|
Thistle
Thistle is the common name of a group of flowering plants characterized by leaves with sharp spikes on the margins, mostly in the family Asteraceae. Prickles can also occur all over the planton the stem and on the flat parts of the leaves. These prickles protect the plant from herbivores. Typically, an involucre with a clasping shape similar to a cup or urn subtends each of a thistle's flower heads. The typically feathery pappus of a ripe thistle flower is known as thistle-down. The spininess varies considerably by species. For example, '' Cirsium heterophyllum'' has very soft spines while '' Cirsium spinosissimum'' is the opposite. Typically, species adapted to dry environments are more spiny. The term thistle is sometimes taken to mean precisely those plants in the tribe Cardueae (synonym: Cynareae), especially the genera '' Carduus'', '' Cirsium'', and '' Onopordum''. However, plants outside this tribe are sometimes also called thistles. Biennial thistles are partic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirsium
''Cirsium'' is a genus of Perennial plant, perennial and Biennial plant, biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely known as plume thistles. These differ from other thistle genera (''Carduus'', ''Silybum'' and ''Onopordum'') in having a seed with a Pappus (flower structure), pappus of feathered hairs on their achenes. The other genera have a pappus of simple unbranched hairs. They are mostly native to Eurasia and northern Africa, with about 60 species from North America (although several species have been introduced outside their native ranges). The type (biology), lectotype species of the genus is ''Cirsium heterophyllum'' (L.) Hill. ''Cirsium'' thistles are known for their effusive flower heads, usually purple, rose or pink, also yellow or white. The radially symmetrical disc flowers are at the end of the branches and are visited by many kinds of insects, featuring a generalised pollination syndrome. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnicus
''Centaurea'' () is a genus of over 700 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" ( common knapweed). The ''Plectocephalus'' group – possibly a distinct genus – is known as basketflowers. "Cornflower" is used for a few species, but that term more often specifically means either '' C. cyanus'' (the annual cornflower) or '' Centaurea montana'' (the perennial cornflower). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genus '' Centaurium''.Keil (2006), Keil & Ochsmann (2006). The name is said to be in reference to Chiro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurea
''Centaurea'' () is a genus of over 700 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" ( common knapweed). The ''Plectocephalus'' group – possibly a distinct genus – is known as basketflowers. "Cornflower" is used for a few species, but that term more often specifically means either '' C. cyanus'' (the annual cornflower) or '' Centaurea montana'' (the perennial cornflower). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genus '' Centaurium''.Keil (2006), Keil & Ochsmann (2006). The name is said to be in reference to Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carduus
''Carduus'' is a genus of flowering plants in the family Asteraceae, and the tribe Cardueae, one of two genera considered to be true thistles, the other being ''Cirsium''. Plants of the genus are known commonly as plumeless thistles.''Carduus''. Integrated Taxonomic Information System (ITIS).''Carduus''. Flora of North America. They are native to temperate Eurasia and North Africa, and several are known elsewhere as . This genus is noted for its disproportionat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onopordum
''Onopordum'', or cottonthistle, is a genus of plants in the tribe Cardueae within the family Asteraceae. They are native to southern Europe, northern Africa, the Canary Islands, the Caucasus, and southwest and central Asia. They grow on disturbed land, roadsides, arable land and pastures. They are biennials (rarely short-lived perennials) with branched, spinose winged stems, growing 0.5–3 m tall. In the first season they form a basal rosette of gray-green felted leaves and rarely a few flower heads. In the second season they grow rapidly to their final height, flowering extensively, and then die off after seed maturation. The leaves are dentate or shallowly lobed to compound with several pinnatifid or deeply cut leaflets, and strongly spiny. The terminal flower head is typical for thistles, a semi-spherical to ovoid capitulum with purple (seldom white or pink) disc florets. There are no ray florets. The receptacle is glabrous with dentate margins. The tube of the corol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlina
''Carlina'' is a genus of flowering plants in the family Asteraceae. It is distributed from Madeira and the Canary Islands across Europe and northern Africa to Siberia and northwestern China.Kovanda, M. (2002)Observations on ''Carlina biebersteinii''.''Thaiszia Journal of Botany'' 12(1), 75-82. Plants of the genus are known commonly as carline thistles.''Carlina''. In: Greuter, W. & E. von Raab-Straube. (Eds.) Compositae. Euro+Med Plantbase. Description ''Carlina'' species are very similar to true thistles (genus ''Cirsium'') in morphology (biology), morphology, and are part of the thistle tribe, Cardueae. Most are biennial herbs, but the genus includes annuals, perennials, shrubs, and dwarf trees, as well. The largest reach about 80 centimeters tall. The stems are upright a ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynara
