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Linnaeus' Flower Clock
Linnaeus's flower clock was a garden plan hypothesized by Carl Linnaeus that would take advantage of several plants that open or close their flowers at particular times of the day to accurately indicate the time. According to Linnaeus's autobiographical notes, he discovered and developed the floral clock in 1748. It builds on the fact that there are species of plants that open or close their flowers at set times of day. He proposed the concept in his 1751 publication ''Philosophia Botanica'', calling it the (). His observations of how plants changed over time are summarised in several publications. ''Calendarium florae'' (the Flower Almanack) describes the seasonal changes in nature and the botanic garden during the year 1755. In ''Somnus plantarum'' (the Sleep of Plants), he describes how different plants prepare for sleep during the night, and in Vernatio arborum he gives an account of the timing of leaf-bud burst in different trees and bushes. He may never have planted such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhagadiolus Edulis
''Rhagadiolus'' is a genus of plants in the tribe Cichorieae within the family Asteraceae, native to the Mediterranean region of southern Europe, northern Africa, and the Middle East. ; Species * '' Rhagadiolus edulis'' Gaertn. - from Portugal + Morocco to Iran * ''Rhagadiolus stellatus'' (L.) Gaertn. - from Britain to Canary Islands + Caucasus; naturalized in California ( Sonoma + Napa Counties) ; formerly included numerous species now considered better suited to other genera: ''Crepis Garhadiolus Hedypnois Hyoseris Koelpinia Leontodon ''Leontodon'' is a genus of plants in the tribe Cichorieae within the family Asteraceae, commonly known as hawkbits. Their English name derives from the mediaeval belief that hawks ate the plant to improve their eyesight. Although originally on ...'' References External links Flora of North America Asteraceae genera Cichorieae {{Cichorieae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calendula Pluvialis
''Dimorphotheca pluvialis,'' common names white African daisy, Cape marigold, weather prophet, Cape rain-daisy, ox-eye daisy, Cape daisy or rain daisy, is a plant species native to South Africa and Namibia. It is sparingly naturalized in scattered locations in California. ''Dimorphotheca pluvialis'' is an annual herb up to 40 cm (16 in) tall. It has long, narrow leaves, sometimes entire but sometimes toothed or pinnately lobed. Ray flowers are white to yellowish, sometimes with blue or purple markings. Disc flowers are usually white to yellowish with purple tips.Moench, Conrad. Methodus Plantas Horti Botanici et Agri Marburgensis : a staminum situ describendi 585. 1794. References External linksphoto of herbarium specimen at Missouri Botanical Garden, collected in South Africa {{Taxonbar, from=Q13036412 pluvialis '' Pluvialis '' is a genus of plovers, a group of wader, wading birds comprising four species that breed in the temperate or Arctic Northern Hemisphere. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactuca Sativa
Lettuce (''Lactuca sativa'') is an annual plant of the family Asteraceae. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it can also be grilled. One variety, celtuce (asparagus lettuce), is grown for its stems, which are eaten either raw or cooked. In addition to its main use as a leafy green, it has also gathered religious and medicinal significance over centuries of human consumption. Europe and North America originally dominated the market for lettuce, but by the late 20th century the consumption of lettuce had spread throughout the world. , world production of lettuce and chicory was 27 million tonnes, 56percent of which came from China. Lettuce was originally farmed by the ancient Egyptians, who transformed it from a plant whose seeds were used to obtain oil into an important food crop raised for its succulent leav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cicerbita Alpina
''Cicerbita alpina'', commonly known as the alpine sow-thistle or alpine blue-sow-thistle is a perennial herbaceous species of plant sometimes placed in the genus '' Cicerbita'' of the family Asteraceae, and sometimes placed in the genus ''Lactuca'' as ''Lactuca alpina''. It is native to upland and mountainous parts of Europe. It was once used as an herb in Sami cooking, and known as ''jierja''. Description ''Cicerbita alpina'' on average reaches in height, with a minimum height of and a maximum height of . The stem is erect and usually unbranched. It has glandular hairs and contains a white milky juice, a kind of latex. The alternate leaves are broad, triangular and clasping the stem, bluish-grey beneath, hairy along the veins and with toothed margins. The inflorescence is a panicle. Each composite flower is about wide and is set within a whorl of bracts. The individual blue-violet florets are tongue-like with a toothed, truncated tip, each having five stamens and a fused car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hieracium Sabaudum
