Phylogenetic Considerations of Euphorbiaceae Tribe Aleuritideae
نویسندگان
چکیده
منابع مشابه
Phylogenetic Relationships of Didymocistus and Hymenocardia ( Euphorbiaceae )
The genus Hymenocardia has been placed either in Euphorbiaceae subfamily Phyllanthoideae or in its own family and then associated with the Urticales, particularly the Ulmaceae. However, the pollen exine wall of Hymenocardia lacks the microchanneled tectum, granular interstitium, and thin foot-layer of the Urticales. Hymenocardia instead has many palynological features found in the Phyllanthoide...
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Dendrothrix condorensis K.Wurdack, sp. nov. from the sub-Andean cordilleras of Ecuador and Peru is described and illustrated. The new species is geographically widely separated from its likely closest relative, D. yutajensis, which is endemic to the Guiana Shield region of southern Venezuela and adjacent Brazil, and notably differs in leaf morphology. Vegetative (i.e., epidermal micropapillae, ...
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A cladistic analysis of the subfamily Euphorbioideae was undertaken to elucidate the origin of the cyathiumbearing Euphorbieae and to provide hypotheses about evolutionary relationships within the subfamily. Twenty-one species representing most of the genera within the study group and three outgroup taxa from the subfamilies Acalyphoideae and Crotonoideae were selected for parsimony analysis. A...
متن کاملPhylogenetic Implications of Pollen Ultrastructure in the Oldfieldioideae (Euphorbiaceae) Author(s):
The pollen structure of members of Euphorbiaceae subfamilies Oldfieldioideae and Phyllanthoideae was studied using scanning and transmission electron microscopy in order to assess taxonomic relationships. We identified 10 palynological characters that appear to have systematic significance. We also identified 37 characters of vegetative morphology and anatomy, mostly based on data obtained by H...
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ژورنال
عنوان ژورنال: Annals of the Missouri Botanical Garden
سال: 1999
ISSN: 0026-6493
DOI: 10.2307/2666174