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Xeronema
''Xeronema'' is a genus of flowering plants containing two species, ''Xeronema moorei'' from New Caledonia, and ''Xeronema callistemon'' (the Poor Knights lily) from the Poor Knights Islands and Taranga Island in New Zealand. The plants are herbaceous monocots, spreading by rhizomes, and have large flowers set on terminal spikes, with stamens towering above the flowers. The type species ''X. moorei'' is found in the mountains of New Caledonia. The Poor Knights lily (''X. callistemon'') is endemic to the Poor Knights Islands and Taranga Island in the north of New Zealand. It was discovered in 1924. The Poor Knights lily has large bottlebrush flower clusters that grow horizontally. The clusters begin growing vertically and then bend sideways. Bright red flowers grow upward from the stalk, with bright orange pollen. The plant can reach a height of one metre tall and across. The APG IV system, of 2016, accepts this genus as constituting its own family Xeronemataceae. It places th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeronema Moorei
''Xeronema'' is a genus of flowering plants containing two species, ''Xeronema moorei'' from New Caledonia, and ''Xeronema callistemon'' (the Poor Knights lily) from the Poor Knights Islands and Taranga Island in New Zealand. The plants are herbaceous monocots, spreading by rhizomes, and have large flowers set on terminal spikes, with stamens towering above the flowers. The type species ''X. moorei'' is found in the mountains of New Caledonia. The Poor Knights lily (''X. callistemon'') is endemic to the Poor Knights Islands and Taranga Island in the north of New Zealand. It was discovered in 1924. The Poor Knights lily has large bottlebrush flower clusters that grow horizontally. The clusters begin growing vertically and then bend sideways. Bright red flowers grow upward from the stalk, with bright orange pollen. The plant can reach a height of one metre tall and across. The APG IV system, of 2016, accepts this genus as constituting its own family Xeronemataceae. It places th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeronemataceae
''Xeronema'' is a genus of flowering plants containing two species, ''Xeronema moorei'' from New Caledonia, and ''Xeronema callistemon'' (the Poor Knights lily) from the Poor Knights Islands and Taranga Island in New Zealand. The plants are herbaceous monocots, spreading by rhizomes, and have large flowers set on terminal spikes, with stamens towering above the flowers. The type species ''X. moorei'' is found in the mountains of New Caledonia. The Poor Knights lily (''X. callistemon'') is endemic to the Poor Knights Islands and Taranga Island in the north of New Zealand. It was discovered in 1924. The Poor Knights lily has large bottlebrush flower clusters that grow horizontally. The clusters begin growing vertically and then bend sideways. Bright red flowers grow upward from the stalk, with bright orange pollen. The plant can reach a height of one metre tall and across. The APG IV system, of 2016, accepts this genus as constituting its own family Xeronemataceae. It places th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeronema Callistemon
''Xeronema callistemon'' is a species of flowering plant endemic to the Poor Knights Islands and Taranga Island in the north of New Zealand.Xeronema callistemon f. callistemon /ref> It was discovered in 1924 and has a common name Poor Knights lily. The plant is listed as vulnerable in the 1997 IUCN Red List of Plants,1997 IUCN red list of threatened plants p.746 but as of October 2010 is not listed in the |
Asparagales Genera
Asparagales (asparagoid lilies) is an order of plants in modern classification systems such as the Angiosperm Phylogeny Group (APG) and the Angiosperm Phylogeny Web. The order takes its name from the type family Asparagaceae and is placed in the monocots amongst the lilioid monocots. The order has only recently been recognized in classification systems. It was first put forward by Huber in 1977 and later taken up in the Dahlgren system of 1985 and then the APG in 1998, 2003 and 2009. Before this, many of its families were assigned to the old order Liliales, a very large order containing almost all monocots with colorful tepals and lacking starch in their endosperm. DNA sequence analysis indicated that many of the taxa previously included in Liliales should actually be redistributed over three orders, Liliales, Asparagales, and Dioscoreales. The boundaries of the Asparagales and of its families have undergone a series of changes in recent years; future research may lead to furt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asparagales
Asparagales (asparagoid lilies) is an order (biology), order of plants in modern classification systems such as the Angiosperm Phylogeny Group (APG) and the Angiosperm Phylogeny Web. The order takes its name from the type (biology), type family (biology), family Asparagaceae and is placed in the monocots amongst the lilioid monocots. The order has only recently been recognized in classification systems. It was first put forward by herbert Huber (botanist), Huber in 1977 and later taken up in the Dahlgren system of 1985 and then the APG in 1998, 2003 and 2009. Before this, many of its families were assigned to the old order Liliales, a very large order containing almost all monocots with colorful tepals and lacking starch in their endosperm. DNA sequencing, DNA sequence analysis indicated that many of the taxa previously included in Liliales should actually be redistributed over three orders, Liliales, Asparagales, and Dioscoreales. The boundaries of the Asparagales and of its fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poor Knights Islands
The Poor Knights Islands (Māori: ''Tawhiti Rahi)'' are a group of islands off the east coast of the Northland Region of the North Island of New Zealand. They lie to the northeast of Whangarei, and offshore halfway between Bream Head and Cape Brett. Uninhabited since the 1820s, they are a nature reserve and popular underwater diving spot, with boat tours typically departing from Tutukaka. The Poor Knights Islands Marine Reserve surrounds the island. Beaglehole (1955) comments that the origin of the island name is not clear, and speculates that the name could be related to the Poor Knights of Windsor, or that the islands were named for their resemblance to Poor Knight's Pudding, a bread-based dish topped with egg and fried, popular at the time of discovery by Europeans. Description The chain consists of two large islands (Tawhiti Rahi, the larger at , and Aorangi () to the south), and several smaller islands. Aorangaia and Archway Island lie to the southwest of Aor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphodelaceae
