|
Petasites Pyrenaicus
''Petasites pyrenaicus'', the winter heliotrope, is a medicinal Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care practic ... and ornamental flowering plant in the family Asteraceae. Description This perennial grows from deep rhizomes. The leaves are large, Glossary of botanical terms#suborbicular, suborbicular and up to 20 cm across and stalked with small regular teeth. The species is dioecy, dioecious, male and female flowers being borne on separate plants. The erect flower-heads grow in short racemes on stems up to 25 cm long with a few scale-leaves. The florets are pinkish-mauve and appear in DecemberParnell, J. and Curtis, T. 2012. ''Webb's An Irish Flora''. Cork University Press. in Ireland and from January to MarchClapham, A.R., Tutin, T.G. and Warburg E.F. 1968. ''Excursio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vill
Vill is a term used in English history to describe the basic rural land unit, roughly comparable to that of a parish, manor, village or tithing. Medieval developments The vill was the smallest territorial and administrative unit—a geographical subdivision of the hundred and county—in Anglo-Saxon England. It served both a policing function through the tithing, and the economic function of organising common projects through the village moot. The term is the Anglicized form of the word , used in Latin documents to translate the Anglo-Saxon . The vill remained the basic rural unit after the Norman conquest—land units in the ''Domesday Book'' are frequently referred to as vills—and into the late medieval era. Whereas the manor was a unit of landholding, the vill was a territorial one—most vills did ''not'' tally physically with manor boundaries—and a public part of the royal administration. The vill had judicial and policing functions, including frankpledge, as well as resp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medicinal Plant
Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including Plant defense against herbivory, defense and protection against insects, fungi, Plant disease resistance, diseases, and herbivorous mammals. The earliest historical records of herbs are found from the Sumerian civilization, where hundreds of medicinal plants including opium are listed on clay tablets, c. 3000 BC. The Ebers Papyrus from ancient Egypt, c. 1550 BC, describes over 850 plant medicines. The Greek physician Pedanius Dioscorides, Dioscorides, who worked in the Roman army, documented over 1000 recipes for medicines using over 600 medicinal plants in ''De materia medica'', c. 60 AD; this formed the basis of pharmacopoeias for some 1500 years. Drug research sometimes makes use of ethnobotany to search for pharmacologically active substances, and this approac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornamental Plant
Ornamental plants or garden plants are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars that improve on the original species in qualities such as color, shape, scent, and long-lasting blooms. There are many examples of fine ornamental plants that can provide height, privacy, and beauty for any garden. These ornamental perennial plants have seeds that allow them to reproduce. One of the beauties of ornamental grasses is that they are very versatile and low maintenance. Almost any types of plant have ornamental varieties: trees, shrubs, climbers, grasses, succulents. aquatic plants, herbaceous perennials and annual plants. Non-botanical classifications include houseplants, bedding plants, hedges, plants for cut flowers and foliage plants. The cultivation of ornamental plants comes under floriculture and tree nurseries, which is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae were first described in the year 1740. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of extant species in each family is unknown. Most species of Asteraceae are annual, biennial, or perennial herbaceous plants, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions in a wide variety of habitats. Most occur in hot desert and cold or hot semi-desert climates, and they are found on every continent but Antarctica. The primary common characteristic is the existence of sometimes hundreds of tiny individual florets which are held together by protective involucres in flower heads, or more technicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Botanical Terms
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology, Glossary of lichen terms, and List of Latin and Greek words commonly used in systematic names. A B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioecy
Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is biparental reproduction. Dioecy has costs, since only about half the population directly produces offspring. It is one method for excluding self-fertilization and promoting allogamy (outcrossing), and thus tends to reduce the expression of recessive deleterious mutations present in a population. Plants have several other methods of preventing self-fertilization including, for example, dichogamy, herkogamy, and self-incompatibility. Dioecy is a dimorphic sexual system, alongside gynodioecy and androdioecy. In zoology In zoology, dioecious species may be opposed to hermaphroditic species, meaning that an individual is either male or female, in which case the synonym gonochory is more often used. Most animal species are dioecious (gon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ireland
Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Great Britain and Ireland), North Channel, the Irish Sea, and St George's Channel. Ireland is the List of islands of the British Isles, second-largest island of the British Isles, the List of European islands by area, third-largest in Europe, and the List of islands by area, twentieth-largest on Earth. Geopolitically, Ireland is divided between the Republic of Ireland (officially Names of the Irish state, named Ireland), which covers five-sixths of the island, and Northern Ireland, which is part of the United Kingdom. As of 2022, the Irish population analysis, population of the entire island is just over 7 million, with 5.1 million living in the Republic of Ireland and 1.9 million in Northern Ireland, ranking it the List of European islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Britain
Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is dominated by a maritime climate with narrow temperature differences between seasons. The 60% smaller island of Ireland is to the west—these islands, along with over 1,000 smaller surrounding islands and named substantial rocks, form the British Isles archipelago. Connected to mainland Europe until 9,000 years ago by a landbridge now known as Doggerland, Great Britain has been inhabited by modern humans for around 30,000 years. In 2011, it had a population of about , making it the world's third-most-populous island after Java in Indonesia and Honshu in Japan. The term "Great Britain" is often used to refer to England, Scotland and Wales, including their component adjoining islands. Great Britain and Northern Ireland now constitute the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petasites Hybridus
''Petasites hybridus'', the butterbur, is a herbaceous perennial flowering plant in the family Asteraceae, native to Europe and northern Asia. Although used over centuries in traditional medicine to treat various disorders, there are no approved medical uses, but it is sold as a dietary supplement. Concerns about the potential toxic effects of pyrrolizidine alkaloids in butterbur limit its use in human and animal studies. Etymology and common names The botanical name ''Petasites'' derived from the Greek word, ''petasos'', from the plant's broad leaves resembling a wide-brimmed hat. ''Butterbur'' may have derived from the use of leaves to wrap butter centuries ago. It is also called ''bog rhubarb'', ''Devil's hat'', and ''pestilence wort''. Synonym (taxonomy), Synonyms include ''P. officinalis'', ''P. ovatus'', ''P. vulgaris'', and ''Tussilago petasites'' L. Description The species is Dioecy, dioecious, the male and female flowers being borne on separate plants. In Britain, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petasites Albus
''Petasites albus'', the white butterbur, is a flowering plant species in the family ''Asteraceae''. It is native to central Europe and the Caucasus. Description ''Petasites albus'' is a perennial rhizomatous herb, with large suborbicular (almost round) leaves covered with lax cottony hairs. The flower heads are compact racemes of composite flowers or capitula with white ligules. They are dioecious, the male plants often more common than the females, as in the British range. Distribution The native range of ''Petasites albus'' is the mountains of central Europe and the Caucasus. It was first recorded in Sweden in Skåne in 1737 (Nordstedt 1920). In the British Isles it is a neophyte, introduced by the 17th century and naturalized in Yorkshire by 1843, but now predominantly distributed in North-east Scotland. Habitat It prefers damp soils in deciduous forests, mountain pastures, springs and streamsides, roadside verges and other areas of rough ground. References alb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.JPG "Click for more on -> Flowering Plant")
