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Acrosanthes Parviflora
''Acrosanthes'' is a genus of flowering plants in the family ''Aizoaceae''. It is native to Southern Africa. Description Plants in this genus are generally prostrate to sprawling branching perennials with opposite succulent leaves. Inflorescences are a cyme, and flowers have 5 calyx lobes, 8 to many stamen, and an inferior ovary. Fruits are 2 loculed capsules with basal placentation (see "in plants"), and the fruit is xerochastic (fruit dehisces when dry). Their seeds are likely dispersed by ants. Taxonomy This genus was first described by Ecklon and Zeyher in 1837. Species There are 7 recognized species as of 2022: # '' Acrosanthes anceps'' (Thunb.) Sond. # '' Acrosanthes angustifolia'' Eckl. & Zeyh. # '' Acrosanthes decandra'' Fenzl # '' Acrosanthes humifusa'' (Thunb.) Sond. # '' Acrosanthes microphylla'' Adamson # '' Acrosanthes parviflora'' J.C.Manning & Goldblatt # ''Acrosanthes teretifolia ''Acrosanthes'' is a genus of flowering plants in the family ''Aizoace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Friedrich Ecklon
Christian Friedrich Ecklon (17 December 1795 – 1 December 1868) was a Danish botanical collector and apothecary. Ecklon is especially known for being an avid collector and researcher of plants in South Africa. Biography Ecklon was from Åbenrå, Denmark. He was trained as a pharmacist in Kiel. He first went to South Africa in 1823. During his visit he worked as an apothecary while also looking for plants with medicinal value. Lack of funding and a deteriorating health forced him to live in poor circumstances. When he returned to Europe in 1828, he had collected an extensive herbarium. During his stay in Hamburg from 1833 to 1838, he worked on revising this collection. This herbarium would become the basis for the ''Flora Capensis'' (1860–1865) by his friend, Hamburg botanist Otto Wilhelm Sonder (1812–1881) in collaboration with the Irish botanist William Henry Harvey (1811–1866). The herbarium was later sold to Unio Itineraria, a Württemberg Botanical Society which had be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerochastic
Dehiscence is the splitting of a mature plant structure along a built-in line of weakness to release its contents. This is common among fruits, anthers and sporangia. Sometimes this involves the complete detachment of a part; structures that open in this way are said to be dehiscent. Structures that do not open in this way are called indehiscent, and rely on other mechanisms such as decay or predation to release the contents. A similar process to dehiscence occurs in some flower buds (e.g., ''Platycodon'', ''Fuchsia''), but this is rarely referred to as dehiscence unless circumscissile dehiscence is involved; anthesis is the usual term for the opening of flowers. Dehiscence may or may not involve the loss of a structure through the process of abscission. The lost structures are said to be caducous. Association with crop breeding Manipulation of dehiscence can improve crop yield since a trait that causes seed dispersal is a disadvantage for farmers whose goal is to collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1837
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the abili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrosanthes Teretifolia
''Acrosanthes'' is a genus of flowering plants in the family ''Aizoaceae''. It is native to Southern Africa. Description Plants in this genus are generally Prostrate shrub, prostrate to sprawling branching perennials with Opposite leaves, opposite succulent leaves. Inflorescences are a Cyme (botany), cyme, and flowers have 5 Sepal, calyx lobes, 8 to many stamen, and an inferior ovary. Fruits are 2 loculed capsules with basal placentation (see "in plants"), and the fruit is xerochastic (fruit dehisces when dry). Their seeds are likely dispersed by ants. Taxonomy This genus was first described by Ecklon and Zeyher in 1837. Species There are 7 recognized species as of 2022: # ''Acrosanthes anceps'' (Thunb.) Sond. # ''Acrosanthes angustifolia'' Eckl. & Zeyh. # ''Acrosanthes decandra'' Fenzl # ''Acrosanthes humifusa'' (Thunb.) Sond. # ''Acrosanthes microphylla'' Adamson # ''Acrosanthes parviflora'' J.C.Manning & Goldblatt # ''Acrosanthes teretifolia'' Eckl. & Zeyh. Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrosanthes Parviflora
''Acrosanthes'' is a genus of flowering plants in the family ''Aizoaceae''. It is native to Southern Africa. Description Plants in this genus are generally prostrate to sprawling branching perennials with opposite succulent leaves. Inflorescences are a cyme, and flowers have 5 calyx lobes, 8 to many stamen, and an inferior ovary. Fruits are 2 loculed capsules with basal placentation (see "in plants"), and the fruit is xerochastic (fruit dehisces when dry). Their seeds are likely dispersed by ants. Taxonomy This genus was first described by Ecklon and Zeyher in 1837. Species There are 7 recognized species as of 2022: # '' Acrosanthes anceps'' (Thunb.) Sond. # '' Acrosanthes angustifolia'' Eckl. & Zeyh. # '' Acrosanthes decandra'' Fenzl # '' Acrosanthes humifusa'' (Thunb.) Sond. # '' Acrosanthes microphylla'' Adamson # '' Acrosanthes parviflora'' J.C.Manning & Goldblatt # ''Acrosanthes teretifolia ''Acrosanthes'' is a genus of flowering plants in the family ''Aizoace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placentation
Placentation refers to the formation, type and structure, or arrangement of the placenta. The function of placentation is to transfer nutrients, respiratory gases, and water from maternal tissue to a growing embryo, and in some instances to remove waste from the embryo. Placentation is best known in live-bearing mammals ( theria), but also occurs in some fish, reptiles, amphibians, a diversity of invertebrates, and flowering plants. In vertebrates, placentas have evolved more than 100 times independently, with the majority of these instances occurring in squamate reptiles. The placenta can be defined as an organ formed by the sustained apposition or fusion of fetal membranes and parental tissue for physiological exchange. This definition is modified from the original Mossman (1937) definition, which constrained placentation in animals to only those instances where it occurred in the uterus. In mammals In live bearing mammals, the placenta forms after the embryo implants into t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Ludwig Philipp Zeyher
Karl Ludwig Philipp Zeyher (2 August 1799 Dillenburg, Hessen, Germany – 13 December 1858 Cape Town), was a botanical and insect collector who collected extensively in South Africa. He was the author, with Christian Friedrich Ecklon, of ''Enumeratio Plantarum Africae Australis'' (1835-7), a descriptive catalogue of South African plants. In 1816 Zeyher was apprenticed to his uncle Johann Michael Zeyher who was head gardener at the ducal gardens of Schwetzingen. Here he met Franz Sieber and was talked into a partnership with the aim of collecting and selling natural history specimens - a burgeoning industry in the 19th century. They sailed for Mauritius in August 1822, however Zeyher was left at the Cape while Sieber went on to Mauritius and Australia. On his return in April 1824, Sieber picked up the specimens collected by Zeyher, assuring him of payment in due course. No payment ever materialised and Zeyher became aware that he would be forced to operate on his own. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
