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Madrone
''Arbutus'' is a genus of 12 accepted speciesAct. Bot. Mex no.99 Pátzcuaro abr. 2012.''Arbutus bicolor''/ref> of flowering plants in the family Ericaceae, native to temperate regions of the Mediterranean, western Europe, the Canary Islands and North America, and commonly called madrones or strawberry trees. The name ''Arbutus'' was taken by taxonomists from Latin, where it referred to the species now designated ''Arbutus unedo''. Description ''Arbutus'' are small trees or shrubs with red flaking bark and edible red berries.Mabberley, D. J. 1997. ''The plant book: A portable dictionary of the vascular plants''. Cambridge University Press, Cambridge. Fruit development is delayed for about five months after pollination, so that flowers appear while the previous year's fruit are ripening. Peak flowering for the genus is in April with peak fruiting in October. History The smooth wood of the tree is mentioned by Theophrastus in his ''Enquiry into Plants'' (''Historia Plantarum'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Madrone
''Arbutus menziesii'', or Pacific madrone (commonly madrone or madrona in the United States and arbutus in Canada), is a species of broadleaf evergreen tree in the family Ericaceae. It has waxy foliage, a contorted growth habit, and flaky bark. It is native to the western coastal areas of North America, from British Columbia to California. Description ''Arbutus menziesii'' is an evergreen tree about in height, but in the right conditions up to . The trunk is usually about thick. The thin bark is a rich orange-red, and when mature naturally peels away in thin sheets, leaving a greenish, silvery appearance that has a smooth satin sheen. Older trunks are gray-brown near the base. Individual trees can live for over 300 years. The leaves are thick with a waxy texture, elliptical, long and broad, arranged spirally; they are glossy dark green above and a lighter, more grayish green beneath, with an entire margin. The leaves are evergreen, lasting a few years before detaching. So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arbutus Unedo
''Arbutus unedo'', commonly known as strawberry tree, also called madrone, is an evergreen shrub or small tree in the family Ericaceae, native to the Mediterranean Basin and Western Europe. The tree is well known for its fruits, the arbutus berry, which bear some resemblance to the strawberry, hence the common name strawberry tree. However, it is not closely related to true strawberry, strawberries of the genus ''Fragaria''. Its presence in Ireland also lends it the name "Irish strawberry tree", or cain, or cane apple (from the Irish name for the tree, ''caithne''), or sometimes "Killarney strawberry tree". The strawberry tree is the national tree of Italy because of its green leaves, its white flowers and its red berries, colors that recall the Italian flag. The flower of the strawberry tree is the national flower of Italy. Taxonomy ''Arbutus unedo'' was one of the many species described by Carl Linnaeus in Volume One of his landmark 1753 work ''Species Plantarum'', giving it t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of countries and dependencies by area, second-largest country by total area, with the List of countries by length of coastline, world's longest coastline. Its Canada–United States border, border with the United States is the world's longest international land border. The country is characterized by a wide range of both Temperature in Canada, meteorologic and Geography of Canada, geological regions. With Population of Canada, a population of over 41million people, it has widely varying population densities, with the majority residing in List of the largest population centres in Canada, urban areas and large areas of the country being sparsely populated. Canada's capital is Ottawa and List of census metropolitan areas and agglomerations in Canada, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleogene
The Paleogene Period ( ; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period Ma (million years ago) to the beginning of the Neogene Period Ma. It is the first period of the Cenozoic Era, the tenth period of the Phanerozoic and is divided into the Paleocene, Eocene, and Oligocene epochs. The earlier term Tertiary Period was used to define the time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. Paleogene is often abbreviated "Pg", although the United States Geological Survey uses the abbreviation "" for the Paleogene on the Survey's geologic maps. Much of the world's modern vertebrate diversity originated in a rapid surge of diversification in the early Paleogene, as survivors of the Cretaceous–Paleogene extinction event took advantage of empty ecolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xylococcus (plant)
