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Senecio Inaequidens
''Senecio inaequidens'', known as narrow-leaved ragwort and South African ragwort, is a species of flowering plant in the daisy family Asteraceae. Description ''Senecio inaequidens'' is a perennial chamaephyte up to 1 m in height, often much ramified, with each stem ending in one or a few capitula yellow in colour, forming a loose floral display. A single plant produces 26 to 500 capitula each year, with approximately 90 florets, 74% of them developing a viable achene. The leaves are linear, entire or almost so and without petioles. ''S. inaequidens'' exists as a diploid genotype and a tetraploid cytotype. Initially the diploid ''S. madagascarensis'' and ''S. harveianus'' were assumed to be different species; however molecular analysis showed that they only differ in cytotype. Distribution It is native to Southern Africa, including Lesotho, South Africa, Eswatini, Namibia, Mozambique and Botswana. Habitat In its native habitat ''S. inaequidens'' occurs at elevations from s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Museum Of Geneva
The Natural History Museum of Geneva (in French: ') is a natural history museum in Geneva, Switzerland. Louis Jurine’s collections of Hymenoptera, Coleoptera, Lepidoptera and Hemiptera are held by the museum. Other displays include a collection of intricate glass models of invertebrates by Leopold and Rudolf Blaschka and a living specimen of a two headed tortoise named Janus. The tortoise is considered the mascot of the museum and is one of their main attractions. Notable people who worked for the museum *Aloïs Humbert, naturalist and paleontologist, curator since 1852 *Auguste Louis Brot, malacologist, curator and researcher (1855-1896) * Emil Frey-Gessner, entomologist, conservator of the entomological collections from 1872 *Émile Dottrens, scientific assistant for zoology *François Jules Pictet de la Rive, curator of paleontological collections *Henri Louis Frédéric de Saussure, member of the managing committee *Jules Favre, curator (1915-1952) * Perceval de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytotype
A karyotype is the general appearance of the complete set of metaphase chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyping is the process by which a karyotype is discerned by determining the chromosome complement of an individual, including the number of chromosomes and any abnormalities. A karyogram or idiogram is a graphical depiction of a karyotype, wherein chromosomes are organized in pairs, ordered by size and position of centromere for chromosomes of the same size. Karyotyping generally combines light microscopy and photography, and results in a photomicrographic (or simply micrographic) karyogram. In contrast, a schematic karyogram is a designed graphic representation of a karyotype. In schematic karyograms, just one of the sister chromatids of each chromosome is generally shown for brevity, and in reality they are generally so close together that they look as one on photomicrographs as well u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
