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Ammocharis Longifolia
''Ammocharis longifolia'' is a species of bulbous plant in the family Amaryllidaceae. It has been placed as the only species, ''Cybistetes longifolia'', in the monotypic genus ''Cybistetes''. Description ''Ammocharis longifolia'' is a perennial geophyte with large (100–150 mm) bulbs, 9–14 prostrate leaves, a 13–90 flowered inflorescence, flowers funnel-shaped, ivory or pale to dark pink, tepals connate forming a floral tube. It is distinguished from other species of ''Ammocharis'' by the presence of zygomorphic flowers, as opposed to actinomorphic, and by its seed dispersal mechanism, with a wind blown indehiscent infructescence (fruiting head) that gave it its name. The fruiting head dries rapidly and is shed as a single unit, which the rolls away (tumbles), born by the wind. Another distinguishing feature in the infructescence is the pedicels, which elongate, spread apart, stiffen and ultimately radiate equally in all directions. Taxonomy History The tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammocharis
''Ammocharis'' is a small genus from sub-Saharan Africa, in the family Amaryllidaceae (subfamily Amaryllidoideae) which includes seven species distributed in Africa. The plant grows as above-ground bulb, preferring seasonally wet, hot, sandy soils and full sun. Taxonomy Herbert segregated ''Ammocharis'' from ''Crinum'' in 1821, with two species, ''A. coranica'' and ''A. falcata'' (both originally ''Amaryllis''). He also placed one of Linnaeus' original ''Amaryllis'' species, ''A. longifolia'', in ''Crinum'' as ''C. capense''. This species would also eventually find its way into ''Ammocharis''. In 1847 Roemer placed ''Amaryllis longifolia'' in ''Ammocharis'' as ''Ammocharis longifolfolia'', (Linn.) Roem. without realising it was conspecific with ''Ammocharis falcata''. However many subsequent authors included only the two original species. A major review of the genus was undertaken by Milne-Redhead and Schweickerdt in 1939. In their recircumscription they identified five sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crininae
Crininae is one of four subtribes within the tribe Amaryllideae ( subfamily Amaryllidoideae, family Amaryllidaceae), with a pantropical distribution (''Crinum'') and also sub-Saharan Africa. Description Leaves frequently show an intercalary meristem and are usually fringed with cartilaginous teeth. The leaf apices are also often truncate (cut off). The flowers may be actinomorphic to zygomorphic, with a perigone tube with free stamens. The fruit is indehiscent, irregular, and often rostellate (rosetted). The scape does not abscise (shed) during seed dispersal, with the exception of ''Ammocharis longifolia'' where it detaches at ground level. The seeds also lack an integument, but are endosperm-rich and partially chlorophyllous with cork-covering. Taxonomy Phylogeny Crininae are placed within Amaryllideae as follow: These are phylogenetically related as follows: Subdivision As circumscribed by Meerow ''et al.'' (2001), there were three genera (Species), althou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunsvigia
''Brunsvigia'' is a genus of African flowering plants in the family Amaryllidaceae, subfamily Amaryllidoideae. It contains about 20 species native to southeastern and southern Africa from Tanzania to the Cape Provinces of South Africa. Description ''Brunsvigia'' are perennial, deciduous, temperate, bulbous herbal plants. Most species have subterranean bulbs but they are usually half-exposed in ''B. herrei'' and ''B. josephinae''. Bulbs are tender, usually large (up to 20 cm diameter), winter-growing and summer- dormant, generally flowering in early autumn. Tunics are often thick and cartilaginous, typically brittle and tan-coloured, although they are brown and papery in ''B. josephinae'' and ''B. litoralis''. The leaves are annual; when mature, the leaves are broad and oblong to tongue-shaped. In species with small bulbs – ''B. radula'', ''B. comptonii'', and ''B. namaquana'' – there are just two or three leaves per plant but most other species have at least four leaves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinum
''Crinum'' is a genus of about 180 species of perennial plants that have large showy flowers on leafless stems, and develop from bulbs. They are found in seasonally moist areas, including marshes, swamps, depressions and along the sides of streams and lakes in tropical and subtropical areas worldwide. Description ''Crinum'' leaves are basal, typically long and strap-shaped, with colors ranging from light green to green. Cytological studies have shown some 27 species of Crinum to be diploid with a normal chromosome count of 2n = 22. Abilio Fernandes found that the Orange River '' Crinum bulbispermum'' had a count of 2n = 66, and some desert '' Crinum macowanii'' 2n = 44. These polyploid species produce seeds that are often parthenogenetic triploid or diploids, lack vigour and seldom grow to mature plants. Taxonomy , the World Checklist of Selected Plant Families lists 105 species of ''Crinum''. Amongst these are: *''Crinum americanum'' L. – southern swamplily, seven siste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Hermann (botanist)
