| Centaurea diluta | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Centaurea |
| Species: | C. diluta |
| Binomial name | |
| Centaurea diluta Aiton | |
Centaurea diluta, the lesser star-thistle, [1] North African knapweed, [2] or pale-flowered centaury, [3] is a species of Centaurea . It is native to southwestern Europe and northern Africa.
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.
Rhaponticum repens, synonyms including Acroptilon repens and Leuzea repens, with the common name Russian knapweed, is a species of bushy rhizomatous perennial, up to 80 cm tall. Stems and leaves are finely arachnoid-tomentose becoming glabrous and green with age. The rosette leaves are oblanceolate, pinnately lobed to entire, 2–3 cm wide by 3–8 cm long. The lower cauline leaves are smaller, pinnately lobed; the upper leaves become much reduced, sessile, serrate to entire. The heads are numerous terminating the branches. Flowers are pink to purplish, the marginal ones not enlarged. The outer and middle involucral bracts are broad, striate, smooth with broadly rounded tips; the inner bracts are narrower with hairy tips. Pappus present with bristles 6–11 mm long. Fruit is a whitish, slightly ridged achene.
Centaurea cyanus, commonly known as cornflower or bachelor's button, is an annual flowering plant in the family Asteraceae native to Europe. In the past, it often grew as a weed in cornfields, hence its name. It is now endangered in its native habitat by agricultural intensification, particularly by over-use of herbicides. However, Centaurea cyanus is now also naturalised in many other parts of the world, including North America and parts of Australia through introduction as an ornamental plant in gardens and as a seed contaminant in crop seeds.
Centaurea calcitrapa is a species of flowering plant known by several common names, including common star thistle, red star-thistle and purple star thistle. It is native to Europe but is known across the globe as an introduced species and often a noxious weed. The species name calcitrapa comes from the word caltrop, a type of weapon covered in sharp spikes.
Centaurea montana, the perennial cornflower, mountain cornflower, bachelor's button, montane knapweed or mountain bluet, is a species of flowering plant in the family Asteraceae, endemic to Europe. It is widespread and common in the more southerly mountain ranges of Europe, but is rarer in the north. It escapes from gardens readily, and has thereby become established in the British Isles, Scandinavia and North America. This plant has become an invasive species in British Columbia, Canada. Centaurea montana grows in meadows and open woodland in the upper montane and sub-alpine zones, in basic areas. It grows to 30–70 centimetres (12–28 in) tall, and flowers mainly from May to August.
Jacobaea maritima, commonly known as silver ragwort, is a perennial plant species in the genus Jacobaea in the family Asteraceae, native to the Mediterranean region. It was formerly placed in the genus Senecio, and is still widely referred to as Senecio cineraria; see the list of synonyms (right) for other names.
Centaurea cineraria, the velvet centaurea, also known as dusty miller and silver dust, is a species of flowering plant in the family Asteraceae endemic to southern Italy. In natural settings, it grows on coastal cliffs, ranging from 0–350 m above sea level, hence the plant's Italian name, fiordaliso delle scogliere. Mature plants may reach 80 centimetres (31.5 in) in height. The species produces purple flowers.
Centaurea melitensis is an annual plant in the family Asteraceae, 1 to 11 decimetres high, with resin-dotted leaves and spine-tipped phyllaries. This plant is native to the Mediterranean region of Europe and Africa. It was introduced to North America in the 18th century; the first documented occurrence in California is in the adobe of a building constructed in San Fernando in 1797. It is also naturalized on a number of Pacific islands.
Centaurea gymnocarpa, also known as Capraian cornflower or centaury of Capraia, is a species of flowering plant in the family Asteraceae. It is a rare species endemic to Italy found only on Capraia, a small island located in the Tuscan Archipelago, with the species being distributed across eight subpopulations on the island's surface. Its natural habitats are Mediterranean-type shrubby vegetation and rocky areas, colonizing in the cracks and fissures of cliffs.
Centaurea iberica, the Iberian knapweed or Iberian star-thistle, is a species of Centaurea. It is native to southeastern Europe and southwestern Asia. It is known elsewhere as an introduced species and a noxious weed.
Centaurea jacea, brown knapweed or brownray knapweed, is a species of herbaceous perennial plants in the genus Centaurea native to dry meadows and open woodland throughout Europe. It grows to 10–80 centimetres (4–31 in) tall, and flowers mainly from June to September. It has simple leaves that are alternate in arrangement.
Angelica pachycarpa, the Portuguese angelica, is a herbaceous perennial plant native to north western Spain and western Portugal, and naturalised in New Zealand. It inhabits forests, grasslands and stream sides and is occasionally grown as an ornamental garden subject for its glossy foliage and umbels of white flowers.
Carex distans, commonly known as distant sedge, is a plant species in the sedge family, Cyperaceae. It is native to Europe and North Africa. It is part of a complex of similar species that occur across Eurasia. Its relatives include Carex diluta of central Asia, which has also been introduced to North America in Montana. Carex distans has been introduced to US states including Maryland and Pennsylvania. More recently, it was found in Oregon. There is a report from Victoria, Australia as well.
Centaurea alba is a species of Centaurea found in the Iberian Peninsula in southern and central Spain and in a small neighbouring area in the interior of Portugal. There are three recognised subspecies, and of one subspecies, the nominate, there are furthermore three varieties.
Centaurea ammocyanus is a species of flowering plant in the family Asteraceae. It is native to Western Asia.
Centaurea aspera, the rough star-thistle, is a species of Centaurea found in Europe and in New York, United States.
Centaurea horrida is a species of the genus Centaurea which is only found growing in Sardinia and associated islands. Due to their limited ability to disperse, they are isolated from other environments, and have a very low colonizing ability.
Centaurea paniculata, the Jersey knapweed, is a species of Centaurea found in France and northern Italy.
Rhaponticoides is a genus of flowering plants in the family Asteraceae, found in northern Africa, southern and eastern Europe, and western Asia as far east as Mongolia. They were resurrected from Centaurea.
Dariya Nikitichna Dobroczajeva was a Ukrainian botanist and university teacher.
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