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Clepsis Persicana
''Clepsis persicana'', the white triangle tortrix or the green needleworm, is a species of moth of the family Tortricidae. It is found in North America, where it has been recorded from Alaska and British Columbia to Newfoundland and south to Virginia and west to California. The habitat consists of coniferous and mixed coniferous forests. The larva is slender and very active, with yellow head and wide, indistinct greyish stripes on the body. In Ontario, larvae have been collected in late May and June. Measures to control spruce needle worms have not been needed. The length of the forewings is 8.5-10.5 mm for males and 10–11 mm for females. The forewings are orange basally, becoming darker and purplish towards the termen, which is pale. Adults are on wing from June to August in one generation per year. The larvae have been recorded feeding on a wide range of deciduous and coniferous trees, including '' Acer'' (including ''Acer negundo''), ''Osmorhiza'', '' Solidago'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asa Fitch
Asa Fitch (February 24, 1809 – April 8, 1879) was a natural historian and entomologist from Salem, New York. His early studies were of both natural history and medicine, which he studied at the newly formed Rensselaer Polytechnic Institute, graduating in 1827. However, in 1838 he decided to start studying agriculture and entomology. In 1838 he began to collect and study insects for New York state. In 1854 he became the first professional entomologist of New York State Agricultural Society (commissioned by the State of New York). This made him the first occupational entomologist in the United States. His vast studies of many insects helped scientists to solve some of the problems of crop damage caused by insects. Many of his notebooks are now the property of the Smithsonian Institution. Fitch also discovered the rodent botfly ''Cuterebra emasculator'' in 1856. He died April 8, 1879, in Salem, New York. The Martin–Fitch House and Asa Fitch Jr. Laboratory was added to the Nat ... [...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] |
Fraxinus
''Fraxinus'' (), common name, commonly called ash, is a genus of flowering plants in the olive and lilac family, Oleaceae. It contains 45–65 species of usually medium to large trees, mostly deciduous, though a number of Subtropics, subtropical species are evergreen. The genus is widespread across much of Europe, Asia, and North America. The leaf, leaves are opposite leaves, opposite (rarely in Whorl (botany), whorls of three), and mostly pinnate, pinnately compound, though simple in a few species. The seeds, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara (fruit), samara. Some ''Fraxinus'' species are Dioecy, dioecious, having male and female flowers on separate plants but sex in ash is expressed as a continuum between male and female individuals, dominated by unisexual trees. With age, ash may change their sexual function from predominantly male and hermaphrodite towards femaleness ; if grown as an ornamental and both sexes are present, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comptonia Peregrina
''Comptonia peregrina'' is a species of flowering plant in the family Myricaceae. It is the only extant (living) species in the genus ''Comptonia (plant), Comptonia'', although a number of extinct species are placed in the genus. ''Comptonia peregrina'' is native to eastern North America, from southern Quebec, east to Nova Scotia, south to the extreme north of Georgia (U.S. state), Georgia, and west to Minnesota. The common name is sweetfern or sweet-fern (although it is not a fern), or in Quebec, . Etymology The genus ''Comptonia'' is named in honor of Rev. Henry Compton (bishop), Henry Compton (1632-1713), bishop of Oxford. The species name ''peregrina'' literally means ''one that travels''. Compare the plant's Quebec French name, ''comptonie voyageuse'': "traveling comptonia." Description ''Comptonia peregrina'' is a deciduous shrub, growing to tall. The leaf, leaves of the plant are linear to lanceolate, long and broad, with a lobed margin; they give off a sweet odor, es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maianthemum Canadense
''Maianthemum canadense'' (Canadian may-lily, Canada mayflower, false lily-of-the-valley, Canadian lily-of-the-valley, wild lily-of-the-valley,, p.105 two-leaved Solomon's seal) is an understory perennial flowering plant, native to Canada and the north-eastern United States, from Yukon and British Columbia east to Newfoundland, into St. Pierre and Miquelon. It can be found growing in both coniferous and deciduous forests. The plant appears in two forms, either as a single leaf rising from the ground with no fruiting structures or as a flowering/fruiting stem with 2-3 leaves. Flowering shoots have clusters of 12–25 starry-shaped, white flowers held above the leaves. Description Plants grow to tall, arising from branching rhizomes that have roots only at the nodes. Plants may be one-leaved and without fruiting structures (sterile). Fertile, flowering shoots have 2–3 leaves. Leaves Leaf blades are long by wide with a pointed tip. Lowest leaves are usually egg-shaped with two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribes
''Ribes'' is a genus of about 200 known species of flowering plants, most of them native to the temperate regions of the Northern Hemisphere. The various species are known as currants or gooseberries, and some are cultivated for their edible fruit or as ornamental plants. ''Ribes'' is the only genus in the family Grossulariaceae. Description ''Ribes'' species are medium shrublike plants with marked diversity in strikingly diverse flowers and fruit. They have either palmately lobed or compound leaves, and some have thorns. The sepals of the flowers are larger than the petals, and fuse into a tube or saucer shape. The ovary is inferior, maturing into a berry with many seeds. Taxonomy ''Ribes'' is the single genus in the Saxifragales family Grossulariaceae. Although once included in the broader circumscription of Saxifragaceae ''sensu lato'', it is now positioned as a sister group to Saxifragaceae ''sensu stricto''. Subdivision First treated on a worldwide basis in 1907, the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frasera Fastigiata
