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Euphorbia × Martini
''Euphorbia ''×'' martini'', or Martin's spurge, is a hybrid between two species of flowering plant, ''E. amygdaloides'' × ''E. characias'' subsp. ''characias'' in the spurge family Euphorbiaceae. It was found growing wild in southern France. Growing to tall and broad, it is a dwarf evergreen subshrub with narrow grey-green leaves and in late spring and early summer, sprays of lime green flowers, often with a red or maroon eye. It is useful as a spreading, weed-smothering groundcover. Though hardy down to , it is a Mediterranean plant best grown in a sheltered spot in well-drained soil in full sun. All parts of the plant are toxic if eaten, moreover euphorbias produce an irritant milky sap when cut or broken. Numerous cultivars have been developed for garden use, of which the following have gained the Royal Horticultural Society's Award of Garden Merit:- *'Ascot Rainbow' * 'Helen Robinson' References {{DEFAULTSORT:Euphorbia martini Plant nothospecies Flora of France ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Rouy
Georges Rouy (2 December 1851, Paris – 25 December 1924, Asnières-sur-Seine) was a French botanist who was among the first to identify infraspecific (i.e., below the level of species) taxa, including: subspecies, varieties, and forms. Published works With Julien Foucaud and others, he was author of the ''Flore de France; ou, Description des plantes qui croissent spontanément en France, en Corse et en Alsace-Lorraine'' (Flora of France; descriptions of plants that are native to France, Corsica and Alsace-Lorraine, published in 14 volumes from 1893 to 1913. His other principal works include: * ''Excursion botanique en Espagne'', Spanien Florenwerke, 1881 - Botanical excursion in Spain. * ''Atlas iconographique des plantes rares de France et de Corse'', 1897 - Iconographic atlas of rare plants native to France and Corsica. * ''Revue de botanique systématique et de géographie botanique'', (1903, 1904) - Botanical systematics and phytogeography Phytogeography (from Greek φ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit. The group was formerly called Magnoliophyta. Angiosperms are by far the most diverse group of Embryophyte, land plants with 64 Order (biology), orders, 416 Family (biology), families, approximately 13,000 known Genus, genera and 300,000 known species. They include all forbs (flowering plants without a woody Plant stem, stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants. Angiosperms are distinguished from the other major seed plant clade, the gymnosperms, by having flowers, xylem consisting of vessel elements instead of tracheids, endosperm within their seeds, and fruits that completely envelop the seeds. The ancestors of flowering plants diverged from the commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euphorbia Amygdaloides
''Euphorbia amygdaloides'', the wood spurge, is a species of flowering plant in the family Euphorbiaceae, native to woodland locations in Europe, Turkey and the Caucasus. It is a bushy evergreen perennial, growing to a height of , with dark green slightly hairy leaves about long. The complex green-yellow inflorescence (cyathium), typical of ''Euphorbia'', appears in late spring and early summer. It is among the few plants that thrive in the dry shade of trees, where it is used as groundcover. It spreads rapidly by underground rhizomes and can become invasive, though relatively easy to remove. One form known is ''Euphorbia'' 'Efanthia'. The subspecies ''E. amygdaloides'' subsp. ''robbiae'' (Turrill) Stace, known as Mrs Robb's bonnet, is grown as a garden plant, and has gained the Royal Horticultural Society's Award of Garden Merit. The milky latex Latex is an emulsion (stable dispersion) of polymer microparticles in water. Latices are found in nature, but synthetic latice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euphorbia Characias
''Euphorbia characias'', the Mediterranean spurge is a species of flowering plant in the family Euphorbiaceae typical of the Mediterranean vegetation. It is an upright, compact evergreen shrub growing to tall and wide. Description It has many medium to tall unbranched stems with long narrow leaves, clothed densely in short hair (tomentose), and dark (ssp characias) or yellow (ssp wulfenii) floral nectar glands within the yellow cup-like cyathia, which are borne in large dense spherical to oblong clusters, from spring to early summer. The fruits are smooth densely-hairy capsules. It is a tough plant, capable of resisting long periods of drought. It grows preferably in dry areas, often far away from the water table, both in flat as well as in mountainous terrain. This plant can also resist high salinity. Similar species include E. kotschyana (leaf uppersides shiny) and E. thompsonii (leaves hairy but upper leaves unexpectedly very short). Subspecies Two main subspecies are fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (botany)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evergreen
In botany, an evergreen is a plant which has Leaf, foliage that remains green and functional throughout the year. This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many different species, the unique feature of evergreen plants lends itself to various environments and purposes. Evergreen species There are many different kinds of evergreen plants, including trees, shrubs, and vines. Evergreens include: * Most species of conifers (e.g., pine, Tsuga, hemlock, spruce, and fir), but not all (e.g., larch). * Live oak, holly, and "ancient" gymnosperms such as cycads * Many woody plants from frost-free climates * Rainforest trees * All eucalypts * Lycopodiopsida, Clubmosses and relatives * Most bamboos The Latin binomial term , meaning "always green", refers to the evergreen nature of the plant, for instance: :''Cupressus sempervirens'' (a cypress) :''Lonicera sempervirens'' (a honeysuckle) :''Sequoia sempervirens'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subshrub
A subshrub (Latin ''suffrutex'') or undershrub is either a small shrub (e.g. prostrate shrubs) or a perennial that is largely herbaceous but slightly woody at the base (e.g. garden pink and florist's chrysanthemum). The term is often interchangeable with "bush".Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 Because the criteria are matters of degree (normally of height) rather than of kind, the definition of a subshrub is not sharply distinguishable from that of a shrub; examples of reasons for describing plants as subshrubs include ground-hugging stems or low growth habit. Subshrubs may be largely herbaceous though still classified as woody, with overwintering perennial woody growth much lower-growing than deciduous summer growth. Some plants described as subshrubs are only weakly woody and some persist for only a few years. Others, such as '' Oldenburgia paradoxa'' live indefin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar
A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting, micropropagation, tissue culture, or carefully controlled seed production. Most cultivars arise from deliberate human genetic engineering, manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''#Formal definition, Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Horticultural Society
The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (North Yorkshire), Rosemoor (Devon) and Bridgewater (Greater Manchester); flower shows including the Chelsea Flower Show, Hampton Court Palace Flower Show, Tatton Park Flower Show and Cardiff Flower Show; community gardening schemes; Britain in Bloom and a vast educational programme. It also supports training for professional and amateur gardeners. the president was Keith Weed and the director general was Clare Matterson CBE. History Founders The creation of a British horticultural society was suggested by John Wedgwood (son of Josiah Wedgwood) in 1800. His aims were fairly modest: he wanted to hold regular meetings, allowing the society's members the opportunity to present papers on their horticultural activities and discov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Award Of Garden Merit
The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. It includes the full range of cultivated plants, from annuals, biennials and perennials to shrubs and trees. It covers plants grown for specific purposes - such as vegetable crops, fruit, hedging, topiary, groundcover, summer bedding, houseplants, etc. It tests characteristics such as robustness, hardiness, longevity, flowering/fruiting abundance and quality, usefulness, and ease of cultivation. It pays particular attention to a plant's ability to survive and thrive in challenging conditions such as wind and frost. The AGM trophy symbol is widely used in gardening literature as a sign of exceptional quality, and is recognised as such by writers, horticulturalists, nurseries, and everybody in the UK who practises gardening. History The Award of Garden Merit is a mark of quality aw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
