|
Acronychia
''Acronychia'' is a genus of about fifty species of plants in the rue family Rutaceae. The leaves are simple or pinnate, and the flowers bisexual with four sepals, four petals and eight stamens. They have a broad distribution including in India, Malesia, Australia and the islands of the western Pacific Ocean. About twenty species are endemic to Australia. Description Plants in the genus ''Acronychia'' are shrubs or trees with simple or trifoliate leaves arranged in opposite pairs and with oil glands in the leaves. The flowers are arranged in leaf axils either singly or in cymes or panicles. The flowers are bisexual, with four sepals, four petals and eight stamens. The petals are free from each other, as are the stamens. The stigma is small, not differentiated from the style, the fruit is a drupe and the seeds are black. Taxonomy and naming The genus ''Acronychia'' was first formally described in 1775 by Johann Reinhold Forster and Georg Forster in their book ''Characteres Gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Laevis
''Acronychia laevis'', commonly known as hard aspen, glossy acronychia or northern white lilly pilly, is a species of shrub or small tree in the citrus family, and is endemic to eastern Australia. It has simple, elliptical to egg-shaped leaves, groups of creamy white flowers and fleshy, mitre-shaped to spherical fruit. Description ''Acronychia laevis'' is a shrub or small tree that typically grows to a height of . The trunk has fairly smooth, fawn bark with some vertical lines and wrinkles. The leaves are arranged in opposite pairs and are simple, elliptic to egg-shaped with the narrower end towards the base, long and wide on a petiole long. The leaves are shiny green on both sides with a blunt or rounded tip and have oil dots that may be seen using a lens and a bright light. The flowers are mainly arranged in leaf axils in cymes long, each flower on a pedicel long. The four sepals are wide, the four petals creamy white and long and the eight stamens alternate in length. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Acronychioides
''Acronychia acronychioides'', commonly known as white aspen, is a species of small to medium-sized rainforest tree that is endemic to north-eastern Queensland. It has trifoliate leaves with elliptic to egg-shaped leaves on stems that are more or less cylindrical, creamy yellow flowers in large groups in leaf axils and fleshy, pear-shaped or spherical fruit. Description ''Acronychia acronychioides'' is a tree that typically grows to a height of and has more or less cylindrical stems. The leaves are usually trifoliate on a petiole long. The leaflets are elliptic to egg-shaped with the narrower end towards the base, long and wide on a petiolule up to long. The flowers are arranged in large groups long in leaf axils, each flower on a pedicel long. The four sepals are wide, the four petals long and the eight stamens alternate in length. Flowering occurs from April to May and the fruit is a fleshy, pear-shaped to spherical drupe long. Taxonomy White aspen was first formall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Acidula
''Acronychia acidula'', commonly known as lemon aspen or lemon wood, is a species of small to medium-sized rainforest tree that is endemic to Queensland. It has simple, elliptical leaves, small groups of flowers in leaf axils and more or less spherical fruit. The aromatic and acidic fruit is harvested as a bushfood. Description ''Acronychia acidula'' is a tree that typically grows to a height of about . It has simple, elliptical, glabrous leaves that are long and wide on a petiole long. The crushed leaves often have an odour resembling that of mango (''Mangifera indica''). The flowers are arranged in groups long, in leaf axils or between the leaves, each flower on a glabrous pedicel long. The four sepals are long and the four petals long. The eight stamens alternate in length. The fruit is a fleshy, more or less spherical drupe long and the seeds are about long. Taxonomy ''Acronychia acidula'' was first formally described in 1864 by Victorian state botanist Ferdinand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Acuminata
''Acronychia acuminata'', commonly known as Thornton aspen, is a species of shrub or small rainforest tree that is endemic to north-eastern Queensland. It has simple leaves on stems that are more or cylindrical, flowers in small groups in leaf axils and fleshy, oval to spherical fruit. Description ''Acronychia acuminata'' is a tree that typically grows to a height of but flowers when only shrub-sized. It has more or less cylindrical stems and simple, glabous, elliptical leaves long and wide on a petiole long. The flowers are arranged in small groups about long in leaf axils, each flower on a pedicel long. The four sepals are about wide, the four petals about long and the eight stamens alternate in length. Flowering occurs in July and the fruit is a fleshy, oval or spherical drupe long. Taxonomy ''Acronychia acuminata'' was first formally described in 1974 by Thomas Gordon Hartley in the ''Journal of the Arnold Arboretum'' from specimens collected between the Daintree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Aberrans
