|
Groundsel
Groundsel is a common name for several plants and may refer to: *Members of the genus ''Senecio'' **Creeping groundsel, ''Senecio angulatus'' **Common groundsel, ''Senecio vulgaris'' **Welsh groundsel, '' Senecio cambrensis'' **York radiate groundsel, ''Senecio eboracensis'' **Eastern groundsel, '' Senecio vernalis'' **Heath groundsel, ''Senecio sylvaticus'' **Sticky groundsel, '' Senecio viscosus'' *Groundsel bush, ''Baccharis halimifolia'' *Members of ''Dendrosenecio'', the giant groundsels *Members of ''Packera'', a segregate of ''Senecio'' **Golden groundsel, ''Packera aurea (Senecio aureus)'' **Golden groundsel, ''Packera obovata (Senecio obovatus)'' *Members of ''Roldana ''Roldana'' also known as groundsel is a genus of large herbs or sub shrubs from the tribe groundsel tribe within the sunflower family. Most if not all of its members used to be members of a related genus, ''Senecio''. The species which are n ...'', a segregate of ''Senecio'' *Members of '' Tephroseris'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Vulgaris
''Senecio vulgaris'', often known by the common names groundsel and old-man-in-the-spring, is a flowering plant in the family Asteraceae. It is an annual herb, native to Europe and widely naturalised as a ruderal species in suitable disturbed habitats worldwide. Description ''Senecio vulgaris'' is an erect herbaceous annual growing up to 16 inches (45 cm) tall. The inflorescences usually lack ray florets, the yellow disc florets mostly hidden by the bracts giving the flowers an inconspicuous appearance. ''Senecio vulgaris'' is very similar to '' Senecio viscosus'' but ''S. vulgaris'' does not have the glandular hairs and ray florets found in ''S. viscosus''. Leaves and stems Upper leaves of ''Senecio vulgaris'' are sessile, lacking their own stem ( petiole), alternating in direction along the length of the plant, two rounded lobes at the base of the stem (auriculate) and sub-clasping above. Leaves are pinnately lobed and + long and wide, smaller towards the top of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packera
''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios'' by Asa Gray), but were divided out based on chromosome numbers, a variety of morphological characters, and molecular phylogeny. Species * '' Packera anonyma'' (Wood) W.A. Weber & A. Löve − Small's ragwort * ''Packera antennariifolia'' (Britt.) W.A. Weber & A. Löve − shalebarren ragwort * ''Packera aurea'' ( L.) A.& D. Löve − golden ragwort ** ''Senecio aureus'' L. * '' Packera bernardina'' (Greene) W.A. Weber & A. Löve − San Bernardino ragwort * ''Packera bolanderi'' (Gray) W.A. Weber & A. Löve − Bolander's ragwort * '' Packera breweri'' (Burtt-Davy) W.A. Weber & A. Löve − Brewer's ragwort ** ''Senecio breweri'' Burtt-Davy * ''Packera cana'' (Hook.) W.A. Weber & A. Löve − woolly groundsel * ''Packera c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio
''Senecio'' is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus ''Senecio'' is one of the largest genera of flowering plants. Description Morphology The flower heads are normally rayed with the heads borne in branched clusters, and usually completely yellow, but green, purple, white and blue flowers are known as well. In its current circumscription, the genus contains species that are annual or perennial herbs, shrubs, small trees, aquatics or climbers. The only species which are trees are the species formerly belonging to '' Robinsonia'' occurring on the Juan Fernández Islands. Chemistry Pyrrolizidine alkaloids are found in all ''Senecio'' species. These alkaloids serve as a natural biocides to deter or even kill animals that would eat them. Livestock generally do not find them palatable. ''Senecio'' species are used as food plants by the larvae of some Lepidoptera spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Angulatus
''Senecio angulatus'', also known as creeping groundsel and Cape ivy, is a succulent flowering plant in the family Asteraceae that is native to South Africa. Cape ivy is a scrambling and a twining herb that can become an aggressive weed once established, making it an invasive species. It has been naturalised in the Mediterranean Basin, where it is grown as an ornamental plant for its satiny foliage and sweet-scented flowers. Other names include climbing groundsel, Algerian senecio, and scrambling groundsel. Cape ivy can be distinguished vegetatively from '' Delairea odorata'' (German ivy) by the lack of lobes at the leaf stalk base, the fleshy leaf surface, the outwardly curved leaf teeth, stiff stems, a more rambling habit, and the ray florets with petal-like ligules. In Australia, ''Senecio tamoides'' (Canary creeper) may usually be misapplied and is considered to be ''Senecio angulatus''. Description Leaves and stems Its form is a dense tangled shrub tall or a climber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Eboracensis
''Senecio eboracensis'', the York groundsel or York radiate groundsel, is a flowering plant in the daisy family Asteraceae. It is a self-pollinating hybrid species of ragwort and one of only six new plant species to be discovered in either the United Kingdom or North America in the last 100 years. It was discovered in 1979 in York, England growing next to a car park and formally described in 2003. Like many of the Senecio genus it can be found growing in urban habitats, such as disturbed earth and pavement cracks and this particular species only in York and between a railway and a car park. Description York radiate groundsel is a deciduous annual plant that sets its seed within the 3 months that it takes this plant to mature from germination to the upwards of high adult plant. With pretty yellow daisy-like flowers from its Sicilian parent ('' S. squalidus'') but also with the less-promiscuous habits of its native parent ('' S. vulgaris''); this member of the Senecio genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Cambrensis
''Senecio cambrensis'' (Welsh groundsel or Welsh ragwort) is a flowering plant of the family Asteraceae. It is endemic to Great Britain and currently known only from North Wales. It is a recently evolved plant that arose as a result of hybridization between two related species. Discovery It was first noticed in 1948 by Horace E. Green at Ffrith in Flintshire, north-east Wales. The species was described in 1955 by Effie M. Rosser of Manchester Museum using material from the site. It later turned up at a number of sites across the north-east of Wales including Chirk, Brymbo, Queensferry and Colwyn Bay and a herbarium specimen was discovered that had been collected at Brynteg in 1925. Origin Welsh groundsel is an allopolyploid, a plant that contains sets of chromosomes originating from two different species. Its ancestor was ''Senecio × baxteri'', an infertile hybrid that can arise spontaneously when the closely related groundsel (''Senecio vulgaris'') and Oxford ragwort (''S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Vernalis
