeywordsBiological Sciences, Botany & Plant Sciences
Abstract

Geological and climatological processes that have impacted the biota of the Northern Hemisphere during the Tertiary are expected to yield little resolution when area cladograms are compared without taking the timing of diversification into account. In an attempt to establish a set of appropriate phylogenetic comparisons, we distinguished between a Pacific track involving (minimally) China, Japan, and eastern North America but not Europe, and an Atlantic track involving China, Europe, and eastern North America but not Japan (or, in most cases, western North America). Within the two Atlantictrack taxa considered hereLiquidambar and CercisEuropean and North American species are more closely related to one another than they are to the Asian species. Within a set of five Pacifictrack taxaHamamelis, WeigelaDiervilla, Triosteum, Buckleya, and Torreyawe see all possible relationships involving China, Japan, and eastern North America. Estimates of minimum divergence times between Old World and

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