''Acronychia aberrans'', commonly known as acid berry, lemon aspen, plasticine tree or plasticene aspen, is a species of medium-sized rainforest tree that is endemic to north-eastern Queensland. It has simple leaves on stems that are more or less square in cross-section, flowers in small groups in leaf axils and fleshy, more or less spherical fruit. Description ''Acronychia aberrans'' is a tree that typically grows to a height of . Its leafy stems are more or less square in cross-section, giving the appearance of having been squeezed like plasticine. The leaves are simple, elliptic to egg-shaped with the narrower end towards the base, long and wide on a petiole long. The flowers are arranged in small groups long in leaf axils, each flower on a pedicel long. The sepals are about wide, the four petals long and the eight stamens alternate in length. Flowering occurs from February to April and the fruit is a fleshy, more or less spherical or pear-shaped drupe long. Taxonomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acronychia Pedunculata
''Acronychia pedunculata'' is a large shrub or small tree of the understory, gaps and fringes of low country and lower hill tropical forests of tropical Asia. Description Leaves: elliptic to suboblong, often with tapered base. Twigs more or less angular, glabrous. Flowers: greenish white; I-acillary, corymbose panicles, about across in inflorescences of wide. Flowering: February–April, July–August. The fruits are cream to brownish yellow drupes, slightly angled, in diameter with a short apiculate tip. Leaves and fruits, and other parts of the plant, contain aromatic oils with a resinous scent. In Sri Lanka, the flowering time is February–April and July–August. Distribution South and Southeast Asia from India & Sri Lanka to South China & Taiwan, Indochina, Malesia & Papua New Guinea. Local names * * * Nepali: Paolay * Assamese: Laojan * Tamil & Malayalam: Mutta-nari Uses Extracts of its leaves, bark, stems and fruits are widely used in herbal medicinal ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Style (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals ( biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and slen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Forster
Johann George Adam Forster, also known as Georg Forster (, 27 November 1754 – 10 January 1794), was a German naturalist, ethnologist, travel writer, journalist and revolutionary. At an early age, he accompanied his father, Johann Reinhold Forster, on several scientific expeditions, including James Cook's second voyage to the Pacific. His report of that journey, ''A Voyage Round the World'', contributed significantly to the ethnology of the people of Polynesia and remains a respected work. As a result of the report, Forster, who was admitted to the Royal Society at the early age of twenty-two, came to be considered one of the founders of modern scientific travel literature. After returning to continental Europe, Forster turned toward academia. He taught natural history at the Collegium Carolinum in the Ottoneum, Kassel (1778–84), and later at the Academy of Vilna (Vilnius University) (1784–87). In 1788, he became head librarian at the University of Mainz. Most of his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Gaertner
Joseph Gaertner (12 March 1732 – 14 July 1791) was a German botanist, best known for his work on seeds, ''De Fructibus et Seminibus Plantarum'' (1788-1792). Biography He was born in Calw, and studied in Göttingen under Albrecht von Haller. He was primarily a naturalist, but also worked at physics and zoology. He travelled extensively to visit other naturalists. He was professor of anatomy in Tübingen in 1760, and was appointed professor of botany at St Petersburg in 1768, but returned to Calw in 1770. Gaertner made back cross to convert one species into another. Back cross increases nuclear gene frequency His observations were: 1. Dominance of traits 2. Equal contribution of male and female to the progeny 3. No variation in F1 (first generation of descendants) 4. Large variation in F2 (second generation of descendants) including parental and intermediate types 5. Some of F2 plants had entirely new traits but he was unable to give possible explanation for observ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Kuntze
Carl Ernst Otto Kuntze (23 June 1843 – 27 January 1907) was a German botanist. Biography Otto Kuntze was born in Leipzig. An apothecary in his early career, he published an essay entitled ''Pocket Fauna of Leipzig''. Between 1863 and 1866 he worked as tradesman in Berlin and traveled through central Europe and Italy. From 1868 to 1873 he had his own factory for essential oils and attained a comfortable standard of living. Between 1874 and 1876, he traveled around the world: the Caribbean, United States, Japan, China, South East Asia, Arabian peninsula and Egypt. The journal of these travels was published as "Around the World" (1881). From 1876 to 1878 he studied Natural Science in Berlin and Leipzig and gained his doctorate in Freiburg with a monography of the genus '' Cinchona''. He edited the botanical collection from his world voyage encompassing 7,700 specimens in Berlin and Kew Gardens. The publication came as a shock to botany, since Kuntze had entirely revised taxonom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by 2020". The initial focus was on tropical African Floras, particularly Flora Zambesiaca, Flora of West Tropical Africa and Flora of Tropical East Africa. The database uses the same taxonomical source as Kew's World Checklist of Selected Plant Families, which is the International Plant Names Index, and the World Checklist of Vascular Plants (WCVP). POWO contains 1,234,000 global plant names and 367,600 images. See also *Australian Plant Name Index *Convention on Biological Diversity *World Flora Online *Tropicos Tropicos is an online botanical database containing taxonomic information on plants, mainly from the Neotropical realm (Central, and South America). It is maintained by the Missouri Botanical Garden and was established over 25 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
