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Magnoliopsida
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Asterales
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Asteraceae
Centaurea
Genus · 3 species with a result in Ohio
Cornflower
Centaurea cyanus
· Flowering plants
Photo © Yaman Omran · CC BY-NC 4.0
Mid-May to mid-September, middle week Jun 28 – Jul 4
Tyrol knapweed
Centaurea nigrescens
· Flowering plants
Photo © Luca Boscain · CC BY-NC 4.0
Late July to late October, middle week Sep 6–12
spotted knapweed
Centaurea stoebe
· Flowering plants
Photo © Lioneska · CC BY-NC 4.0
Missing records do not mean a species is absent.
