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Merwilla Lazulina
''Merwilla'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),Asparagales: Scilloideae, ''Angiosperm Phylogeny Website'', retrieved 2014-02-25 It is distributed in southern Africa, from Zimbabwe to South Africa. This genus is named after the botanist Frederick Ziervogel Van der Merwe (1894–1968), who worked on this group. List of South African plant botanical authors#V Description Species of ''Merwilla'' grow from relatively large bulbs, the upper part of which is usually above ground. The bulbs have light yellow to gray tunics. Plants have broad leaves. The flowers are borne in a raceme. Each flower has six blue tepals, forming a star shape. The stamens have white filaments which are joined at the base and small anthers. The oblong seeds are brownish when dry, paler when fresh. The seed colour distinguishes ''Merwilla'' from related genera, which have glossy black or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merwilla Plumbea
''Merwilla plumbea'' is a bulb-forming perennial herb in the small genus ''Merwilla ''Merwilla'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),Asparagales: Scilloideae, ''Angiosperm Phylogeny Website'', retrieved 20 ...''. Two subspecies are recognized: *''Merwilla plumbea'' subsp. ''kraussii'' (Baker) J.C.Manning, syn. ''Scilla kraussii'' *''Merwilla plumbea'' subsp. ''plumbea'', syn. ''Scilla natalensis'' References PlantZAfrica Scilloideae {{Asparagaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tepal
A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very similar appearance), as in ''Magnolia'', or because, although it is possible to distinguish an outer whorl of sepals from an inner whorl of petals, the sepals and petals have similar appearance to one another (as in ''Lilium''). The term was first proposed by Augustin Pyramus de Candolle in 1827 and was constructed by analogy with the terms "petal" and "sepal". (De Candolle used the term ''perigonium'' or ''perigone'' for the tepals collectively; today, this term is used as a synonym for ''perianth''.) p. 39. Origin Undifferentiated tepals are believed to be the ancestral condition in flowering plants. For example, '' Amborella'', which is thought to have separated earliest in the evolution of flowering plants, has flowers with undiffer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merwilla Lazulina
''Merwilla'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),Asparagales: Scilloideae, ''Angiosperm Phylogeny Website'', retrieved 2014-02-25 It is distributed in southern Africa, from Zimbabwe to South Africa. This genus is named after the botanist Frederick Ziervogel Van der Merwe (1894–1968), who worked on this group. List of South African plant botanical authors#V Description Species of ''Merwilla'' grow from relatively large bulbs, the upper part of which is usually above ground. The bulbs have light yellow to gray tunics. Plants have broad leaves. The flowers are borne in a raceme. Each flower has six blue tepals, forming a star shape. The stamens have white filaments which are joined at the base and small anthers. The oblong seeds are brownish when dry, paler when fresh. The seed colour distinguishes ''Merwilla'' from related genera, which have glossy black or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merwilla Dracomontana
''Merwilla'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),Asparagales: Scilloideae, ''Angiosperm Phylogeny Website'', retrieved 2014-02-25 It is distributed in southern Africa, from Zimbabwe to South Africa. This genus is named after the botanist Frederick Ziervogel Van der Merwe (1894–1968), who worked on this group. List of South African plant botanical authors#V Description Species of ''Merwilla'' grow from relatively large bulbs, the upper part of which is usually above ground. The bulbs have light yellow to gray tunics. Plants have broad leaves. The flowers are borne in a raceme. Each flower has six blue tepals, forming a star shape. The stamens have white filaments which are joined at the base and small anthers. The oblong seeds are brownish when dry, paler when fresh. The seed colour distinguishes ''Merwilla'' from related genera, which have glossy black or ... [...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] |
World Checklist Of Selected Plant Families
The World Checklist of Selected Plant Families (usually abbreviated to WCSP) is an "international collaborative programme that provides the latest peer reviewed and published opinions on the accepted scientific names and synonyms of selected plant families." Maintained by the Royal Botanic Gardens, Kew, it is available online, allowing searches for the names of families, genera and species, as well as the ability to create checklists. The project traces its history to work done in the 1990s by Kew researcher Rafaël Govaerts on a checklist of the genus ''Quercus''. Influenced by the Global Strategy for Plant Conservation, the project expanded. , 173 families of seed plants were included. Coverage of monocotyledon families is complete; other families are being added. There is a complementary project called the International Plant Names Index (IPNI), in which Kew is also involved. The IPNI aims to provide details of publication and does not aim to determine which are accepted spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scilla
