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Venusia Pearsalli
''Venusia pearsalli'', or Pearsall's carpet moth, is a moth in the family Geometridae. The species was first described by Harrison Gray Dyar Jr. in 1906. It is found in western North America, from Alaska, Alberta and British Columbia, through Washington and Oregon to California. The wingspan is about 21 mm. The forewings are pale grey with rows of narrow black lines. Adults are on wing in spring. The larvae feed on '' Acer circinatum'', '' Alnus incana tenuifolia'', '' Alnus rubra'', '' Alnus viridis sinuata'', '' Betula'', '' Cornus nuttalli'', '' Quercus garryana'', ''Crataegus ''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornacea ...'', '' Malus'', '' Populus tremuloides'', '' Populus trichocarpa'' and '' Salix''. References Moths described in 1906 Venusia (mot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrison Gray Dyar Jr
Harrison may refer to: People * Harrison (name) * Harrison family of Virginia, United States Places In Australia: * Harrison, Australian Capital Territory, suburb in the Canberra district of Gungahlin In Canada: * Inukjuak, Quebec, or "Port Harrison", Nunavik region of northern Quebec, Canada * Harrison Lake, a lake in the Lower Mainland region of British Columbia, Canada ** Harrison Hot Springs, resort village in British Columbia, Canada, located on Harrison Lake ** Harrison River, a tributary of the Fraser River and which is the outlet of Harrison Lake ** Harrison Bay (British Columbia), a side water of the river ** Harrison Mills, British Columbia, a locality and former mill town at the mouth of the Harrison River ** Harrison Knob, a prominent hill and important archaeological site adjacent to the mouth of the Harrison River * Harrison Island (Nunavut), Hudson Bay, Nunavut * Harrison Islands, Gulf of Boothia, Nunavut * Harrison Settlement, Nova Scotia In the Philippi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnus Rubra
''Alnus rubra'', the red alder, is a deciduous broadleaf tree native to western North America (Alaska, Yukon, British Columbia, Washington, Oregon, California, Idaho and Montana). Description Red alder is the largest species of alder in North America and one of the largest in the world, reaching heights of . The official tallest red alder (as of 1979) stands tall in Clatsop County, Oregon (US). The trunks range from in diameter. The bark is mottled, ashy-gray and smooth, often colonized by white lichen and moss. The leaves are ovate, long, with bluntly serrated edges and a distinct point at the end; the leaf margin is revolute, the very edge being curled under, a diagnostic character which distinguishes it from all other alders. The leaves turn yellow in the autumn before falling. The male flowers are dangling reddish catkins long in early spring. Female flowers occur in clusters of (3) 4–6 (8). Female catkins are erect during anthesis, but otherwise pendant. They develop i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix
Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions. Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broader-leaved species are referred to as sallow (from Old English ''sealh'', related to the Latin word ''salix'', willow). Some willows (particularly arctic and alpine species) are low-growing or creeping shrubs; for example, the dwarf willow (''Salix herbacea'') rarely exceeds in height, though it spreads widely across the ground. Description Willows all have abundant watery bark sap, which is heavily charged with salicylic acid, soft, usually pliant, tough wood, slender branches, and large, fibrous, often stoloniferous roots. The roots are remarkable for their toughness, size, and tenacity to live, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Populus Trichocarpa
''Populus trichocarpa'', the black cottonwood, western balsam-poplar or California poplar, is a deciduous broadleaf tree species native to western North America. It is used for timber, and is notable as a model organism in plant biology. Description It is a large tree, growing to a height of and a trunk diameter over , which makes it the largest poplar species in the Americas. It is normally fairly short-lived, but some trees may live up to 400 years. A cottonwood in Willamette Mission State Park near Salem, Oregon, holds the national and world records. Last measured in April 2008, this black cottonwood was found to be standing at tall, around, with 527 points. The bark is grey and covered with lenticels, becoming thick and deeply fissured on old trees. The bark can become hard enough to cause sparks when cut with a chainsaw.Ewing, Susan. The Great Alaska Nature Factbook. Portland: Alaska Northwest Books, 1996. The stem is grey in the older parts and light brown in youn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Populus Tremuloides
''Populus tremuloides'' is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen. It is commonly called quaking aspen, trembling aspen, American aspen, mountain or golden aspen, trembling poplar, white poplar, and popple, as well as others. The trees have tall trunks, up to 25 meters (82 feet) tall, with smooth pale bark, scarred with black. The glossy green leaves, dull beneath, become golden to yellow, rarely red, in autumn. The species often propagates through its roots to form large clonal groves originating from a shared root system. These roots are not rhizomes, as new growth develops from adventitious buds on the parent root system (the ortet). ''Populus tremuloides'' is the most widely distributed tree in North America, being found from Canada to central Mexico. It is the defining species of the aspen parkland biome in the Prairie Provinces of Canada and extreme northwest Minnesota. Description Quaking a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malus