''Hieracium sabaudum'', also known as New England hawkweed, European hawkweed or a Savoy hawkweed, is a European species of plants in the tribe Cichorieae within the family Asteraceae. It is native to Europe but has become naturalized in parts of North America. In Canada, it grows in British Columbia, Québec, and Nova Scotia. In the United States, it has been found in Washington state in the Northwest as well as Wisconsin and the Northeast (from Maine to Ohio). The species is considered a noxious weed in Washington state Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington .... Habitat and distribution The plant can be found growing in the Meadow, fields, roadsides and forests, and usually in well-drained soil. Common names en, New England hawkweed, European king devil french: ép ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leontodon Autumnale
''Scorzoneroides autumnalis'', commonly called autumn hawkbit, is a perennial plant species, widespread in its native range in Eurasia (from Europe east to western Siberia), and introduced in North America. The plant is sometimes called fall dandelion, because it is very similar to the common dandelion (one of the main differences being a branched stem with several capitula), but "yellow fields", covered by this plant appear much later than dandelions, towards the autumn in the Eastern Europe. In the Latin synonym of the plant name, ''Leontodon autumnalis'',Parnell, J. and Curtis, T, 2012 ''Webb's An Irish Flora''. Cork University Press."leontodon" means "lion's tooth", the same as "dandelion". Description ''Scorzoneroides autumnalis'' is a perennial herb growing to 35 cm high usually with branched stems and several flower-heads each about 30 mm across. The florets are all ligulate and bright yellow. The leaves are all basal and linear-oblong. Reproduction Flowers in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonchus Palustris
''Sonchus palustris'', commonly known as marsh sowthistle, is a plant native to temperate regions of the Europe, Russia, Central Asia, and Xinjiang in western China. It has also become naturalized in a few locations in the Canadian Province of Ontario. ''Sonchus palustris'' can be found in damp peaty or silty soils rich in nitrogen. The species epithet An epithet (, ), also byname, is a descriptive term (word or phrase) known for accompanying or occurring in place of a name and having entered common usage. It has various shades of meaning when applied to seemingly real or fictitious people, di ... ''palustris'' is Latin for "of the marsh" and indicates its common habitat. It is a perennial herb sometimes as much as 350 cm (almost 12 feet) tall. It produces an array of numerous flower heads, each with numerous yellow ray flowers but no disc flowers. References palustris Flora of temperate Asia Flora of Europe Plants described in 1753 Taxa named by Carl Linnaeu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonchus Arvensis
''Sonchus arvensis'', the field milk thistle, field sowthistle, perennial sow-thistle, corn sow thistle, dindle, gutweed, swine thistle, or tree sow thistle, is a species of flowering plant in the family Asteraceae. ''S. arvensis'' often occurs in annual crop fields and may cause substantial yield losses. Description The plant grows up to in height, with leaves long and wide. It produces conspicuous yellow flowerheads about wide, which are visited by various types of insects—especially hoverflies of the genus ''Eristalis''. Distribution ''Sonchus arvensis'' is native to Eurasia, where it is widespread across most of the continent. It has also become naturalized in many other regions, and is considered an invasive noxious weed in some places, such as North America (including Prince Edward Island), Russia, New Zealand, and Australia. It grows in areas such as pastures, roadsides, bushlands and the shorelines of lakes, rivers [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crepis Rubra
''Crepis rubra'' is a European species of flowering plant in the family Asteraceae with the common name red hawksbeard or pink hawk's-beard. It is native to the eastern Mediterranean region (Italy, Greece, Albania, North Macedonia, Croatia, Montenegro, Bulgaria, and Asia Minor) and is widely cultivated as an ornamental. It became naturalized in a small region of the United States (Marin County just north of San Francisco Bay in California). ''Crepis rubra '' is an annual up to tall. Each plant will usually produce only one or two flower heads, each with as many as 100 pink or red ray florets but no disc floret 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 w ...s. It grows in rocky fields and meadows. References External linksFirst Nature [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hieracium Murorum
''Hieracium murorum'', the wall hawkweed, is a species of flowering plant in the family 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 w .... It is native to Europe and naturalized in some of the colder regions of North America.''Hieracium murorum''. Flora of North America. /ref> References< ...
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Hieracium Umbellatum
''Hieracium umbellatum'' (commonly called ''Hieracium canadense''), the Canadian hawkweed, Canada hawkweed, narrowleaf hawkweed, or northern hawkweed, is a flowering plant in the family Asteraceae. Distribution It is native to most of the temperate parts of the northern hemisphere. Description Its pointed leaves have toothed margins, where the teeth can appear almost hooked. The flowers of the plant are yellow. Infraspecific synonyms There are many named infraspecific taxa of ''Hieracium umbellatum'': References * * * * * * * {{Taxonbar, from1=Q968658, from2=Q41726620 Hieracium, umbellatum Flora of Asia Flora of Europe Flora of North America Taxa named by Carl Linnaeus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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