|
Heliantheae
The Heliantheae (sometimes called the sunflower tribe) are the third-largest tribe in the sunflower family (Asteraceae). With some 190 genera and nearly 2500 recognized species, only the tribes Senecioneae and Astereae are larger. The name is derived from the genus ''Helianthus'', which is Greek for sun flower. Most genera and species are found in North America (particularly in Mexico) and South America. A few genera are pantropical. Most Heliantheae are herbs or shrubs, but some grow to the size of small trees. Leaves are usually hairy and arranged in opposite pairs. The anthers are usually blackened. The above statements about the size and distribution of the tribe apply to a broad definition of Heliantheae, which was followed throughout the 20th century. Some recent authors break the tribe up into a dozen or so smaller tribes. Uses Commercially important plants in the Heliantheae include sunflower and Jerusalem artichoke. Many garden flowers are also in this group, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinacea
''Echinacea'' is a genus of herbaceous flowering plants in the daisy family. It has ten species, which are commonly called coneflowers. They are found only in eastern and central North America, where they grow in moist to dry prairies and open wooded areas. They have large, showy heads of composite flowers, blooming in summer. The generic name is derived from the Greek word ('), meaning "sea urchin", due to the spiny central disk. These flowering plants and their parts have different uses. Some species are cultivated in gardens for their showy flowers. Two of the species, '' E. tennesseensis'' and '' E. laevigata'', are listed in the United States as endangered species. '' Echinacea purpurea'' is used in traditional medicine. Although commonly sold as a dietary supplement, there is insufficient scientific evidence that ''Echinacea'' products are effective or safe for improving health or treating any disease. Description ''Echinacea'' species are herbaceous, drought-toler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coreopsideae
Coreopsideae is a tribe of flowering plants belonging to the Asteroideae subfamily. It includes widely cultivated genera such as ''Cosmos'' and ''Dahlia''. A similar group has been recognized since 1829, generally as part of the tribe Heliantheae ( Cassini, 1819). In the late 20th century, molecular studies caused a slightly redefined version of this group to be recognized as its own tribe, Coreopsideae. The larger version of Heliantheae was split into tribes including Bahieae, Chaenactideae, Coreopsideae, Helenieae and, finally, Heliantheae (''sensu stricto''). Within the tribe, the traditional definition of genera based on flower and fruit characters does not reflect evolutionary relationships as inferred through molecular phylogenetics. The tribe is characterized by shiny green bracts at the base of the flower head in two rows: an inner row of tightly spaced bracts and an outer row of a smaller number pointing downward. It includes five genera that use carbon fixation: ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madieae
Madieae is a tribe of flowering plants in the family Asteraceae. It is sometimes considered a subtribe of Heliantheae. Notable species include the tarweeds of the Western United States as well as the silverswords of Hawaii. Subtribes and genera Madieae subtribes and genera recognized by the Global Compositae Database as of April 2022: *Subtribe Arnicinae **''Arnica'' *Subtribe Baeriinae **''Amblyopappus'' **''Baeriopsis'' **'' Constancea'' **'' Eriophyllum'' **''Lasthenia'' **''Monolopia'' **''Pseudobahia'' **''Syntrichopappus'' *Subtribe Hulseinae **''Eatonella'' **'' Hulsea'' *Subtribe Madiinae **'' Achyrachaena'' **'' Adenothamnus'' **''Anisocarpus'' **''Argyroxiphium'' **''Blepharipappus'' **''Blepharizonia'' **'' Calycadenia'' **''Carlquistia'' **'' Centromadia'' **'' Deinandra'' **''Dubautia'' **''Harmonia'' **'' Hemizonella'' **'' Hemizonia'' **'' Holocarpha'' **'' Holozonia'' **''Jensia'' **'' Kyhosia'' **'' Lagophylla'' **''Layia'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helenieae
Helenieae is a tribe of the plant family Asteraceae. The type genus is ''Helenium'', but the best known members of the tribe are the '' Gaillardia''. Helenieae are usually placed in their own tribe, but some authors include this and several other tribes as subtribes within a broader definition of the tribe Heliantheae. Subtribes and genera Helenieae subtribes and genera recognized by the Global Compositae Database: *Subtribe Gaillardiinae **'' Balduina'' **'' Gaillardia'' **''Helenium ''Helenium'' is a genus of annuals and herbaceous perennial plants in the family Asteraceae, native to the Americas. They bear yellow or orange daisy-like composite flowers. A number of these species (particularly ''Helenium autumnale'') have ...'' *Subtribe Marshalliinae **'' Marshallia'' *Subtribe Plateileminae **'' Plateilema'' *Subtribe Psathyrotinae **'' Pelucha'' **'' Psathyrotes'' **'' Trichoptilium'' *Subtribe Tetraneurinae **'' Amblyolepis'' **'' Baileya'' **' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecioneae
Senecioneae is the largest tribe of the Asteraceae, or the sunflower family, comprising over 150 genera and over 3,500 species. Almost one-third of the species in this tribe are placed in the genus ''Senecio''. Its members exhibit probably the widest possible range of form to be found in the entire plant kingdom, and include annuals, minute creeping alpines, herbaceous and evergreen perennials, shrubs, climbers, succulents, trees, and semi- aquatic plants. Plants in this tribe are responsible for more livestock poisonings than all other plants combined. Its members usually contain liver and kidney toxic and carcinogenic unsaturated pyrrolizidine alkaloids in ''Senecio'' and furanoeremophilanes in ''Tetradymia''. A number of species are well known in horticulture. Classification Since the time of Bentham, the "premier systematic botanist of the nineteenth century", considerable efforts have been made to classify and understand the striking morphological diversity in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helianthus
