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Phylogenetic Analyses And Biogeography Of Trilliaceae, Susan B. Farmer
Phylogenetic Analyses And Biogeography Of Trilliaceae, Susan B. Farmer
Aliso: A Journal of Systematic and Floristic Botany
Trilliaceae are plants of North Temperate forests with a holarctic distribution and a high degree of endemism. Molecular phylogenetic analyses are presented in order to examine the tribal, generic, and species-level classification of the family. These molecular studies, and earlier morphological studies, support the placement of the genus Pseudotrillium as basal in the family and sister to the tribes Trillieae and Parideae, which are monophyletic sister groups. Trillidium (Trillium) govanianum provides an unresolved problem: morphologically it is included within Parideae, but molecular data place it within Trillium as sister to T. undulatum. Within tribe Trillieae, clades are …
The Evolutionary And Biogeographic Origin And Diversification Of The Tropical Monocot Order Zingiberales, W. John Kress, Chelsea D. Specht
The Evolutionary And Biogeographic Origin And Diversification Of The Tropical Monocot Order Zingiberales, W. John Kress, Chelsea D. Specht
Aliso: A Journal of Systematic and Floristic Botany
Zingiberales are a primarily tropical lineage of monocots. The current pantropical distribution of the order suggests an historical Gondwanan distribution, however the evolutionary history of the group has never been analyzed in a temporal context to test if the order is old enough to attribute its current distribution to vicariance mediated by the break-up of the supercontinent. Based on a phylogeny derived from morphological and molecular characters, we develop a hypothesis for the spatial and temporal evolution of Zingiberales using Dispersal-Vicariance Analysis (DIVA) combined with a local molecular clock technique that enables the simultaneous analysis of multiple gene loci with …
Missing Links Between Disjunct Populations Of Androcymbium (Colchicaceae) In Africa Using Chloroplast Dna Noncoding Sequences, Alberto Del Hoyo, Joan Pedrola-Monfort
Missing Links Between Disjunct Populations Of Androcymbium (Colchicaceae) In Africa Using Chloroplast Dna Noncoding Sequences, Alberto Del Hoyo, Joan Pedrola-Monfort
Aliso: A Journal of Systematic and Floristic Botany
With the objective of clarifying some aspects of the biogeography, phylogeny, and taxonomy of the genus Androcymbium, we sequenced three chloroplastic DNA noncoding regions (trnL intron, trnL-trnF IGS, and trnY-trnD IGS). These data were analyzed with maximum parsimony and the ancestral areas methods following Bremer. Results show that Androcymbium is not monophyletic and that the origin of its distribution and speciation is situated in western South Africa. Later, it dispersed to North Africa, going first to eastern South Africa. Androcymbium austrocapense and A. roseum allow us to phylogenetically connect the species of …
Gondwanan Origin Of Major Monocot Groups Inferred From Dispersal-Vicariance Analysis, Kåre Bremer, Thomas Janssen
Gondwanan Origin Of Major Monocot Groups Inferred From Dispersal-Vicariance Analysis, Kåre Bremer, Thomas Janssen
Aliso: A Journal of Systematic and Floristic Botany
Historical biogeography of major monocot groups was investigated by biogeographical analysis of a dated phylogeny including 79 of the 81 monocot families using the Angiosperm Phylogeny Group II (APG II) classification. Five major areas were used to describe the family distributions: Eurasia, North America, South America, Africa including Madagascar, and Australasia including New Guinea, New Caledonia, and New Zealand. In order to investigate the possible correspondence with continental breakup, the tree with its terminal distributions was fitted to the geological area cladogram ((Eurasia, North America), (Africa, (South America, Australasia)) and to alternative area cladograms using the TreeFitter program. The results …