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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] |
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] |
Asphodeloideae
Asphodeloideae is a subfamily of the monocot family Asphodelaceae in the order Asparagales. It has previously been treated as a separate family, Asphodelaceae ''sensu stricto''. The family Asphodelaceae has now been proposed to be a nomen conservandum, and the proposal has been recommended for ratification in 2017. In that case, Asphodelaceae will have priority over Xanthorrhoeaceae. This is reflected in the APG IV family lists. The subfamily name is derived from the generic name of the type genus, ''Asphodelus''. Members of group are native to Africa, central and western Europe, the Mediterranean basin, Central Asia and Australia, with one genus ('' Bulbinella'') having some of its species in New Zealand. The greatest diversity occurs in South Africa. The genera ''Aloe'', ''Asphodelus'', and ''Kniphofia'' are perhaps best known from their use in horticulture as ornamental plants. Description The Asphodeloideae are distinguished by a general presence of anthraquinones, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aloe
''Aloe'' (; also written ''Aloë'') is a genus containing over 650 species of flowering succulent plants.WFO (2022): Aloe L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000001341. Accessed on: 06 Nov 2022 The most widely known species is '' Aloe vera'', or "true aloe". It is called this because it is cultivated as the standard source for assorted pharmaceutical purposes. Other species, such as ''Aloe ferox'', are also cultivated or harvested from the wild for similar applications. The APG IV system (2016) places the genus in the family Asphodelaceae, subfamily Asphodeloideae. Within the subfamily it may be placed in the tribe Aloeae.Stevens, P.F. (2001 onwards).Asphodelaceae. ''Angiosperm Phylogeny Website''. Retrieved 2016-06-09. In the past, it has been assigned to the family Aloaceae (now included in the Asphodeloidae) or to a broadly circumscribed family Liliaceae (the lily family). The plant ''Agave americana'', which is sometimes called "Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemerocallidoideae
Hemerocallidoideae is the a subfamily of flowering plants, part of the family Asphodelaceae ''sensu lato'' in the monocot order Asparagales according to the APG system of 2016. Earlier classification systems treated the group as a separate family, the Hemerocallidaceae. The name is derived from the generic name of the type genus, ''Hemerocallis''. The largest genera in the group are ''Dianella'' (with 20 species), ''Hemerocallis'' (15), and '' Caesia'' (11). In the 21st century, the group has had two basic forms, depending on whether '' Johnsonia'' and its relatives are included or not. Each of these forms can vary by the inclusion or exclusion of '' Xeronema''. If defined narrowly, most of the group are native to tropical and temperate Eurasia and Australia. They also occur in New Zealand, many Pacific islands, western South America, and Madagascar, but not in Sub-Saharan Africa or North America.Ole Seberg. 2007. "Hemerocallidaceae" pages 370-371. In: Vernon H. Heywood, Ric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphodelus
''Asphodelus'' is a genus of mainly perennial flowering plants in the asphodel family Asphodelaceae that was first described by Carl Linnaeus in 1753. The genus was formerly included in the lily family (Liliaceae). The genus is native to temperate Europe, the Mediterranean, Africa, the Middle East, and the Indian Subcontinent, and some species have been introduced to, and are now naturalized in, other places such as New Zealand, Australia, Mexico and southwestern United States. Many asphodels are popular garden plants, which grow in well-drained soils with abundant natural light. Character The plants are hardy herbaceous perennials with narrow tufted radical leaves and an elongated stem bearing a handsome spike of white or yellow flowers. ''Asphodelus albus'' and '' A. fistulosus'' have white flowers and grow from high; '' A. ramosus'' is a larger plant, the large white flowers of which have a reddish-brown line in the middle of each segment. Etymology The genus name is derived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphodelus Macrocarpus
''Asphodelus macrocarpus'' is a herbaceous perennial plant belonging to the genus ''Asphodelus'' of the Asphodelaceae family. The Latin name ''macrocarpus'' of this species derives from the Greek μακρός (meaning ''large'') and καρπειον (meaning ''fruit''), referred to the size of the fruits. Description ''Asphodelus macrocarpus'' grows to a height of . The stem is erect, plain, cylindrical and glabrous. It is supported by fleshy, thickened roots (rhizomes). All the leaves are basal, gutter-shaped and covered by a greyish waxy coating. They are about wide and long. The terminal raceme is almost cylindrical, about long. The flowers are hermaphroditic, funnel-shaped, about of diameter, with six elongated white petals. The stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthorrhoea
''Xanthorrhoea'' () is a genus of about 30 species of flowering plants endemic to Australia. Species are known by the name grass tree. Description All are perennials and have a secondary thickening meristem in the stem. Many, but not all, species develop an above ground stem. The stem may take up to twenty years to emerge. Plants begin as a crown of rigid grass-like leaves, the caudex slowly growing beneath. The main stem or branches continue to develop beneath the crown, This is rough-surfaced, built from accumulated leaf-bases around the secondarily thickened trunk. The trunk is sometimes unbranched, some species will branch if the growing point is damaged, and others naturally grow numerous branches. Flowers are borne on a long spike above a bare section called a scape; the total length can be over three four metres long in some species. Flowering occurs in a distinct flowering period, which varies for each species, and often stimulated by bushfire. Fires will burn the le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthorrhoeoideae
''Xanthorrhoea'' () is a genus of about 30 species of flowering plants endemic to Australia. Species are known by the name grass tree. Description All are perennials and have a secondary thickening meristem in the stem. Many, but not all, species develop an above ground stem. The stem may take up to twenty years to emerge. Plants begin as a crown of rigid grass-like leaves, the caudex slowly growing beneath. The main stem or branches continue to develop beneath the crown, This is rough-surfaced, built from accumulated leaf-bases around the secondarily thickened trunk. The trunk is sometimes unbranched, some species will branch if the growing point is damaged, and others naturally grow numerous branches. Flowers are borne on a long spike above a bare section called a scape; the total length can be over three four metres long in some species. Flowering occurs in a distinct flowering period, which varies for each species, and often stimulated by bushfire. Fires will burn the le ... [...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] |
Scape (botany)
In botany, a scape is a peduncle arising from a subterranean or very compressed stem, with the lower internodes very long and hence few or no bracts except the part near the rachis or receptacle. Typically it takes the form of a long, leafless flowering stem rising directly from a bulb, rhizome, or similar subterranean or underwater structure. The scapes of scallions, chives, garlic chives, and garlic are used as vegetables. Etymology and usages The word ''scape'' (Latin ''scapus'', from Greek σκᾶπος), as used in botany, is fairly vague and arbitrary; various sources provide divergent definitions. Some older usages simply amount to a stem or stalk in general, but modern formal usage tends to favour the likes of "A long flower stalk rising directly from the root or rhizome", or "a long, naked, or nearly naked, peduncle, rising direct from the base of a plant, whether 1- or many-fid."Chittenden, Fred J. Ed., ''Royal Horticultural Society Dictionary of Gardening'', Oxfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovule
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a ''megagametophyte''— is also called the ''embryo sac'' in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. Location within the plant In flowering plants, the ovule is located inside the portion of the flower called the gynoecium. The ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a ''funiculus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
