New Combinations in Malva (Malvaceae: Malveae)
نویسندگان
چکیده
منابع مشابه
Malvone A, a phytoalexin found in Malva sylvestris (family Malvaceae).
The isolation and structure of a phytoalexin, malvone A (2-methyl-3-methoxy-5,6-dihydroxy-1,4-naphthoquinone) is reported. Malvone A formation is induced in Malva sylvestris L. by the plant pathogen Verticillium dahliae. In a turbimetric assay for toxicity to V. dahliae, it had an ED50 value of 24 microg/ml. The structure of malvone A was determined by MS and NMR spectroscopy, and by X-ray crys...
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Phylogenetic relationships among genera of tribe Malveae (Malvaceae, subfamily Malvoideae) were reconstructed using sequences of the internal transcribed spacer (ITS) region of the 18S-26S nuclear ribosomal repeat. Newly generated sequences were combined with those available from previous generic level studies to assess the current circumscription of the tribe, monophyly of some of the larger g...
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A molecular phylogenetic analysis of the tribe Malveae (subfamily Malvoideae, Malvaceae) was undertaken using the internal transcribed spacer region of the 18S-26S nuclear ribosomal repeat (ITS). This work represents the first exhaustive study to evaluate the infratribal circumscription and generic affinities using molecular sequence data. The ITS phylogeny indicates that the informal tribal al...
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Taxonomic notes in the Neotropical genus Pseudobombax (Malvaceae) are presented. One new combination and two new heterotypic synonyms for taxa originally described from Brazil and Ecuador are proposed based on both morphological and previously published molecular evidence. The taxonomic changes will be adopted in a treatment of Pseudobombax for the upcoming Brazilian Flora 2020 and in a forthco...
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288 new combinations of Neotropical Thelypteridaceae taxa are proposed in order to recognize monophyletic genera, based on the results of the most recent molecular phylogeny of the family, as well as the morphological uniformity of characters for each genus. The new nomenclatural combinations correspond to 186 Amauropelta taxa, 77 species of Goniopteris, and 25 Steiropteris taxa. A key to all n...
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ژورنال
عنوان ژورنال: Novon
سال: 1998
ISSN: 1055-3177
DOI: 10.2307/3392022