''Helianthus'' () is a genus comprising about 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. Except for three South American species, the species of ''Helianthus'' are native to North America and Central America. The best-known species is the common sunflower (''Helianthus annuus''), whose round flower heads in combination with the ligules look like the Sun. This and other species, notably Jerusalem artichoke (''H. tuberosus''), are cultivated in temperate regions and some tropical regions, as food crops for humans, cattle, and poultry, and as ornamental plants. The species ''H. annuus'' typically grows during the summer and into early fall, with the peak growth season being mid-summer. Several perennial ''Helianthus'' species are grown in gardens, but have a tendency to spread rapidly and can become aggressive. On the other hand, the whorled sunflower, ''Helianthus verticillatus'', was listed as an endanger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinnia
''Zinnia'' is a genus of plants of the tribe Heliantheae within the family Asteraceae. They are native to scrub and dry grassland in an area stretching from the Southwestern United States to South America, with a centre of diversity in Mexico. Members of the genus are notable for their solitary long-stemmed 12 petal flowers that come in a variety of bright colors. The genus name honors German master botanist Johann Gottfried Zinn (1727–59). Description Zinnias are annuals, shrubs, and sub-shrubs native primarily to North America, with a few species in South America. Most species have upright stems but some have a lax habit with spreading stems that mound over the surface of the ground. They typically range in height from 10 to 100 cm tall (4" to 40"). The leaves are opposite and usually stalkless (sessile), with a shape ranging from linear to ovate, and a color ranging from pale to medium green. Zinnia's composite flowers consist of ray florets that surround disk flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudbeckia
''Rudbeckia'' () is a plant genus in the Asteraceae or composite family. Rudbeckia flowers feature a prominent, raised central disc in black, brown shades of green, and in-between tones, giving rise to their familiar common names of coneflowers and black-eyed-susans. All are native to North America, and many species are cultivated in gardens for their showy yellow or gold flower heads that bloom in mid to late summer. The species are herbaceous, mostly perennial plants (some annual or biennial) growing to 0.5–3.0 m tall, with simple or branched stems. The leaves are spirally arranged, entire to deeply lobed, and 5–25 cm long. The flowers are produced in daisy-like inflorescences, with yellow or orange florets arranged in a prominent, cone-shaped head; "cone-shaped" because the ray florets tend to point out and down (are decumbent) as the flower head opens. A large number of species have been proposed within ''Rudbeckia'', but most are now regarded as synonyms of the lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexandre De Cassini
Count Alexandre Henri Gabriel de Cassini (9 May 1781 – 23 April 1832) was a French botanist and naturalist, who specialised in the sunflower family (Asteraceae) (then known as family Compositae). He was the youngest of five children of Jacques Dominique, Comte de Cassini, famous for completing the map of France, who had succeeded his father as the director of the Paris Observatory. He was also the great-great-grandson of famous Italian-French astronomer, Giovanni Domenico Cassini, discoverer of Jupiter's Great Red Spot and the Cassini division in Saturn's rings. The genus '' Cassinia'' was named in his honour by the botanist Robert Brown. He named many flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...s and new genera in the sunflower family (Asteraceae) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensu Stricto
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular concept, but it also appears in expressions that indicate the convention or context of the usage. Common qualifiers ''Sensu'' is the ablative case of the noun ''sensus'', here meaning "sense". It is often accompanied by an adjective (in the same case). Three such phrases are: *''sensu stricto'' – "in the strict sense", abbreviation ''s.s.'' or ''s.str.''; *''sensu lato'' – "in the broad sense", abbreviation ''s.l.''; *''sensu amplo'' – "in a relaxed, generous (or 'ample') sense", a similar meaning to ''sensu lato''. Søren Kierkegaard uses the phrase ''sensu eminenti'' to mean "in the pre-eminent r most important or significantsense". When appropriate, comparative and superlative adjectives may also be used to convey the meaning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaenactideae
Chaenactideae is a tribe of flowering plants in the subfamily Asteroideae of the family Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w .... Chaenactideae genera recognized by the Global Compositae Database as of April 2022: *'' Chaenactis'' *'' Dimeresia'' *'' Orochaenactis'' References Asteraceae tribes {{Asteroideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bahieae
Bahieae is a tribe of plants in the family Asteraceae, mostly native to North America and Mexico. It was described by Baldwin et al. in 2002. Taxonomy Bahieae genera recognized by the Global Compositae Database as of April 2022: *'' Achyropappus'' *''Apostates'' *''Bahia'' *'' Bartlettia'' *'' Chaetymenia'' *'' Chamaechaenactis'' *'' Espejoa'' *'' Florestina'' *'' Holoschkuhria'' *''Hymenopappus'' *'' Hymenothrix'' *'' Hypericophyllum'' *'' Loxothysanus'' *'' Nothoschkuhria'' *''Palafoxia'' *'' Peucephyllum'' *'' Picradeniopsis'' *'' Platyschkuhria'' *'' Psathyrotopsis'' *''Schkuhria ''Schkuhria'' is a genus of flowering plants in the tribe Bahieae within the family Asteraceae. False threadleaf is a common name. The genus was named in honour of Christian Schkuhr (1741-1811), a German gardener and physical scientist at the Un ...'' *'' Thymopsis'' References Asteraceae tribes {{Asteroideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Zinnia")