''Cynara'' is a genus of thistle-like perennial plants in the family Asteraceae. They are native to the Mediterranean region, the Middle East, northwestern Africa, and the Canary Islands. The genus name comes from the Greek ''kynara'', which means "artichoke".''Cynara''. Flora of North America. Among the better known species in this genus include: * '' Cynara cardunculus'' is the cardoon, artichoke thistle, or wild artichoke. The stems of cultivated varieties are used as food around the Mediterranean. It is also the source of a coagulant used as an alternative to rennet in the manufacture of |
Floral Emblem
In a number of countries, plants have been chosen as symbols to represent specific geographic areas. Some countries have a country-wide floral emblem; others in addition have symbols representing subdivisions. Different processes have been used to adopt these symbols – some are conferred by government bodies, whereas others are the result of informal public polls. The term floral emblem, which refers to flowers specifically, is primarily used in Australia and Canada. In the United States, the term state flower is more often used. National plants Africa Mauritius The national flower of Mauritius is ''Ruizia boutoniana''. Nigeria The national flower of Nigeria is ''Costus spectabilis'' which is commonly known as Yellow Trumpet. Seychelles The national flower of the Seychelles is the tropicbird orchid (known locally as ''orkid payanke''), ''Angraecum eburneum''. South Africa The national flower of South Africa is the Protea cynaroides, King Protea, ''Protea cynaroides''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirsium Heterophyllum
''Cirsium heterophyllum'', the melancholy thistle, is an erect spineless herbaceous perennial flowering plant in the family Asteraceae. It is native to Europe and western Asia, where it grows in upland meadows, grasslands, road verges and open woodland. Description Unusually for a thistle, ''Cirsium heterophyllum'' lacks spines. Growing tall, the plant forms creeping stolons (runners). The stem is grooved but unwinged, more-or-less branchless, and cottony. The leaves are green and hairless above, thick white-felted underneath. The basal leaves are lanceolate with petioles and softly prickly edges, and grow long, and wide. The upper leaves do not have petioles, clasping the stem with cordate (heart-shaped) bases. The flower heads are 3 to 5 cm long and wide, the flowers red-purple, appearing from July to August. Distribution ''Cirsium heterophyllum'' is a species of northern Europe and Central Asia. It is native in upland areas of Scotland and northern England and no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carthamus
The genus ''Carthamus'', the distaff thistles, includes plants in the family Asteraceae. The group is native to Europe, North Africa, and parts of Asia. The flower has been used since ancient times in the Philippines, which it has been called ''kasubha'' by the Tagalog people. The best known species is the safflower ''(Carthamus tinctorius Safflower (''Carthamus tinctorius'') is a highly branched, herbaceous, thistle-like annual plant in the family Asteraceae. It is one of the world's oldest crops; today, it is commercially cultivated for vegetable oil extracted from the seeds. ...).'' ; Species References External links Jepson Manual Treatment* * Asteraceae genera {{Cynareae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirsium Spinosissimum
''Cirsium spinosissimum'', common name spiniest thistle, is a European species of thistle which grows in dry rocky areas. It is found in France, Italy, Germany, Switzerland, Austria, and the Balkans. The plant is between tall. Leaves, stems, and the sides of the flower head bear long, sharp spines, hence the name of the plant. Flower heads contain numerous disc florets but no ray florets Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger fa ..., the florets off-white sometimes with a purple tinge. References spinosissimum Flora of Europe Plants described in 1753 Taxa named by Carl Linnaeus Taxa named by Giovanni Antonio Scopoli {{Cynareae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardueae
The Cardueae are a tribe (biology), tribe of flowering plants in the daisy family (Asteraceae) and the subfamily Carduoideae. Most of them are commonly known as thistles; four of the best known genera are ''Carduus'', ''Cynara'' (containing the widely eaten artichoke), ''Cirsium'', and ''Onopordum''. They are annual plant, annual, biennial plant, biennial, or perennial plant, perennial Herbaceous plant, herbs. Many species are thorn (botany), thorny on leaves, stems, or Involucral bract, involucre, and some have latex, laticifers or resin conduits. Almost 80 genera comprising 2500 species are assigned to this tribe, native of temperate regions of Europe and Asia (especially the Mediterranean region and Minor Asia), Australia and tropical Africa; only three genera contain species native to the Americas.Bremer 1994 ''Asteraceae'': Cladistic and Classification [Tribe ''Carduae'': 112-156] Taxonomy The correct name for the tribe has been disputed. In 1806, Jean-Baptiste Lamarck and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
