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Phylogenetics Of The "Tiger-Flower" Group (Tigridieae: Iridaceae): Molecular And Morphological Evidence, Aaron Rodriguez, Kenneth J. Sytsma
Phylogenetics Of The "Tiger-Flower" Group (Tigridieae: Iridaceae): Molecular And Morphological Evidence, Aaron Rodriguez, Kenneth J. Sytsma
Aliso: A Journal of Systematic and Floristic Botany
The phylogenetic relationships among 23 species of the tribe Tigridieae (lridaceae) were inferred using morphological data and nucleotide sequences from nuclear ITS and three intergenic spacers of the cpDNA: psbA-trnH, trnT-trnL, and trnL-trnF. Although all data sets supported a monophyletic Mexican-Guatemalan Tigridiinae including two taxa usually placed in Cipurinae (Cardiostigma longispatha and Nemastylis convoluta), neither morphology, cpDNA, nor ITS resolved phylogenetic relationships within this lineage. A graphical tree of trees analysis showed the cladograms derived from morphology to be the most topologically distinct within the set of all trees …
Patterns In Evolution In Characters That Define Iris Subgenera And Sections, Carol A. Wilson
Patterns In Evolution In Characters That Define Iris Subgenera And Sections, Carol A. Wilson
Aliso: A Journal of Systematic and Floristic Botany
Subgeneric groups have been circumscribed in Iris based on a small number of morphological characters. Recent DNA sequence data has indicated that several of the subgenera, sections, and series that have previously been delineated are paraphyletic or polyphyletic. The evolution of characters that have traditionally been used to distinguish sub generic and sectional groups within Iris was investigated by mapping these characters on a phylogenetic tree based on matK sequence data. Results indicate that rhizomes are pleisomorphic for the genus and that three bulb types have arisen independently. My analysis shows that sepal beards, sepal crests, and seed arils …
The Role Of Phylogenetic Constraints In The Evolution Of Pollination Mechanisms In Iridaceae Of Sub-Saharan Africa, Peter Bernhardt, Peter Goldblatt
The Role Of Phylogenetic Constraints In The Evolution Of Pollination Mechanisms In Iridaceae Of Sub-Saharan Africa, Peter Bernhardt, Peter Goldblatt
Aliso: A Journal of Systematic and Floristic Botany
Novel, specialized systems exploiting bibionid flies, oil-collecting bees, wasps, or crepuscular settling moths as pollen vectors are added to the range of recorded pollination mechanisms in sub-Saharan Africa Iridaceae, while knowledge of the pollination of previously understudied genera such as Aristea, Bahiana, Ferraria, Hesperantha, and Tritoniopsis is expanded. The pollination of 357 species of the sub-Saharan African Iridaceae now includes 17 discrete systems. Based on repetitive interlinked suites of floral attractants and rewards we now infer pollination mechanisms for an additional 883 species. Many pollination systems recur in genera containing > 10 species. The ancestral pollination in African Iridaceae, and …