|
Luina
''Luina'', commonly called silverback, is a small genus of Perennial plant, perennial shrubs in the Senecioneae, groundsel tribe within the Asteraceae, sunflower family. Description These are large, bushy perennials, native to the Pacific Coast of North America (United States and Canada), growing on rock outcrops, cliffs, and talus slopes. Their slender Plant stem, stems are covered with a gray, thick felt. They grow from a stout, branching, woody base, growing into clumps several meters across. The leaves have an alternate arrangement, The leaf shape is lanceolate to ovate. The leaf margins are entire or dentate. The leaves are sessile in ''L. hypoleuca'', but petiolate in ''L. serpentina''. The leaves are glabrous above, but underneath thick with white hairs, giving it a silvery appearance. At the end of each stem there is an inflorescence with generally 4–12, flat-topped clustered flower heads. These are discoid, i.e. they contain only disc flowers and lack ray f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luina Serpentina
''Luina'', commonly called silverback, is a small genus of perennial shrubs in the groundsel tribe within the sunflower family. Description These are large, bushy perennials, native to the Pacific Coast of North America (United States and Canada), growing on rock outcrops, cliffs, and talus slopes. Their slender stems are covered with a gray, thick felt. They grow from a stout, branching, woody base, growing into clumps several meters across. The leaves have an alternate arrangement, The leaf shape is lanceolate to ovate. The leaf margins are entire or dentate. The leaves are sessile in ''L. hypoleuca'', but petiolate in ''L. serpentina''. The leaves are glabrous above, but underneath thick with white hairs, giving it a silvery appearance. At the end of each stem there is an inflorescence with generally 4–12, flat-topped clustered flower heads. These are discoid, i.e. they contain only disc flowers and lack ray flowers. The bracts under the flower head occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luina Hypoleuca
''Luina hypoleuca'', the littleleaf silverback, is a species of the genus '' Luina'' and the family Asteraceae. It grows to in height, its leaves long and white on the underside (hence the specific epithet, meaning 'bottom white'). It flowers between June and October, with yellowish rayless flower heads about long. It is found in North America on open and usually rocky places between elevations of in British Columbia, California, Oregon, and Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o .... References External links *Jepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cacaliopsis Nardosmia
''Cacaliopsis'' is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species ''Cacaliopsis nardosmia'' (formerly ''Cacalia nardosmia''). It is known by the common name silvercrown. USDA PLANTS. It is native to western North America. Description This species is a perennial herb growing from s with a fibrous root system. It has an erect stem reaching about in maximum height. The are alternately arranged, and most are near the base of the stem. The blades have lobes subdivided into toothed segme ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luina Nardosmia
''Cacaliopsis'' is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species ''Cacaliopsis nardosmia'' (formerly ''Cacalia nardosmia''). It is known by the common name silvercrown. USDA PLANTS. It is native to western North America. Description This species is a perennial herb growing from s with a fibrous root system. It has an erect stem reaching about in maximum height. The are alternately arranged, and most are near the base of the stem. The blades have lobes subdivided into toothed segm ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainiera
''Rainiera'' is a monotypic genus of flowering plants in the daisy family, Asteraceae. The single species, ''Rainiera stricta'' , is endemic to the northwestern United States (Oregon and Washington). The genus is part of the tribe Senecioneae, and appears to be most closely related to ''Luina'', another genus of northwestern North America, in which it was once placed. ''Rainiera stricta'' is of conservation concern, with a G2G3 ranking from NatureServe, and is considered to be globally imperiled. It is known by the common name false silverback. Description ''Rainiera stricta'' is an herbaceous perennial with both basal and cauline, alternate, petiolate leaves. It has 30-70 discoid heads arranged in a raceme-like or thyrse-like capitulescence. The disk florets are about 5 per head, and have yellow, sometimes purple-tinged corollas. The cypselae (achenes) are glabrous and have a pappus of white or straw-colored bristles. It is distinguished from ''Luina'' by the having fewer f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainiera Stricta
''Rainiera'' is a monotypic genus of flowering plants in the daisy family, Asteraceae. The single species, ''Rainiera stricta'' , is endemic to the northwestern United States (Oregon and Washington). The genus is part of the tribe Senecioneae, and appears to be most closely related to ''Luina ''Luina'', commonly called silverback, is a small genus of Perennial plant, perennial shrubs in the Senecioneae, groundsel tribe within the Asteraceae, sunflower family. Description These are large, bushy perennials, native to the Pacific Coast ...'', another genus of northwestern North America, in which it was once placed. ''Rainiera stricta'' is of conservation concern, with a G2G3 ranking from NatureServe, and is considered to be globally imperiled. It is known by the common name false silverback. Description ''Rainiera stricta'' is an herbaceous perennial with both basal and cauline, alternate, petiolate leaves. It has 30-70 discoid heads arranged in a raceme-like or thyrse-like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecioneae
Senecioneae is the largest tribe of the Asteraceae, or the sunflower family, comprising over 150 genera and over 3,500 species. Almost one-third of the species in this tribe are placed in the genus '' Senecio''. Its members exhibit probably the widest possible range of form to be found in the entire plant kingdom, and include annuals, minute creeping alpines, herbaceous and evergreen perennials, shrubs, climbers, succulents, trees, and semi-aquatic plants. Plants in this tribe are responsible for more livestock poisonings than all other plants combined. Its members usually contain liver and kidney toxic and carcinogenic unsaturated pyrrolizidine alkaloids in ''Senecio'' and furanoeremophilanes in '' Tetradymia''. A number of species are well known in horticulture. Classification Since the time of Bentham, the "premier systematic botanist of the nineteenth century", considerable efforts have been made to classify and understand the striking morphological diversity in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennials
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth (secondary growth in girth) from trees and shrubs, which are also technically perennials. Perennialsespecially small flowering plantsthat grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as herbaceous perennials. However, depending on the rigours of local climate (temperature, moisture, organic content in the soil, microorganisms), a plant that is a perennial in its native habitat, or in a milder garden, may be treated by a gardener as an annual and planted out every year, from seed, from cuttings, or from divisions. Tomato vines, for example, live several ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon
Oregon () is a state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada. Oregon has been home to many indigenous nations for thousands of years. The first European traders, explorers, and settlers began exploring what is now Oregon's Pacific coast in the early-mid 16th century. As early as 1564, the Spanish began sending vessels northeast from the Philippines, riding the Kuroshio Current in a sweeping circular route across the northern part of the Pacific. In 1592, Juan de Fuca undertook detailed mapping and studies of ocean currents in the Pacific Northwest, including the Oregon coast as well as the strait now bearing his name. Spanish ships – 250 in as many years – would typically not land before reaching Cape M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below 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 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 of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Plant
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth (secondary growth in girth) from trees and shrubs, which are also technically perennials. Perennialsespecially small flowering plantsthat grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as herbaceous perennials. However, depending on the rigours of local climate (temperature, moisture, organic content in the soil, microorganisms), a plant that is a perennial in its native habitat, or in a milder garden, may be treated by a gardener as an annual and planted out every year, from seed, from cuttings, or from divisions. Tomato vines, for example, live several y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Oregon")