''Scilla'' () is a genus of about 30 to 80 species of bulb-forming perennial herbaceous plants in the family Asparagaceae, subfamily Scilloideae. Sometimes called the squills in English, they are native to woodlands, subalpine meadows, and seashores throughout Europe, Africa and the Middle East. A few species are also naturalized in Australasia and North America. Their flowers are usually blue, but white, pink, and purple types are known; most flower in early spring, but a few are autumn-flowering. Several ''Scilla'' species are valued as ornamental garden plants. Taxonomy Species of ''Scilla'' have been known since classical antiquity, being described by both Greek (Theophrastus (371–287 BC) and Discorides (40–90 AD)) and Roman (Pliny (23–79 AD)) writers. Theophrastus described ''Scilla hyacinthoides'' (''skilla''), and more briefly '' S. autumnalis'' and '' S. bifolia'' in his ''Historia plantarum'', where he mentions "those of squill" (σκῐ́λ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Speta
Franz Speta (22 December 1941 – 5 December 2015) was an Austrian botanist. He specialized in bulbous plants, especially the Hyacinthaceae. Career Speta worked as an apprentice for a clerk. He then studied at the University of Vienna in the Department of Botany and Zoology. He wrote among professors such as Lothar Geitler and Tschermak Woess about the "evolution and karyology of elaiosomes to fruit and seeds." In 1972, he received a Ph.D. From 1970, he was a research associate at the Upper Austrian Provincial Museum Linz, initially as Head of botany and invertebrates, from 1985 as director deputy of the National Museum and 1990 to 1991 as interim director. From 1993 to 2003 he was head of the newly founded Biology Centre of the National Museum. In 1982, he received the venia legendi of Systematic Botany at the University of Salzburg. In 1994, he became the Councilor appointed. Research The research focus of Speta was the bulbous plants, especially the Hyacinthaceae focusing Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains ''sporangium, microsporangia''. Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle area of the anther. The sterile tissue between the lobes is called the connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The stamens in a flower are collectively called the androecium. The androecium can consist of as few as one-half stamen (i.e. a single locule) as in ''Canna (plant), Canna'' species or as many as 3,482 stamens which have been counted in the saguaro (''Carnegiea gigantea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raceme
A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. Examples of racemes occur on mustard (genus ''Brassica'') and radish (genus ''Raphanus'') plants. Definition A ''raceme'' or ''racemoid'' is an unbranched, indeterminate type of inflorescence bearing pedicellate flowers (flowers having short floral stalks called ''pedicels'') along its axis. In botany, an ''axis'' means a shoot, in this case one bearing the flowers. In indeterminate inflorescence-like racemes, the oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. A plant that flowers on a showy raceme may have this reflected in its scientific name, e.g. the species ''Cimicifuga racemosa''. A compou ... [...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] |
List Of South African Plant Botanical Authors
List of authors of South African botanical taxa is a list of authors who have named South African plants and the standard abbreviations used for those authors in the botanical literature. The entry for each author is given on a single line showing their name, dates and other names by which they have been known. Following this comes a list of the major groups they have worked on, separated by commas, and finally the standard form for their name (in bold). The major groups are *S - Spermatophytes/Phanerogams (flowering plants and gymnosperms) *M - Fungi and Lichens (Mycology) *A - Algae *P - Pteridophytes *B - Bryophytes *F - Fossils *L - Pre-Linnaean taxonomy, Linnaean (from ') *C - Cryptogamic (from ') The dates given are those of birth and death where one or both are available. If neither is known, a date on which the author is known to have published a name (usually the earliest if more than one is known) is given preceded by 'fl.' (''floruit''). See also * List of botani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
