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The pollen of Centaurea cyanus is used by several different insect species. Insects of the orders Hymenoptera and Diptera are particularly attracted by the flower. [19] As Centaurea cyanus is a self-incompatible species, it needs external pollination. The nectar of Centaurea cyanus is very sweet with a sugar content of
Centaurea (/ ˌ s ɛ n t ɔː ˈ r iː ə /) [1] 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.
Centaurea cyanus, common in the native lands of Novalis. A blue flower (German: Blaue Blume) was a central symbol of inspiration for the Romanticism movement, and remains an enduring motif in Western art today. [1] It stands for desire, love, and the metaphysical striving for the infinite and unreachable. It symbolizes hope and the beauty of ...
Centaurea cyanus L. Centaurea cylindrocephala Bornm. Centaurea cyprensis (Holub) T.Georgiadis; Centaurea cyrenaica Bég. & Vacc. Centaurea dalmatica A.Kern. Centaurea damascena Boiss. Centaurea daralagoezica (Fomin) Greuter; Centaurea davisii Wagenitz; Centaurea debdouensis Breitw. & Podlech; Centaurea debeauxii Godr. & Gren. Centaurea ...
Protocyanin is an anthocyanin pigment that is responsible for the red colouration of roses, but in cornflowers is blue. The pigment was first isolated in 1913 from the blue cornflower (Centaurea cyanus), [1] and the identical pigment was isolated from a red rose in 1915. [2]
Centaurea cyanoides, the Syrian cornflower, is a species of Centaurea. It is native to Cyprus, Israel, Jordan, Lebanon, and Syria. [1] Centaurea cyanoides looks similar to the European cornflower Centaurea cyanus although C.cyanoides is much smaller, only 2-3 cm wide. It grows only in wild areas and is not in cultivated fields.
Centaurea montana, the perennial cornflower, [1] 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.
The occurrence of Centaurea cyanus strongly decreased during the last decades due to improved seed cleaning, more intensive nitrogen fertilization and herbicide use. However, Centaurea cyanus has become more common in cropland due to an increase in crop rotations dominated by winter cereals and rapeseed and the use of more selective herbicides ...