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Hydrangea
''Hydrangea'' ( or ) is a genus of more than 70 species of Flowering plant, flowering plants native plant, native to Asia and the Americas. Hydrangea is also used as the common name for the genus; some (particularly ''Hydrangea macrophylla, H. macrophylla'') are also often called hortensia. The genus was first described from Virginia in North America, but by far the greatest species diversity is in eastern Asia, notably China, Korea, and Japan. Most are shrub, shrubs tall, but some are small trees, and others lianas reaching up to by climbing up trees. They can be either deciduous or evergreen, though the widely Horticulture, cultivated Temperate climate, temperate species are all deciduous. The flowers of many hydrangeas act as natural pH indicators, producing blue flowers when the soil is acidic and pink ones when the soil is alkaline. Etymology ''Hydrangea'' is derived from Ancient Greek language, Greek and means 'water vessel' (from ''húdōr'' "water" + ''ángos'' or ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrangea Macrophylla
''Hydrangea macrophylla'' is a species of flowering plant in the family (biology), family Hydrangeaceae, native plant, native and endemism, endemic to Japan. It is a deciduous shrub growing to tall by or more broad with large heads of pink or blue flowers in summer and autumn. It is currently treated as monotypic, with no subspecies or varieties. Common names include bigleaf hydrangea, and, for particular cultivar groups, the names lacecap hydrangea, mophead hydrangea, and hortensia. It is widely cultivated in many parts of the world in many climates. It is not to be confused with ''Hydrangea aspera, H. aspera'' 'Macrophylla'. Distribution and habitat ''Hydrangea macrophylla'' is endemic to Japan, where it occurs in coastal habitats from Honshu southwards. Natural wild plants, formerly sometimes distinguished as ''H. macrophylla'' var. ''normalis'' E.H.Wilson, have "lacecap" structure flowerheads, with a few large sterile showy bract-like flowers that act as targets for polli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrangea Arborescens
''Hydrangea arborescens'', commonly known as smooth hydrangea or sevenbark, is a species of flowering plant in the family Hydrangeaceae. It is a small- to medium-sized, multi-stemmed, deciduous shrub up to tall that is native to the eastern United States. Description The inflorescence is a corymb up to wide. Showy, sterile flowers are usually absent or if present they are usually less than 1 cm in diameter on the edge of the panicles. Flowering occurs May to July. Fruit is a ribbed, brown capsule about 2 mm long. Many are produced in October and persist through the winter. The leaves are large (8 to 18 cm long), opposite, serrated, ovate, and deciduous. The lower leaf surface is glabrous or with inconspicuous fine hairs, appearing green; trichomes of the lower surface are restricted to the midrib and major veins. The stem bark has a peculiar tendency to peel off in several successive thin layers with different colors, hence the common name "sevenbark". Sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PH Indicator
A pH indicator is a halochromism, halochromic chemical compound added in small amounts to a Solution (chemistry), solution so the pH (acidity or Base (chemistry), basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. Hence, a pH indicator is a Chemical substance, chemical detector for hydronium ions (H3O+) or hydrogen ions (H+) in the Acid-base reaction theories, Arrhenius model. Normally, the indicator causes the color of the solution to change depending on the pH. Indicators can also show change in other physical properties; for example, olfactory indicators show change in their odor. The pH value of a neutral solution is 7.0 at 25°C (Standard conditions for temperature and pressure#Standard laboratory conditions, standard laboratory conditions). Solutions with a pH value below 7.0 are considered acidic and solutions with pH value above 7.0 are basic. Since most naturally occurring Organic compound, organ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floral Color Change
Floral color change occurs in flowers in a wide range of angiosperm taxa that undergo a color change associated with their age, or after successful pollination. History The first written record of the term ''floral color change'' was in 1877 when Charles Darwin (12 February 1809 – 19 April 1882) forwarded a letter from his colleague, naturalist Fritz Müller (31 March 1821 – 21 May 1897) to the British multidisciplinary science journal, ''Nature''. Müller documented the patterns and efficiency of pollination in relation to the floral color change that occurred in ''Lantana'' flowers found in Brazilian forests. It is now understood that floral color change has evolved independently several times and has maintained morphological and physiological differences across taxa. Although this phenomenon was first mentioned over 200 years ago, research on its biological relevance has only occurred within the last few decades. Mechanisms The three major pigments involved in floral c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower
Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, modified leaves; corolla, the petals; androecium, the male reproductive unit consisting of stamens and pollen; and gynoecium, the female part, containing style and stigma, which receives the pollen at the tip of the style, and ovary, which contains the ovules. When flowers are arranged in groups, they are known collectively as inflorescences. Floral growth originates at stem tips and is controlled by MADS-box genes. In most plant species flowers are heterosporous, and so can produce sex cells of both sexes. Pollination mediates the transport of pollen to the ovules in the ovaries, to facilitate sexual reproduction. It can occur between different plants, as in cross-pollination, or between flowers on the same plant or even the same f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrub
A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple Plant stem, stems and shorter height, less than tall. Small shrubs, less than tall are sometimes termed as subshrubs. Many botany, botanical groups have species that are shrubs, and others that are trees and herbaceous plants instead. Some define a shrub as less than and a tree as over 6 m. Others use as the cutoff point for classification. Many trees do not reach this mature height because of hostile, less than ideal growing conditions, and resemble shrub-sized plants. Others in such species have the potential to grow taller in ideal conditions. For longevity, most shrubs are classified between Perennial plant, perennials and trees. Some only last about five years in good conditions. Others, usually larger and more woody, live beyond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytoremediation, Hyperaccumulators
This article covers known hyperaccumulators, accumulators or species tolerant to the following: Aluminium (Al), Silver (Ag), Arsenic (As), Beryllium (Be), Chromium (Cr), Copper (Cu), Manganese (Mn), Mercury (Hg), Molybdenum (Mo), Naphthalene, Lead (Pb), Selenium (Se) and Zinc (Zn). See also: * Hyperaccumulators table – 2: Nickel * Hyperaccumulators table – 3: Cd, Cs, Co, Pu, Ra, Sr, U, radionuclides, hydrocarbons, organic solvents, etc. Hyperaccumulators table – 1 Cs-137 activity was much smaller in leaves of larch and sycamore maple than of spruce A spruce is a tree of the genus ''Picea'' ( ), a genus of about 40 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal ecosystem, boreal (taiga) regions of the Northern hemisphere. ''Picea'' ...: spruce > larch > sycamore maple. References {{DEFAULTSORT:Hyperaccumulators +01 Hyperaccumulators, +01 Pollution control technologies Lists of plants Science-rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viburnum
''Viburnum'' is a genus of about 150–175 species of flowering plants in the moschatel family, Adoxaceae. Its current classification is based on molecular phylogeny. It was previously included in the honeysuckle family Caprifoliaceae. The member species are evergreen or deciduous shrubs or (in a few cases) small trees native throughout the temperate Northern Hemisphere, with a few species extending into tropical montane regions in South America and southeast Asia. In Africa, the genus is confined to the Atlas Mountains. Name The generic name ''Viburnum'' originated in Latin, in which it referred to '' V. lantana''. Description The leaves are opposite, simple, and entire, with toothed or lobed margins. Cool temperate species are deciduous, while most of the warm temperate species are evergreen. Some species have densely hairy shoots and leaves covered in star-shaped hairs. The flowers are produced in corymbs 5–15 cm across. Each flower is white, cream or pink, sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicole-Reine Lepaute
Nicole-Reine Lepaute (; , 5 January 1723 – 6 December 1788), also erroneously known as Hortense Lepaute, was a French astronomer and human computer. Lepaute along with Alexis Clairaut and Jérôme Lalande calculated the date of the return of Halley's Comet. Her other astronomical feats include calculating the 1764 solar eclipse and producing almanacs from 1759 to 1783. She was also a member of the Scientific . The asteroid 7720 Lepaute is named in her honour, as is the lunar crater Lepaute. Early life Nicole-Reine Lepaute was born on 5 January 1723 in the Luxembourg Palace in Paris as the daughter of Jean Étable, valet in the service of Louise Élisabeth d'Orléans. Her father had worked for the royal family for a long time, both in the service of the duchess de Berry and her sister Louise. Louise Elizabeth of Orleans was a widow of Louis of Spain. When her husband died, she returned to Paris and was given part of Luxembourg to live in and to house her staff members. She w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is often based in Latin. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panicle
In botany, a panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are often racemes. A panicle may have determinate or indeterminate growth. This type of inflorescence is largely characteristic of grasses, such as oat and crabgrass, as well as other plants such as pistachio and mamoncillo. Botanists use the term paniculate in two ways: "having a true panicle inflorescence" as well as "having an inflorescence with the form but not necessarily the structure of a panicle". Corymb A corymb may have a paniculate branching structure, with the lower flowers having longer pedicels than the upper, thus giving a flattish top superficially resembling an umbel. Many species in the subfamily Amygdaloideae, such as hawthorns and rowans, produce their flowers in corymbs. up'' Sorbus glabrescens'' co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
