Family: Asteraceae
[Chrysanthemum serotinum L., more... ]
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Leaf blades 50-120+ × 15-30+ mm. Ray laminae 10-25 mm. Cypselae 2-3 mm. 2n = 18.
Flowering Jun-Oct. Disturbed sites, fields, roadsides; 0-200 m; introduced; Ont., Que.; Conn., Mass., Mich., Minn.; e Europe; Asia.