New species of Ipomoea (Convolvulaceae) from Bahia
نویسندگان
چکیده
منابع مشابه
New species of Ipomoea (Convolvulaceae) from South America
The importance of discovering, describing and cataloguing poorly known species in herbarium collections is discussed. It is a spur to efforts at rediscovery and consequent conservation efforts. The problems faced in describing species from limited material are discussed and our methods and criteria in making a decision are described. Prospects for future novelties are briefly assessed. Fifteen ...
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Angiosperm leaves are extremely variable in form while predominantly maintaining the function of the primary photosynthetic organ of the plant. Changes in leaf form can result from myriad physiological processes which may be influenced by ecology, physical stimuli, phylogeny, or other factors. In studying the development of divergent leaf forms among closely related species, conserved morpholog...
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The taxonomic treatment of Begoniaceae for the state of Bahia, Brazil, led to the recognition of three new species of Begonia with narrow distributions, which are described and illustrated here: Begoniadelicata Gregório & J.A.S. Costa, sp. nov. is a herb restricted to the region of the Recôncavo; Begoniaelianeae Gregório & J.A.S. Costa, sp. nov. is a shrub endemic to the Atlantic forest of the ...
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ABSTR;ZCT. Stigmaphyllon hispidum, a new species of Malpighiaceae, is described from Bahia, Brazil, where it was collected in a remnant of coastal forest, a vegetation type called Mata Atlantica. Its floral structure and adaxial laminar vesture are most similar to those of S. gayanum, an endemic of the region of Rio de Janeiro. The dense axial vesture, composed of simple basifixed hairs mixed w...
متن کاملAlkaloidal components in the poisonous plant, Ipomoea carnea (Convolvulaceae).
Natural intoxication of livestock by the ingestion of Ipomoea carnea (Convolvulaceae) sometimes occurs in tropical regions of the world. Polyhydroxylated alkaloids were isolated from the leaves, flowers, and seeds of the poisonous plant and characterized. Chromatographic separation of the leaf extract resulted in the isolation of swainsonine (1), 2-epi-lentiginosine (2), calystegines B(1) (3), ...
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ژورنال
عنوان ژورنال: Kew Bulletin
سال: 2017
ISSN: 0075-5974,1874-933X
DOI: 10.1007/s12225-017-9678-5