''Malus'' ( or ) is a genus of about 30–55 species of small deciduous trees or shrubs in the family Rosaceae, including the domesticated orchard apple, crab apples, wild apples, and rainberries. The genus is native to the temperate zone of the Northern Hemisphere. Description Apple trees are typically talI at maturity, with a dense, twiggy crown. The leaves are long, alternate, simple, with a serrated margin. The flowers are borne in corymbs, and have five petals, which may be white, pink, or red, and are perfect, with usually red stamens that produce copious pollen, and a half-inferior ovary; flowering occurs in the spring after 50–80 growing degree days (varying greatly according to subspecies and cultivar). Many apples require cross-pollination between individuals by insects (typically bees, which freely visit the flowers for both nectar and pollen); these are called self-sterile, so self-pollination is impossible, making pollinating insects essential. A number o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crataegus
''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornaceae)''. Cranbrook Institute of Science and University of Michigan Herbarium, Ann Arbor, Michigan. May-tree,Graves, Robert. ''The White Goddess: A Historical Grammar of Poetic Myth'', 1948, amended and enlarged 1966, New York: Farrar, Straus and Giroux. whitethorn, Mayflower, or hawberry, is a genus of several hundred species of shrubs and trees in the family Rosaceae, native to temperate regions of the Northern Hemisphere in Europe, Asia, North Africa, and North America. The name "hawthorn" was originally applied to the species native to northern Europe, especially the common hawthorn ''C. monogyna'', and the unmodified name is often so used in Britain and Ireland. The name is now also applied to the entire genus and to the related Asian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Garryana
''Quercus garryana'' is an oak tree species of the Pacific Northwest, with a range stretching from southern California to southwestern British Columbia. It is commonly known as the Oregon white oak or Oregon oak or, in Canada, the Garry oak. It grows from sea level to an altitude of in the northern part of its range, and from in the south of the range in California. The eponymous Nicholas Garry was deputy governor of the Hudson's Bay Company. Description It is typically of medium height, growing slowly to around and occasionally as high as 100 ft, or in shrub form to tall. The trunks grow to thick, exceptionally . The Bark (botany), bark is gray and fissured. It has the characteristic oval profile of other oaks when solitary, but is also known to grow in groves close enough together that crowns may form a canopy. The leaves are deciduous, long and 1–3 inches broad, with 3–7 deep lobes on each side, darker green on top and finely haired below. The flowers are catk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornus Nuttalli
''Cornus nuttallii'', the Pacific dogwood, western dogwood, or mountain dogwood, is a species of dogwood tree native to western North America. Description It is a small to medium-sized deciduous tree, reaching tall, often with a canopy spread of . Its habit varies based on the level of sunlight; in full sun it will have a short trunk with a crown as wide as it is tall, while under a canopy it will have a tapered trunk with a short, slender crown. The trunk attains in diameter. The bark is reddish brown. The branches have fine hairs and the young bark is thin and smooth, becoming scale-like with ridges as it ages. The leaves are opposite, simple, oval, long, and broad. They are green with stiff, appressed hairs on top, and hairier and lighter on the bottom. They turn orange to purplish in autumn. The flowers are individually small and inconspicuous, across, produced in a dense, rounded, greenish-white flower head in diameter; the 4–8 large white 'petals' are ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula
A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species. They differ from the alders (''Alnus'', another genus in the family) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnus Viridis
''Alnus alnobetula'' is a common tree widespread across much of Europe, Asia, and North America. Many sources refer to it as ''Alnus viridis'', the green alder, but botanically this is considered an illegitimate name synonymous with ''Alnus alnobetula'' subsp. ''fruticosa''. Description It is a large shrub or small tree tall with smooth grey bark even in old age. The leaves are shiny green with light green undersurfaces, ovoid, long and 2–6 cm broad. The flowers are catkins, appearing late in spring after the leaves emerge (unlike other alders which flower before leafing out); the male catkins are pendulous, 4–8 cm long, the female catkins 1 cm long and 0.7 cm broad when mature in late autumn, in clusters of 3–10 on a branched stem. The seeds are small, long, light brown with a narrow encircling wing. The roots of ''Alnus viridis subsp. sinuata'' have nitrogen-fixing nodules. A study in Alaska showed that Sitka alder seedlings were able to invade coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnus Incana
''Alnus incana'', the grey alder or speckled alder, is a species of multi-stemmed, shrubby tree in the birch family, with a wide range across the cooler parts of the Northern Hemisphere. Tolerant of wetter soils, it can slowly spread with runners and is a common sight in swamps and wetlands. It is easily distinguished by its small cones, speckled bark and broad leaves. Description It is a small- to medium-sized tree tall with smooth grey bark even in old age, its life span being a maximum of 60 to 100 years. The leaves are matte green, ovoid, long and broad. The flowers are catkins, appearing early in spring before the leaves emerge, the male catkins pendulous and long, the female catkins long and one cm broad when mature in late autumn. The seeds are small, long, and light brown with a narrow encircling wing. The grey alder has a shallow root system, and is marked not only by vigorous production of stump suckers, but also by root suckers, especially in the northern par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