Asphodelaceae is a family of flowering plants in the order Asparagales. Such a family has been recognized by most taxonomists, but the circumscription has varied widely. In its current circumscription in the APG IV system, it includes about 40 genera and 900 known species. The type genus is ''Asphodelus''. The family has a wide but scattered distribution throughout the tropics and temperate zones. Many of the species are cultivated as ornamentals. A few are grown commercially for cut flowers. Two species of '' Aloe'' are grown for their leaf sap, which has medicinal and cosmetic uses. ''Xanthorrhoea'' is endemic to Australia. Description Members of the Asphodelaceae are diverse, with few characters uniting the three subfamilies currently recognized. The presence of anthraquinones is one common character. The flowers (the inflorescence) are typically borne on a leafless stalk ( scape) which arises from a basal rosette of leaves. The individual flowers have jointed stalks ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APG IV System
The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was published in 2016, seven years after its predecessor the APG III system was published in 2009, and 18 years after the first APG system was published in 1998. In 2009, a linear arrangement of the system was published separately; the APG IV paper includes such an arrangement, cross-referenced to the 2009 one. Compared to the APG III system, the APG IV system recognizes five new orders (Boraginales, Dilleniales, Icacinales, Metteniusales and Vahliales), along with some new families, making a total of 64 angiosperm orders and 416 families. In general, the authors describe their philosophy as "conservative", based on making changes from APG III only where "a well-supported need" has been demonstrated. This has sometimes resulted in placements that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Wayne Chase
Mark Wayne Chase (born 1951) is a US-born British botanist. He is noted for work in plant classification and evolution, and one of the instigators of the Angiosperm Phylogeny Group-classification for flowering plants which is partly based on DNA studies. In particular he has researched orchids, and currently investigates ploidy and hybridization in ''Nicotiana''. In 1984, he received 'The George H.M. Lawrence Memorial Award', in the amount of $2,000, presented by the Hunt Institute for Botanical Documentation, Carnegie Mellon University and presented at the annual banquet of the Botanical Society of America. In 1998 he shared the Linnean Medal with Colin Patterson. In 2008 he was one of thirteen recipients of the Darwin-Wallace Medal, which was given every 50 years by the Linnean Society of London. Has been the Keeper of the Jodrell Laboratory and now is retired but still an horary research associate at the Royal Botanic Gardens, Kew. He is a fellow of the Royal Society. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollen
Pollen is a powdery substance produced by seed plants. It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male cone to the female cone of gymnosperms. If pollen lands on a compatible pistil or female cone, it germinates, producing a pollen tube that transfers the sperm to the ovule containing the female gametophyte. Individual pollen grains are small enough to require magnification to see detail. The study of pollen is called palynology and is highly useful in paleoecology, paleontology, archaeology, and forensics. Pollen in plants is used for transferring haploid male genetic material from the anther of a single flower to the stigma of another in cross-pollination. In a case of self-pollination, this process takes place from the anth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of New Zealand
This article relates to the flora of New Zealand, especially indigenous strains. New Zealand's geographical isolation has meant the country has developed a unique variety of native flora. However, human migration has led to the importation of many other plants (generally referred to as 'exotics' in New Zealand) as well as widespread damage to the indigenous flora, especially after the advent of European colonisation, due to the combined efforts of farmers and specialised societies dedicated to importing European plants & animals. Characteristics Indigenous New Zealand flora generally has the following characteristics: * the majority are evergreen. * few annual herbs. * few cold-tolerant trees. * majority are dispersed by birds. * very few have defences against mammalian browsers. * few nitrogen fixing plants. * few fire-adapted species. * many dioecious species. * flowers are typically small and white. * many plants have divaricating growth forms. * many plants have evolved in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridaceae
Iridaceae is a family of plants in order Asparagales, taking its name from the irises, meaning rainbow, referring to its many colours. There are 66 accepted genera with a total of c. 2244 species worldwide (Christenhusz & Byng 2016). It includes a number of other well known cultivated plants, such as freesias, gladioli and crocuses. Members of this family are perennial plants, with a bulb, corm or rhizome. The plants grow erect, and have leaves that are generally grass-like, with a sharp central fold. Some examples of members of this family are the blue flag and yellow flag. Name and history The family name is based on the genus ''Iris'', the largest and best known genus in Europe. This genus dates from 1753, when it was coined by Swedish botanist, Carl Linnaeus. Its name derives from the Greek goddess, Iris, who carried messages from Olympus to earth along a rainbow, whose colours were seen by Linnaeus in the multi-hued petals of many of the species. The family is current ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
