Revision of the Aechmea multiflora complex (Bromeliaceae)
نویسندگان
چکیده
منابع مشابه
Leaf anatomy and its contribution to the systematics of Aechmea subgenus Macrochordion (de Vriese) Baker (Bromeliaceae).
The leaf anatomy of the species Aechmea subgenus Macrochordion was analyzed to obtain valuable data on their taxonomic delimitation and to identify anatomical adaptations to their respective habitats and habits. All leaves of these species are hypostomatic, and present: peltate trichomes on both surfaces; stomata sunk in epidermal depressions; small epidermal cells with thick walls and inclusio...
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Aerial parts of 38 taxa, distributed in 21 genera and all three subfamilies of the Bromeliaceae have been examined for the presence of betaines. Glycinebetaine and trigonelline were isolated from all the plants studied, although the yields of both compounds were low. For glycinebetaine, values (based upon dry weight) varied from 0.0004% for Pitcairnia corallina to 0.087% for Tillandsia usneoide...
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Chromosome-Numbers in Bromeliaceae
Eighty-three chromosome counts are reported for 72 taxa of the Bromeliaceae. Fifty-eight of these counts are the first known chromosome number reports for their respective taxa. A model of chromosomal evolution in the Bromeliaceae (n = 25) is presented. The model is parsimonious and consistent with existing data on meiotic chromosome numbers within the family and in the closely related Vellozia...
متن کاملLignans of Rosa multiflora roots.
Five known lignans, (+)-pinoresinol (1), (+)-8-hydroxypinoresinol (2), (-)-dehydrodiconiferyl alcohol (3), (+)-trans-dehydrodiconiferyl alcohol (4), and (-)-olivil (5), were isolated from the roots of Rosa multiflora for the first time. Their structures were determined using spectroscopic data.
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 2003
ISSN: 1095-8339,0024-4074
DOI: 10.1046/j.1095-8339.2003.00202.x