''Xylococcus'' is a Monotypic taxon, monotypic genus of flowering plants in the Ericaceae, heather family which contains the single species ''Xylococcus bicolor'', commonly known as the mission manzanita. It is a Lignotuber, burl-forming, evergreen shrub with leathery leaves and smooth dark reddish bark. From December to February, white to pink urn-shaped flowers adorn the foliage, often attracting hummingbird pollinators. It is native to southern California and the Baja California Peninsula, south to the Sierra de la Giganta. There is growing concern over the future of this plant, referred to as the "queen of the Dwarf forest, elfin forest, " as it may possibly lose up to 88% of its habitat and its wild seedlings are failing to survive more than a full year.Gordon, L., R. W. Halsey, J. E. Keeley, J. P. Rebman, D. Wiens and A. Johanson. (2015) Mission manzanita, queen of the elfin forest: is the species in decline? ''Fremontia'' 43(2), 23-28. Known to and utilized by the indigenou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithostaphylos
''Ornithostaphylos'' is a monotypic plant genus which contains the single species ''Ornithostaphylos oppositifolia'', commonly known as the Baja California birdbush or Baja California manzanita. A large, evergreen shrub in the heather family, this species is near-endemic to northwestern Baja California, with a small population just north of the border in San Ysidro, California. It produces a much-branched inflorescence of white, urn-shaped flowers, and has leathery leaves that appear opposite or in whorls. These characteristics separate it from its close relatives in the region, which include manzanitas ('' Arctostaphylos''), summer holly ('' Comarostaphylis'') and mission manzanita ( ''Xylococcus''). Description A burl-forming, branched shrub to small tree up to 2 m tall, this species has thin, smooth bark that is colored reddish purple when young, sometimes found peeling off. The erect, rigidly branched stems may have minutely wooly hairs. The evergreen, leathery leaves ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comarostaphylis
''Comarostaphylis'' is a genus of shrubs in the heath family native to the Americas from California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ... in the United States to Panama. These are hairy, glandular shrubs to small trees with shreddy bark, often quite similar to their close relatives, the manzanitas. Species: *'' Comarostaphylis arbutoides'' *'' Comarostaphylis discolor'' syn ''C. arguta'' *'' Comarostaphylis diversifolia'' *'' Comarostaphylis glaucescens'' *'' Comarostaphylis lanata'' *'' Comarostaphylis longifolia'' *'' Comarostaphylis mucronata'' *'' Comarostaphylis polifolia'' *'' Comarostaphylis sharpii'' *'' Comarostaphylis spinulosa'' References External links Genus ProfileJepson Manual TreatmentUSDA Plants Profile Arbutoideae Ericaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctous
''Arctous'' is a genus of flowering plants referred to by the common name " bearberry", a name sometimes shared with certain species of the related genus ''Arctostaphylos'', in particular, '' A. uva-ursi''. Although the two genera are related, certain characters, such as deciduous, marcescent leaves, rugose-reticulate venation Venation may refer to: * Venation (botany), the arrangement of veins in leaves * Wing venation, the arrangement of veins in insect wings See also * * Vernation Vernation or leafing is the formation of new leaves or fronds. In plant anatomy, it ..., and finely-toothed leaves are more typical of ''Arctous'' than ''Arctostaphylos''. Three species are accepted. *'' Arctous alpina'' *'' Arctous microphylla'' *'' Arctous rubra'' References Arbutoideae Ericaceae genera Flora of the Holarctic realm Taxa described in 1889 {{Ericaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyletic
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic grouping (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of synapomorphies and symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term received currency during the debates of the 1960s and 1970s accompanying the rise of cladistics, having been coined by zoologist Willi Hennig to apply to well-known taxa like Reptilia (reptiles), which is paraphyletic with respect to birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribosomal DNA
The ribosomal DNA (rDNA) consists of a group of ribosomal RNA encoding genes and related regulatory elements, and is widespread in similar configuration in all domains of life. The ribosomal DNA encodes the non-coding ribosomal RNA, integral structural elements in the assembly of ribosomes, its importance making it the most abundant section of RNA found in cells of eukaryotes. Additionally, these segments include regulatory sections, such as a promoter specific to the RNA polymerase I, as well as both transcribed and non-transcribed spacer segments. Due to their high importance in the assembly of ribosomes for protein biosynthesis, the rDNA genes are generally highly conserved in molecular evolution. The number of copies can vary considerably per species. Ribosomal DNA is widely used for phylogenetic studies. Structure The ribosomal DNA includes all genes coding for the non-coding structural ribosomal RNA molecules. Across all domains of life, these are the structural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
