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Meadowrue
''Thalictrum'' () is a genus of 120-200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow-rue is a common name for plants in this genus. ''Thalictrum'' is a taxonomically difficult genus with poorly understood species boundaries; it is in need of further taxonomic and field research for clarification. Despite their common name of "meadow-rue", ''Thalictrum'' species are not closely related to the true rue (family Rutaceae), but resemble its members in having compound leaves twice or thrice divided. Description Meadow-rue leaves are alternate, bipinnately compound, and commonly glaucous blue-green in colour. The flowers are small and apetalous (no petals), but have numerous long stamens, often brightly white, yellow, pink or pale purple, and are produced in conspicuous dense inflorescences. In some species (e.g. '' T. chelidonii'', '' T. tuberosum''), the sepals are large, brightly coloured and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalictrum Flavum
''Thalictrum flavum'', known by the common names common meadow-rue, poor man's rhubarb, and yellow meadow-rue,Peder Skou is a flowering plant species in the family (biology), family Ranunculaceae. It is a native plant, native to Caucasus and Russia (Siberia). Growing to tall by broad, it is an herbaceous plant, herbaceous perennial plant, perennial producing clusters of fluffy yellow fragrant flowers in summer. Description ''Thalictrum flavum'' has fibrous roots,Samuel F. Gray and wedge-shaped, dark green leaves, with a paler green underneath; they are divided into multiple sections. It blooms between June and August. The flowers are composed of short sepals and longer, erect stamens. The sepals are actually white, but the multiple erect, yellow stamens, give the flower a yellow appearance. Later, three fruits are formed from each flower head. Phytochemistry The plant contains an enzyme called pavine ''N''-methyltransferase, which modifies a variety of benzylisoquinoline alka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Range
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and environmental conditions, though this is not always so. Killer whales (orcas) are among the most well-known cosmopolitan species on the planet, as they maintain several different resident and transient (migratory) populations in every major oceanic body on Earth, from the Arctic Circle to Antarctica and every coastal and open-water region in-between. Such a taxon (usually a species) is said to have a ''cosmopolitan'' distribution, or exhibit cosmopolitanism, as a species; another example, the rock dove (commonly referred to as a 'pigeon'), in addition to having been bred domestically for centuries, now occurs in most urban areas around the world. The extreme opposite of a cosmopolitan species is an endemic (native) species, or one found only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloid
Alkaloids are a broad class of natural product, naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large variety of organisms including bacteria, fungus, fungi, Medicinal plant, plants, and animals. They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography. Alkaloids have a wide range of pharmacology, pharmacological activities including antimalarial medication, antimalarial (e.g. quinine), asthma, antiasthma (e.g. ephedrine), chemotherapy, anticancer (e.g. omacetaxine mepesuccinate, homoharringtonine), cholinomimetic (e.g. galantamine), vasodilation, vasodilatory (e.g. vincamine), Antiarrhythmic agent, antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and anti-diabetic, antihyperglycemic activities (e.g. berb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Setaceous Hebrew Character
The setaceous Hebrew character (''Xestia c-nigrum'') is a moth of the family Noctuidae. The species was first described by Carl Linnaeus in his 1758 10th edition of ''Systema Naturae''. It is found in the Palearctic realm. It is a common species throughout Europe and North Asia and Central Asia, South Asia, China, Japan and Korea. It is also found in North America, from coast to coast across Canada and the northern United States to western Alaska. It occurs in the Rocky Mountains from Montana to southern Arizona and New Mexico. In the east, it ranges from Maine to North Carolina. It has recently been recorded in Tennessee. The forewings of this species are reddish brown with distinctive patterning towards the base: a black mark resembling the Hebrew letter ''nun'' (), thus inspiring the common name, with a pale cream-coloured area adjacent to this mark. The hindwings are cream coloured. "Setaceous", meaning "having bristles", refers to the hairs on the top of the thorax and fri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidoptera
Lepidoptera ( ) or lepidopterans is an order (biology), order of winged insects which includes butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organisms, making it the second largest insect order (behind Coleoptera) with 126 family (biology), families and 46 Taxonomic rank, superfamilies, and one of the most widespread and widely recognizable insect orders in the world. Lepidopteran species are characterized by more than three derived features. The most apparent is the presence of scale (anatomy), scales that cover the torso, bodies, large triangular Insect wing, wings, and a proboscis for siphoning nectars. The scales are modified, flattened "hairs", and give butterflies and moths their wide variety of colors and patterns. Almost all species have some form of membranous wings, except for a few that have reduced wings or are wingless. Mating and the laying of eggs is normally performe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva
