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Reboulia
''Reboulia hemisphaerica'', the hemisphaeric liverwort or small mushroom-headed liverwort, is the only species of liverwort in the genus ''Reboulia''. A possible second species ''Reboulia queenslandica'' (Stephani) M. Hicks was published in 1992, but it was later determined to be a polyploid cross between two varieties of ''R. hemisphaerica'', so not a distinct species. Subsequent lists and publications do not recognize it as distinct. Riccardin C Riccardin C is a macrocyclic bis(bibenzyl). It is a secondary metabolite isolated from the Siberian cowslip subspecies '' Primula veris subsp. macrocalyx'', in '' Reboulia hemisphaerica'' and in the Chinese liverwort '' Plagiochasma intermedium'' ... is a phenolic cyclic bibenzyl secondary metabolite isolated from ''R. hemisphaerica'', as is marchantinquinone. References External links * * Marie L. Hicks. 2004. ''Bryophyte Flora of North America'' Reboulia Aytoniaceae Marchantiales genera Monotypic bryophyte genera {{Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aytoniaceae
Aytoniaceae is a family of liverworts in the order Marchantiales. Genera * ''Asterella'' Palisot De Beauvisage 1805 non Saccardo 1891 non Hara 1936 non Sollas 1886 * '' Cryptomitrium'' Austin ex Underwood 1884 * ''Mannia'' Corda 1829 * '' Plagiochasma'' Lehmann & Lindenberg 1832 nom. cons. non Pomel 1883 * ''Reboulia ''Reboulia hemisphaerica'', the hemisphaeric liverwort or small mushroom-headed liverwort, is the only species of liverwort in the genus ''Reboulia''. A possible second species ''Reboulia queenslandica'' (Stephani) M. Hicks was published in 1992 ...'' Raddi 1818 nom. cons. References External links Liverwort families {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marchantiales Genera
Marchantiales is an order of thallose liverworts (also known as "complex thalloid liverworts") that includes species like ''Marchantia polymorpha'', a widespread plant often found beside rivers, and '' Lunularia cruciata'', a common and often troublesome weed in moist, temperate gardens and greenhouses. As in other bryophytes, the gametophyte generation is dominant, with the sporophyte existing as a short-lived part of the life cycle, dependent upon the gametophyte. The genus ''Marchantia'' is often used to typify the order, although there are also many species of '' Asterella'' and species of the genus ''Riccia'' are more numerous. The majority of genera are characterized by the presence of (a) special stalked vertical branches called archegoniophores or carpocephala, and (b) sterile cells celled elaters inside the sporangium. Phylogeny (extant Marchantiales) Based on the work by Villarreal et al. 2015 Phylogeny (extant and extinct Marchantiales) Extinct complex thallo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riccardin C
Riccardin C is a macrocyclic bis(bibenzyl). It is a secondary metabolite isolated from the Siberian cowslip subspecies '' Primula veris subsp. macrocalyx'', in '' Reboulia hemisphaerica'' and in the Chinese liverwort '' Plagiochasma intermedium''. In 2005, the compound was prepared by total synthesis together with the strained compound cavicularin Cavicularin is a natural phenolic secondary metabolite Secondary metabolites, also called specialised metabolites, toxins, secondary products, or natural products, are organic compounds produced by any lifeform, e.g. bacteria, fungi, animal ....Kostiuk, S. L., Woodcock, T., Dudin, L. F., Howes, P. D. and Harrowven, D. C. (2011), Unified Syntheses of Cavicularin and Riccardin C: Addressing the Synthesis of an Arene Adopting a Boat Configuration. Chemistry - A European Journal, 17: 10906–10915. References {{Dihydrostilbenoid Dihydrostilbenoids Macrocycles Cyclophanes Heterocyclic compounds with 5 rings Oxygen heteroc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giuseppe Raddi
Giuseppe Raddi (9 July 1770 in Florence, Italy – 6 September 1829 the island of Rhodes) was an Italian botanist and curator at the Museum of Natural History of Florence. He was among the first Europeans to explore and document the flora of South and Central America. Biography Raddi was born in a poor family to Stefano and Orsola Pandolfini. He worked for a while in a spicery where he got interested in medicinal plants. In 1786 he met Ottaviano Targioni Tozzetti (1755–1826) who introduced him to Gaetano Savi (1769–1844). Raddi took an interest in the seedless plants and the fungi around Florence. He also learned Latin and other languages and began to read works on science and exploration. In 1785 he became an assistant to Attilio Zuccagni who took care of the Botanical Garden of Florence and later obtained employment in the Museum of Natural History of Florence. Raddi took a political position against Napoleon Bonaparte and faced opposition from Count Gerolamo de’ Bardi, a ... [...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] |
Liverwort
The Marchantiophyta () are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information. It is estimated that there are about 9000 species of liverworts. Some of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids. Leafy liverworts also differ from most (but not all) mosses in that their leaves never have a costa (present in many mosses) and may bear marginal cilia (very rare in mosses). Other differences are not universal for all mosses and liverworts, but the occurrence of leaves arranged in three ranks, the presence of deep lobes or segmented leaves, or a lack of clearly diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyploid
Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei ( eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
