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Papaver Radicatum
''Papaver radicatum'' is a species of poppy known by the common names Arctic poppy, rooted poppy, and yellow poppy. It is a flowering plant in the family Papaveraceae. Distribution ''Papaver radicatum'' is circumpolar in distribution and grows in arctic and alpine zones in Europe, North America, and Asia. ''Papaver radicatum'' grows at a latitude of 83°40'N on Kaffeklubben Island, making it one of the northernmost plants in the world. It appears on the Coat of arms of Nunavut. The plant is known for appearing in white and yellow colorations. The yellow variant is much more widely distributed, occurring out in the open, compared to the white flowers typically only found in more remote locations. Characteristics ''Papaver radicatum'' has hair like structures covering the stem and sepals that are used to retain heat to act as insulation. The plant also shows heliotropism where the flower grows to face the sunlight, and the petals reflect light towards the pistil. The petals g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christen Friis Rottbøll
Christen Friis Rottbøll (3 March 1727, at Hørbygård, Denmark – 15 June 1797, in Copenhagen) was a Danish physician and botanist: He was a pupil of Carolus Linnaeus. Early life Rottbøll was born on the Hørbygaard estate at Holbæk, the son of Christen Michelsen Rottbøll (died 1729) and Margrethe Cathrine Friis. His father was the manager of the estate but died in 1729. His mother was married second time to manager of Hagestedgaard Ole Nielsen Faxøe. Education and career Rottbøll studied at the University of Copenhagen, first theology, then medicine, in which he took his doctorate degree in 1755 (''De morbis deuteropathicis seu Sympathier''). He then travelled abroad 1757–1761 to further his studies of medicine, and to study chemistry and botany – the latter subject at Uppsala University with Linnaeus. From 1761, he was executive at the Botanic Garden in Copenhagen, and succeeded Georg Christian Oeder as its director in 1770. He was appointed professor at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papaveraceae
The Papaveraceae are an economically important family of about 42 genera and approximately 775 known species of flowering plants in the order Ranunculales, informally known as the poppy family. The family is cosmopolitan, occurring in temperate and subtropical climates (mostly in the northern hemisphere), but almost unknown in the tropics. Most are herbaceous plants, but a few are shrubs and small trees. The family currently includes two groups that have been considered to be separate families: Fumariaceae and Pteridophyllaceae. Description The plants may be annual, biennial, or perennial. Usually herbaceous, a few species form shrubs or evergreen trees. They are lactiferous, producing latex, which may be milky or watery, coloured or plain. All parts contain a well-developed duct system (these ducts are called "laticifers"), producing a milky latex, a watery white, yellow or red juice. The simple leaves are alternate or sometimes whorled. They have petioles and are not enc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaffeklubben Island
Kaffeklubben Island or Coffee Club Island ( da, Kaffeklubben Ø; kl, Inuit Qeqertaat) is an uninhabited island lying off the northern tip of Greenland. It contains the northernmost undisputed point of land on Earth. Discovery The first recorded sighting of Kaffeklubben Island was made by American explorer Robert Peary in 1900; however, the island was not visited until 1921. When the Danish explorer Lauge Koch set foot on the island, it received its name after the coffee club in the University of Copenhagen Geological Museum. In 1969, a Canadian team calculated that its northernmost tip is farther north than Cape Morris Jesup, the northernmost point of mainland Greenland, thus claiming its record as the most northerly point on land. Since its record as the northernmost point of land was established, several gravel banks have been discovered in the sea to the north of the island, such as Oodaaq, 83-42, and ATOW1996; however, there is debate as to whether such gravel banks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coat Of Arms Of Nunavut
The coat of arms of the territory of Nunavut was granted by a warrant of Roméo LeBlanc, Governor General of Canada, dated 31 March 1999, one day before the territory of Nunavut, Canada, was created. The same document specified the flag of Nunavut. Overview The symbol was designed in collaboration with Inuit elders, leaders, artists, groups, and the general population of the territory. Each symbol was chosen individually from the 800 submissions for the flag and coat of arms that were received. Five draft designs were created in collaboration between the heraldic artist at the Canadian Heraldic Authority and Andrew Qappik, an Inuit artist from Pangnirtung. The shield is blue and gold, symbolizing the riches of the land. According to the blazon, the shield should be presented on a roundel shaped shield, rather than the traditional escutcheon shape in European heraldry. In chief is a representation of the midnight sun and of the North Star, or ''Niqirtsuituk''. Below are a '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heliotropism
Heliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the Sun. The habit of some plants to move in the direction of the Sun, a form of tropism, was already known by the Ancient Greeks. They named one of those plants after that property ''Heliotropium'', meaning "sun turn". The Greeks assumed it to be a passive effect, presumably the loss of fluid on the illuminated side, that did not need further study. Aristotle's logic that plants are passive and immobile organisms prevailed. In the 19th century, however, botanists discovered that growth processes in the plant were involved, and conducted increasingly in-depth experiments. A. P. de Candolle called this phenomenon in ''any'' plant ''heliotropism'' (1832). It was renamed phototropism in 1892, because it is a response to light rather than to the sun, and because the phototropism of algae in lab studies at that time strongly depended on the brightness (p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombus Polaris
''Bombus polaris'' is a common Arctic bumblebee species. ''B. polaris'' is one of two bumblebees that live above the Arctic Circle. The other is its social parasite ''Bombus hyperboreus''. ''B. polaris'' is a social bee that can survive at near freezing temperatures. It has developed multiple adaptations to live in such cold temperatures. B. polaris has a thicker coat of hair than most bees, utilizes thermoregulation, and makes insulated nests. Taxonomy and phylogeny ''Bombus polaris'' is part of the family Apidae, which is part of the larger class of Insecta. Apidae is the largest family of bees, including several species of bees used by humans for honey consumption. ''B. polaris'' is part of the subgenus '' Alpinobombus'' along with '' Bombus alpinus'', '' Bombus balteatus'', ''Bombus hyperboreus'', and '' Bombus neoboreus''. ''Alpinobombus'' bees occur in arctic and high alpine regions. It is of the Bombini tribe, which feeds on pollen or nectar. Description and identificat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of North America
The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenland. It includes bryophytes and vascular plants. All taxa are described and included in dichotomous keys, distributions of all species and infraspecific taxa are mapped, and about 20% of species are illustrated with line drawings prepared specifically for FNA. It is expected to fill 30 volumes when completed and will be the first work to treat all of the known flora north of Mexico; in 2015 it was expected tha the series would conclude in 2017. Twenty-nine of the volumes have been published as of 2022. Soon after publication, the contents are made available online. FNA is a collaboration of about 1,000 authors, artists, reviewers, and editors from throughout the world. Reception The series has been praised for "the comprehensive treatme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papaver Dahlianum
''Papaver dahlianum'', commonly called the Svalbard poppy, is a poppy species common on Svalbard, north-eastern Greenland and a small area of northern Norway. It is the symbolic flower of Svalbard. Some sources regard this species as part of ''Papaver radicatum''. It grows to 10–25 cm high, and has long-petiolated basal leaves forming a rosette; the leaves are pinnately dissected and coarsely hirsute. The flowering stems are slender, often arcuate, hirsute. The flower is 2–4 cm in diameter, with four yellow or white, slightly undulate petals, and two boat-shaped sepals, which are densely hirsute with dark brown hairs. The fruit is an obovoid capsule covered with stiff hairs, containing numerous seeds. The poppy grows on gravel, roadsides, scree sleeps and ledges, and holds the altitude record for flowering plants in Svalbard. Despite the extreme northern latitude of the Svalbard poppy, if accepted as a separate species, ''Papaver radicatum'' is the most norther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papaver
''Papaver'' is a genus of 70–100 species of frost-tolerant annuals, biennials, and perennials native to temperate and cold regions of Eurasia, Africa and North America. It is the type genus of the poppy family, Papaveraceae. Description The flowers have two sepals that fall off as the bud opens, and four (or up to six) petals in red, pink, orange, yellow, or lilac. There are many stamens in several whorls around a compound pistil, which results from the fusion of carpels. The stigmas are visible on top of the capsule, and the number of stigmas corresponds to the number of fused carpels. The ovary later develops into a dehiscing capsule, capped by the dried stigmas. The opened capsule scatters its numerous, tiny seeds as air movement shakes it, due to the long stem. The typical ''Papaver'' gynoecium is superior (the flower is hypogynous) with a globular ovary. The style is characteristically absent for the type species opium poppy, and several others, although those wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
