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Cornflower
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SCIENTIFIC NAME: Centaurea cyanus

ALSO KNOWN AS: Knapweed and Bachelor Butons

PLANT TYPE: Annual.

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Commonly grown garden plant which sometimes naturalizes if conditions support its growth. The petals are edible. Most of the time the flowers produced by this plant are blue.

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This plant grows to a height of one to three feet. Flowers form from May through August. Quercetin and apigenin are produced in the flower head and leaves of this plant. This plant is native to Western Asia and Europe, but has naturalized widely all around the planet.

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Anthocyanins and Other Flavonoids as Flower Pigments from Eleven Centaurea Species

Anthocyanins and other flavonoids were isolated from the flowers of eleven Centaurea species. The genus Centaurea, family Asteraceae, consists of ca. 500 species, and is distributed in Europe, tropical Africa, North America and Australia. These compounds included quercetin and apigenin.
Article at sagepub.com


Cornflower at WikiPedia

Centaurea cyanus contains a wide range of pharmacologically active compounds, such as flavonoids, anthocyanins and aromatic acids. Furthermore, extracts of the flower head and vegetative parts of the plant were shown to have gastroprotective effects due to their content of quercetin, apigenin and caffeic acid derivates.

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