''Senecio vernalis'' is one of the European species of Senecio, an annual that is also known as eastern groundsel. While it has been long classified as ''Senecio vernalis'', this species has more recently been described as a subspecies of ''Senecio leucanthemifolius'' and is now included by some in that species. Description Eastern groundsel is a "lovely yellow-flowering weed found by the roadside and on the edges of fields" that can be sometimes confused with '' S. eboracensis.'' ;Stems and leaves: Leaves usually wavey, dissected, with lateral lobes that are about as long as width of central undivided portion, usually conspicuously covered with fine hairs. The edges are serrated. Leaves alternate one leaf per node along the stem. ;Seeds: The oldest collection of seeds recorded was 16 years; average germination change for these was from 100% to 82.5%, with a mean storage period 13 years. A '' Senecio'' and a diploid, ''Senecio vernalis'' is part of a species group along wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrosenecio
''Dendrosenecio'' is a genus of flowering plants in the sunflower family. It is a segregate of ''Senecio'', in which it formed the subgenus ''Dendrosenecio''. Its members, the giant groundsels, are native to the higher altitude zones of ten mountain groups in equatorial East Africa, where they form a conspicuous element of the flora. Description They have a giant rosette habit, with a terminal leaf rosette at the apex of a stout woody stem. When they bloom, the flowers form a large terminal inflorescence. Concomitantly, two to four lateral branches are normally initiated. As a result, old plants have the appearance of candelabras the size of telephone poles, each branch with a terminal rosette. Species ''Dendrosenecio'' varies geographically between mountain ranges, and altitudinally on a single mountain. There has been disagreement among botanists as to which populations of ''Dendrosenecio'' warrant recognition as species, and which should be relegated to the status of subspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Viscosus
''Senecio viscosus'' is a herbaceous annual plant of the genus ''Senecio''. It is known as the sticky ragwort, sticky groundsel or stinking groundsel Groundsel is a common name for several plants and may refer to: *Members of the genus ''Senecio'' **Creeping groundsel, ''Senecio angulatus'' **Common groundsel, ''Senecio vulgaris'' **Welsh groundsel, '' Senecio cambrensis'' **York radiate grounds .... Description An annual, growing to 70 cm high and covered with glandular hairs. Very similar to ''Senecio sylvaticus'' which does not have glandular hairs. The outer bracts show a brown tip. The ray-florets are ligulate, yellow and at first spreading then rolled back. The leaves are alternate and deeply lobed. ''Senecio vulgaris'' (Groundsel) does not have ray florets.Parnell, J. and Curtis, T. 2012. ''Webb's An Irish Flora.'' Cork University Press. Distribution Locally common in Britain and Ireland on waste ground.Hackney,P. 1992. ''Stewart & Corry's Flora of the North-east ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio Sylvaticus
''Senecio sylvaticus'' is a species of flowering plant in the aster family. It is variously known as the woodland ragwort, heath groundsel, or mountain common groundsel. It is native to Eurasia, and it can be found in other places, including western and eastern sections of North America, as an introduced species and an occasional roadside weed. It grows best in cool, wet areas. It is an annual herb producing a single erect stem up to 80 centimeters tall from a taproot. It is coated in short, curly hairs. The toothed, deeply lobed leaves are up to 12 centimeters long and borne on petioles. They are evenly distributed along the stem. The inflorescence is a wide, spreading array of many flower heads, each lined with green- or black-tipped phyllaries In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. The involucre is the grouping of bracts together. Phyllaries are reduced leaf-like structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baccharis Halimifolia
''Baccharis halimifolia'' is a North American species of shrubs in the family Asteraceae. It is native to Nova Scotia, the eastern and southern United States (from Massachusetts south to Florida and west to Texas and Oklahoma), eastern Mexico (Nuevo León, San Luis Potosí, Tamaulipas, Veracruz, Quintana Roo), the Bahamas, and Cuba. Widely used common names include eastern baccharis, groundsel bush, sea myrtle, and saltbush, with consumption weed, cotton-seed tree, groundsel tree, menguilié, and silverling also used more locally. In most of its range, where no other species of the genus occur, this plant is often simply called baccharis. Classification ''Baccharis halimifola'' was first described and named by Carl Linnaeus in his ''Species Plantarum'', published in 1753. No subspecies or varieties are recognized within the species. This species is the northernmost member of the large Western Hemisphere genus Baccharis in the aster family (Asteraceae). ''Senecio arborescens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roldana
''Roldana'' also known as groundsel is a genus of large herbs or sub shrubs from the tribe groundsel tribe within the sunflower family. Most if not all of its members used to be members of a related genus, ''Senecio''. The species which are native to Southwest United States, Mexico and Central America and naturalized elsewhere. ; Species ; formerly included several species now regarded as better suited to other genera: ''Senecio Trixis ''Trixis'' is a genus of shrubs in the family Asteraceae, native to North and South America including the West Indies. Members of the genus are commonly known as threefolds due to the outer lip of the corolla. The generic name is derived from ( ...'' References External links Senecioneae Asteraceae genera Flora of North America {{Senecioneae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
