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Bidens Wiebkei
''Bidens wiebkei'', the Molokaʻi koʻokoʻolau or Wiebke's beggarticks, is a species of flowering plant in the family Asteraceae. It belongs to the genus '' Bidens'', collectively called ''kokoʻolau'' or ''koʻokoʻolau'' in the Hawaiian language. It is found only on Molokaʻi in the Hawaiian Islands. There are three occurrences of the plant remaining, for a total population of fewer than 1000. This is a perennial herb growing erect to a maximum height near one meter. It has compound leaves divided into leaflets and bears clusters of flower heads with yellow ray florets. Its natural habitat types include lowland moist forests and moist shrubland. It is threatened by habitat loss due to the spread of invasive weed An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ...s, bru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
