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Broughtonia (plant)
''Broughtonia'' is a genus of orchids (family Orchidaceae) native to the Bahamas and the Greater Antilles. The genus is abbreviated Bro in trade journals. Species As presently constituted (May 2014), ''Broughtonia'' consists of 6 accepted natural species plus one recognized nothospecies. Natural Hybrids The haploid chromosome A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ... number of one species, ''B. sanguinea'', has been determined as ''n'' = 20.page 250. Leonardo P. Felix and Marcelo Guerra: "Variation in chromosome number and the basic number of subfamily Epidendroideae (Orchidaceae)" ''Botanical Journal of the Linnean Society'' 163(2010)234-278, The Linnean Society of London References * Nir, M. Orchidaceae Antillanae, 49–52, 2000. Laeliinae Lae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Brown (botanist, Born 1773)
Robert Brown (21 December 1773 – 10 June 1858) was a Scottish botanist and paleobotanist who made important contributions to botany largely through his pioneering use of the microscope. His contributions include one of the earliest detailed descriptions of the cell nucleus and cytoplasmic streaming; the observation of Brownian motion; early work on plant pollination and fertilisation, including being the first to recognise the fundamental difference between gymnosperms and angiosperms; and some of the earliest studies in palynology. He also made numerous contributions to plant taxonomy, notably erecting a number of plant families that are still accepted today; and numerous Australian plant genera and species, the fruit of his exploration of that continent with Matthew Flinders. Early life Robert Brown was born in Montrose on 21 December 1773, in a house that existed on the site where Montrose Library currently stands. He was the son of James Brown, a minister in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laeliinae Genera
Laeliinae is a Neotropical subtribe including 40 orchid genera, such as ''Brassavola'', ''Laelia'' and ''Cattleya''. The genus ''Epidendrum'' is the largest within this subtribe, containing about 1500 species. This is followed by the genus ''Encyclia'', with over 120 species. List of genera Genera and number of species: *'' Acrorchis'' Dressler, 1 *'' Adamantinia'' Van den Berg & M.W.Chase, 1 *'' Alamania'' La Llave & Lex., 1 *'' Arpophyllum'' La Llave & Lex, 5 *'' Artorima'' Dressler & G.E.Pollard, 1 *''Barkeria'' Knowles & Westc., 17 **Syn. ''Dothilophis'' Raf. *''Brassavola'' R.Br., 17 *'' Broughtonia'' R.Br., 6 **Syn. ''Cattleyopsis'' Lem., ''Laeliopsis'' Lindl. *''Cattleya'' Lindl., 118 **Syn. ''Maelenia'' Dum., ''Sophronitis'' Lindl., ''Sophronia'' Lindl., ''Lophoglottis'' Raf., ''Hoffmannseggella'' H.G.Jones, ''Hadrolaelia'' (Schltr.) Chiron & V.P.Castro, ''Dungsia'' Chiron & V.P.Castro, ''Microlaelia'' (Schltr.) Chiron & V.P.Castro, ''Chironiella'' Braem, ''Brasilael ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laeliinae
Laeliinae is a Neotropical subtribe including 40 orchid genera, such as ''Brassavola'', ''Laelia'' and ''Cattleya''. The genus ''Epidendrum'' is the largest within this subtribe, containing about 1500 species. This is followed by the genus ''Encyclia'', with over 120 species. List of genera Genera and number of species: *'' Acrorchis'' Dressler, 1 *'' Adamantinia'' Van den Berg & M.W.Chase, 1 *'' Alamania'' La Llave & Lex., 1 *'' Arpophyllum'' La Llave & Lex, 5 *'' Artorima'' Dressler & G.E.Pollard, 1 *''Barkeria'' Knowles & Westc., 17 **Syn. ''Dothilophis'' Raf. *''Brassavola'' R.Br., 17 *'' Broughtonia'' R.Br., 6 **Syn. ''Cattleyopsis'' Lem., ''Laeliopsis'' Lindl. *''Cattleya'' Lindl., 118 **Syn. ''Maelenia'' Dum., ''Sophronitis'' Lindl., ''Sophronia'' Lindl., ''Lophoglottis'' Raf., ''Hoffmannseggella'' H.G.Jones, ''Hadrolaelia'' (Schltr.) Chiron & V.P.Castro, ''Dungsia'' Chiron & V.P.Castro, ''Microlaelia'' (Schltr.) Chiron & V.P.Castro, ''Chironiella'' Braem, ''Brasilael ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosome
A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones. These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation. Chromosomes are normally visible under a light microscope only during the metaphase of cell division (where all chromosomes are aligned in the center of the cell in their condensed form). Before this happens, each chromosome is duplicated ( S phase), and both copies are joined by a centromere, resulting either in an X-shaped structure (pictured above), if the centromere is located equatorially, or a two-arm structure, if the centromere is located distally. The joined copies are now called si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haploid
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more chromosome sets. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an organism's life cycle. Half ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broughtonia Sanguinea
''Broughtonia sanguinea'', also known as blood red broughtonia is a plant in the genus '' Broughtonia'', a member of the family Orchidaceae. It was named in 1813 by its first describer, Robert Brown, for 18th century English botanist Arthur Broughton. Description ''Broughtonia sanguinea'' is a species native to Jamaica. Its small, egg-shaped and compact pseudobulbs measure from 2.5 to 5 centimeters in size. On the top of each pseudobulb, there are two long leaves. The leaves have a hard texture and do not break easily, and measures to be about wide. The flower spikes grow to and produces long, clustered red flowers in size. The spikes are able to bloom for several months and the plant is able to bloom twice per year or more. Flowers The flowers are typically red and flower in the late winter to spring and a hint of yellow at the base. The flowers are produced on long arching spikes (inflorescences) that emerge from the top of the pseudobulbs. Each spike bears up sixtee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jamaica
Jamaica (; ) is an island country situated in the Caribbean Sea. Spanning in area, it is the third-largest island of the Greater Antilles and the Caribbean (after Cuba and Hispaniola). Jamaica lies about south of Cuba, and west of Hispaniola (the island containing the countries of Haiti and the Dominican Republic); the British Overseas Territory of the Cayman Islands lies some to the north-west. Originally inhabited by the indigenous Taíno peoples, the island came under Spanish rule following the arrival of Christopher Columbus in 1494. Many of the indigenous people either were killed or died of diseases, after which the Spanish brought large numbers of African slaves to Jamaica as labourers. The island remained a possession of Spain until 1655, when England (later Great Britain) conquered it, renaming it ''Jamaica''. Under British colonial rule Jamaica became a leading sugar exporter, with a plantation economy dependent on the African slaves and later their des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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