A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase of their life cycle. A larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. In the case of smaller primitive arachnids, the larval stage differs by having three instead of four pairs of legs. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalictrum Sparsiflorum
''Thalictrum'' () is a genus of 120-200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow-rue is a common name for plants in this genus. ''Thalictrum'' is a taxonomically difficult genus with poorly understood species boundaries; it is in need of further taxonomic and field research for clarification. Despite their common name of "meadow-rue", ''Thalictrum'' species are not closely related to the true rue (family Rutaceae), but resemble its members in having compound leaves twice or thrice divided. Description Meadow-rue leaves are alternate, bipinnately compound, and commonly glaucous blue-green in colour. The flowers are small and apetalous (no petals), but have numerous long stamens, often brightly white, yellow, pink or pale purple, and are produced in conspicuous dense inflorescences. In some species (e.g. '' T. chelidonii'', '' T. tuberosum''), the sepals are large, brightly coloured a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalictrum Dioicum
''Thalictrum dioicum'', the early meadow-rue or quicksilver-weed, is a species of herbaceous plants in the family Ranunculaceae. Plants are typically upright growing woodland natives from Colorado Rocky Mountain forests to central and eastern North America including parts of south eastern Canada. This species has dioecious plants, with male and female flowers on separate plants blooming in early to mid spring. ''Thalictrum dioicum'' grows from 30 to 80 cm tall, from upright caudex, with yellow-gold colored – thick fibrous roots. New caudexes are generated each year by the current years plant and the old caudex withers away in the fall and early spring of the next year. In early spring plants grow, producing glabrous or glandular leaves. both basal and cauline leaves are produced that have long petioles. Leaf blades are 1-4×-ternately compound with leaflets reniform or cordate to obovate or orbiculate in shape. The leaflets are 10–45 mm wide with lobed margins oft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thalictrum Fendleri
''Thalictrum fendleri'' is a species of flowering plant in the Ranunculaceae, buttercup family known by the common name Fendler's meadow-rue. It is named in honor of Augustus Fendler. The plant is native to western North America, including much of the western United States and northern Mexico. It is a common plant found in many types of habitats, including open places to shaded areas in woodlands and forests. It is anemophilous (pollinated via wind action). Description ''Thalictrum fendleri'' is a perennial herb growing erect to tall. The hairless stems are green to purple in color. The leaves have compound blades divided into a few or many segments of varying shapes, often with three lobes, and are borne on long, slender Petiole (botany), petioles. The blades are hairless to slightly fuzzy and glandular. The inflorescence is an upright or arching panicle of flowers. The species is usually Plant sexuality, dioecious, with male and female flowers occurring on separate plants, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anemophily
Anemophily or wind pollination is a form of pollination whereby pollen is distributed by wind. Almost all gymnosperms are anemophilous, as are many plants in the order Poales, including grasses, sedges, and rushes. Other common anemophilous plants are oaks, pecans, pistachios, sweet chestnuts, alders, hops, and members of the family Juglandaceae (hickory or walnut family). Approximately 12% of plants across the globe are pollinated by anemophily, including cereal crops like rice and corn and other prominent crop plants like wheat, rye, barley, and oats. In addition, many pines, spruces, and firs are wind-pollinated. Syndrome Features of the wind-pollination syndrome include a lack of scent production, a lack of showy floral parts (resulting in small, inconspicuous flowers), reduced production of nectar, and the production of enormous numbers of pollen grains. This distinguishes them from entomophilous and zoophilous species (whose pollen is spread by insects and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the south and west by the Pacific Ocean. The region includes Middle America (Americas), Middle America (comprising the Caribbean, Central America, and Mexico) and Northern America. North America covers an area of about , representing approximately 16.5% of Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the list of continents and continental subregions by population, fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in list of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperate
In geography, the temperate climates of Earth occur in the middle latitudes (approximately 23.5° to 66.5° N/S of the Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout the year and more distinct seasonal changes compared to tropical climates, where such variations are often small; they usually differ only in the amount of precipitation. In temperate climates, not only do latitude, latitudinal positions influence temperature changes, but various sea currents, prevailing wind direction, continentality (how large a landmass is) and altitude also shape temperate climates. The Köppen climate classification defines a climate as "temperate" C, when the mean temperature is above but below in the coldest month to account for the persistence of frost. However, some adaptations of Köppen set the minimum at . Continental climate, Continental climates are classified as D and considered to be varie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