Paul Hermann (30 June 1646, Halle – 29 January 1695, Leiden) was a German-born physician and botanist who for 15 years was director of the Hortus Botanicus Leiden. Born in Halle, Saxony-Anhalt, Germany, Paul Hermann was the son of Johann Hermann, a well-known organist, and Maria Magdalena Röber, a clergyman's daughter. Hermann studied theology and medicine in Wittenberg and botany in Leipzig. After graduating from Europe's finest medical school, Padua in 1670, he was then engaged by the Dutch East India Company and went to Ceylon (now Sri Lanka) as a Ship's Medical Officer. He was in their employ from 1672 to 1677. During his stay there, he made a scientific collection of this island's plants and other organisms. He was then offered the job at Leiden and took up the Chair of Botany at the University of Leiden in 1679 and took up his residence in 1680 at Leiden where he spent the rest of his professional life. He immediately set to making it the finest botanical garden in Eu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxon
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's Linnaean taxonomy, system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard de Jussieu, Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedicels
In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absence of a pedicel, the flowers are described as sessile. Pedicel is also applied to the stem of the infructescence. The word "pedicel" is derived from the Latin ''pediculus'', meaning "little foot". The stem or branch from the main stem of the inflorescence that holds a group of pedicels is called a peduncle. A pedicel may be associated with a bract or bracts. In cultivation In Halloween types of pumpkin or squash plants, the shape of the pedicel has received particular attention because plant breeders are trying to optimize the size and shape of the pedicel for the best "lid" for a "jack-o'-lantern". Gallery File:Asclepias amplexicaulis.jpg, Long pedicels of clasping milkweed with a single peduncle File:314 Prunus avium.jpg, Cherry p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infructescence
Infructescence (fruiting head) is defined as the ensemble of fruits derived from the ovaries of an inflorescence. It usually retains the size and structure of the inflorescence. In some cases, infructescences are similar in appearance to simple fruits. These are called multiple fruits. One example is the infructescence of ''Ananas'', which is formed from the fusion of the berries with receptacle tissues and bracts. The mature infructescence of a grain, such as wheat or maize, is known as an ear. The infructescence of ''Ficus'' is called a syconium Syconium (plural ''syconia'') is the type of inflorescence borne by figs (genus ''Ficus''), formed by an enlarged, fleshy, hollow receptacle with multiple ovaries on the inside surface. In essence, it is really a fleshy stem with a number of flow .... References Fruit morphology {{botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygomorphic
Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirally arranged. Actinomorphic Most flowers are actinomorphic ("star shaped", "radial"), meaning they can be divided into 3 or more identical sectors which are related to each other by rotation about the center of the flower. Typically, each sector might contain one tepal or one petal and one sepal and so on. It may or may not be possible to divide the flower into symmetrical halves by the same number of longitudinal planes passing through the axis: Oleander is an example of a flower without such mirror planes. Actinomorphic flowers are also called radially symmetrical or regular flowers. Other examples of actinomorphic flowers are the lily (''Lilium'', Liliaceae) and the buttercup (''Ranunculus'', Ranunculaceae). Zygomorphic Zygomorp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floral Tube
In angiosperms, a hypanthium or floral cup is a structure where basal portions of the calyx, the corolla, and the stamens form a cup-shaped tube. It is sometimes called a floral tube, a term that is also used for corolla tube and calyx tube. It often contains the nectaries of the plant. It is present in many plant families, although varies in structural dimensions and appearance. This differentiation between the hypanthium in particular species is useful for identification. Some geometric forms are obconic shapes as in toyon, whereas some are saucer-shaped as in '' Mitella caulescens''. Its presence is diagnostic of many families, including the Rosaceae, Grossulariaceae, and Fabaceae. In some cases, it can be so deep, with such a narrow top, that the flower can appear to have an inferior ovary - the ovary is below the other attached floral parts. The hypanthium is known by different common names in differing species. In the eucalypts, it is referred to as the ''gum nut''; in ros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
