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It is an annual plant growing to 16-35 inches tall, with grey-green branched stems. The leaves are lanceolate, 1–4 cm long. The flowers are most commonly an intense blue colour, produced in flowerheads (capitula) 1.5–3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red.
Is a small annual flowering plant in the family Asteraceae, native to Europe. In the past it often grew as a weed in crop fields, hence its name. It is now endangered in its native habitat by agricultural intensification, particularly over-use of herbicides, destroying its habitat.
Spotted on Jun 10, 2012
Submitted on Jun 28, 2012
and 6 other people favorited this spotting