''Frasera fastigiata'' (syn. ''Swertia fastigiata'') is a species of flowering plant in the gentian family known by the common name clustered green gentian. It is native to the northwestern United States, where it grows in meadows and other mountain habitat. It is a perennial herb producing a single stem which grows erect and often exceeds a meter in height. The basal leaves have oval or spoon-shaped blades up to 30 centimeters long by 10 wide. Leaves higher on the stem may be smaller and narrower. Some of the leaves have white margins. The inflorescence is a dense panicle atop the stem, sometimes interrupted into a series of clusters of flowers. Each flower has a corolla of four pointed lobes each roughly a centimeter long. They are greenish, often tinged with yellow or blue. There are four stamens tipped with large anthers and a central ovary The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frasera
''Frasera'', the green gentians, is a genus in the gentian family, native to North America and named for John Fraser, a Scottish botanist and colleague of Thomas Walter.The Frasera (Walter, 1795) were named for John Fraser. (Linn. 4-Tetrandria, i-Moniogynia, allied to Chironia.) ''See'', Card, H.H.A revision of Genus Frasera ''Annals of the Missouri Botanical Garden'', April 1931, 18(2):245-282 at 245. Accessed 2 August 2012. ''And ref'' Johnson, George William, Johnson's Gardeners' dictionary and cultural instructor, London, A. T. De La Mare printing and publishing co., Ltd., 1916, p. 361. . Accessed 2 August 2012. Taxonomy Historically, ''Frasera'' has sometimes been considered part of ''Swertia ''Swertia'' is a genus in the gentian family containing plants sometimes referred to as the felworts. Some species bear very showy purple and blue flowers. Many members of this genus have medicinal and cultural purposes. Plants of genus '' Fras ...'', but molecular analysis of a num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccinium
''Vaccinium'' is a common and widespread genus of shrubs or dwarf shrubs in the heath family (Ericaceae). The fruits of many species are eaten by humans and some are of commercial importance, including the cranberry, blueberry, bilberry (whortleberry), lingonberry (cowberry), and huckleberry. Like many other ericaceous plants, they are generally restricted to acidic soils. Description The plant structure varies between species: some trail along the ground, some are dwarf shrubs, and some are larger shrubs perhaps tall. Some tropical species are epiphytic. Stems are usually woody. Flowers are epigynous with fused petals, and have long styles that protrude from their bell-shaped corollas. Stamens have anthers with extended tube-like structures called "awns" through which pollen falls when mature. Inflorescences can be axillary or terminal. The fruit develops from an inferior ovary, and is a four- or five-parted berry; it is usually brightly coloured, often being red or bluish wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Canadense
''Rhododendron canadense'', the rhodora or Canada rosebay, is a deciduous flowering shrub that is native to northeastern North America. Classification Today's botanists consider the rhodora to be a distant relative of the other North American members of its genus, but the difference in floral structure did lead 19th century taxonomists to assign the plant its own genus ''Rhodora''. Its closest relative is ''Rhododendron vaseyi'' from the Appalachian Mountains, which differs in having seven stamens. DNA sequencing shows that ''R. vaseyi'' is not related to ''R. canadense'', but more to '' R. albrechtii''. Description It reaches a mature height of 0.5–1.2 m (approximately 1–3 feet). In early spring, it produces pinkish-purple flowers in clusters of 2–6 together; each flower is 2–3 cm (approximately 1 inch) in diameter, with a five-lobed purple corolla. The flowers are unusual in comparison with other species of the genus ''Rhododendron'' found in northeastern Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornus Canadensis
''Cornus canadensis'' is a species of flowering plant in the dogwood family Cornaceae, native to eastern Asia and North America. Common names include Canadian dwarf cornel, Canadian bunchberry, quatre-temps, crackerberry, and creeping dogwood. Unlike its relatives, which are for the most part substantial trees and shrubs, ''C. canadensis'' is a creeping, rhizomatous perennial growing to about tall. Description ''Cornus canadensis'' is a slow-growing herbaceous perennial growing tall, generally forming a carpet-like mat. The above-ground shoots rise from slender creeping rhizomes that are placed deep in the soil, and form clonal colonies under trees. The vertically produced above-ground stems are slender and unbranched. Produced near the terminal node, the leaves are shiny dark green and arranged oppositely on the stem, clustered with six leaves that often seem to be in a whorl because the internodes are compressed. The leaves consist of two types: two larger and four smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corylus
The hazel (''Corylus'') is a genus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family Betulaceae,Germplasmgobills Information Network''Corylus''Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins .Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan . though some botanists split the hazels (with the hornbeams and allied genera) into a separate family Corylaceae. The fruit of the hazel is the hazelnut. Hazels have simple, rounded leaves with double-serrate margins. The flowers are produced very early in spring before the leaves, and are monoecious, with single-sex catkins. The male catkins are pale yellow and long, and the female ones are very small and largely concealed in the buds, with only the bright-red, 1-to-3 mm-long styles visible. The fruits are nuts long and 1–2 cm diameter, surrounded by an involucre (husk) which partly to fully encloses the nut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
