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Showing 1 to 20 of 114 for “"Asteraceae"”.
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Pollination of Basalt Daisy (Erigeron basalticus: asteraceae)
<p>Erigeron basalticus (basalt daisy) is a rare plant occupying a very restricted range of approximately 52 km<sup>2</sup> in only two counties (Kittitas and Yakima) in central Washington State. Growing out of the cracks and crevices of basalt columns, the population of E. basalticus is fragmented …
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A taxonomic revision of the genus pentatrichia (asteraceae)
Abstract provided by author
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A biosystematic study of the Lasthenia californica complex (Asteraceae)
Lasthenia californica DC. ex Lindley is an annual, presumably obligate out crossing species and is the most widespread taxon of the 17 species in this mostly Californian genus. A biosystematic study of this complex has shown that this species is polymorphic in its flavonoid chemistry, …
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Die Testaepidermis der Lactuceae (Asteraceae) – ihre Diversität und systematische Bedeutung
Der Grundgedanke der zur vorliegenden Untersuchung führte, bestand darin, die Strukturen in den Wänden der Testaepidermiszellen repräsentativ für die ganze Tribus Lactuceae mit einem geeigneten, neu zu entwerfenden Präparationsverfahren zu untersuchen und sie damit der Systematik zur Verfügung zu …
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Self-incompatibility in Cosmos atrosanauineus: a rare Mexican endemic species of Asteraceae
… Mexican endemic self-incompatible species of Asteraceae that is now believed to be extinct in the wild. The two known wild C. atrosanguineus collections, made in made in the 19th century, localise the species to the pine-oak mountain forest ecological region in two areas of central Mexico. Its …
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Asteraceae Dumort. nos campos rupestres do Parque Estadual do Itacolomi, Minas Gerais, Brasil
… do levantamento florístico e taxonômico de Asteraceae nos campos rupestres do Parque Estadual do Itacolomi (PEI), localizado nos municípios de Ouro Preto e Mariana em Minas Gerais, bem como da análise dos padrões de distribuição geográfica e similaridade florística com outras áreas de campo …
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In vitro evaluation of the cytotoxic potential of Brickellia cavanillesi (Asteraceae) using HepG2 cells
… (Brickellia cavanillesi), a member of the Asteraceae botanical family is traditionally consumed as an herbal remedy to treat diabetes and other chronic diseases in several underdeveloped countries. However, there is limited data on the potential toxicity or mechanism of action for B. …
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Estudo Farmacognóstico de Vernonia brasiliana (L.) Druce (Asteraceae) e determinação de sua Atividade Biológica
Vernonia brasiliana (L.) Druce Asteraceae, é um arbusto comumente encontrado em áreas ruderais do grande Recife e restos da Mata Atlântica do estado de Pernambuco, sendo vulgarmente conhecida como Tramanhem , guardando parentesco com inúmeros Assa-Peixes do gênero Vernonia. De longa data suas …
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Effects of Management and Population Size on Genetic Diversity of Eggert's Sunflower (HELIANTHUS EGGERTII; ASTERACEAE)
Helianthus eggertii (Asteraceae) is a federally threatened sunflower species that typically grows between open woods and barrens. This species has both sexual and asexual modes of reproduction, which can influence the amount of genetic diversity present within and among populations. Maintaining …
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Molecular Phylogenetic and Biogeographic Study of the Genus Artemisia (Asteraceae), With an Emphasis on Section Absinthium
Artemisia is the largest genus in the tribe Anthemideae and is composed of ecologically, morphologically, and chemically diverse species found primarily throughout the Northern Hemisphere. Delimitation within Artemisia and among allied genera in subtribe Artemisiinae has been difficult, but …
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The evolution of the Afrotemperate-endemic genus Macowania (Asteraceae) in the Drakensberg region of South Africa
The cosmopolitan Asteraceae tribe Gnaphalieae, or paper daisies or everlastings, form a significant component of both the dry and cool temperate floras of southern Africa. Within this tribe exists a small Afrotemperate genus, Macowania, endemic to the grassland biome of South Africa and occurring …
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Species delimitation and speciation process in the Seriphium plumosum L. complex (Gnaphalieae: Asteraceae) in South Africa
The remarkable richness of the Cape Floristic Region (CFR) and the high in situ diversification inferred for the region prompt interest in two key areas: first, to what extent has the true species richness of the Cape been discovered and described, and second, what are the key drivers of …
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The complex foraging strategy of the specialised gallfly Urophora cardui (Diptera: Tephritidae) for host plants (Cirsium arvense, Asteraceae)
Nearly all herbivorous insects in terrestrial ecosystems depend on plants for their survival and reproduction. They dominate terrestrial ecosystems due to species and individual abundance. Interactions between these two groups are thus of a high significance for the analysis and the understanding …
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Systematics of the Relhaniinae (Asteraceae-Gnaphalieae) in southern Africa : geography and evolution in an endemic Cape plant lineage
The Greater Cape Floristic Region (GCFR) houses a flora unique for its diversity and high endemicity. A large amount of the diversity is housed in just a few lineages, presumed to have radiated in the region. For many of these lineages there is no robust phylogenetic hypothesis of relationships, …
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