1. Leucanthemella serotina (Linnaeus) Tzvelev in V. L. Komarov et al., Fl. URSS. 26: 139. 1961.
Leucanthémelle tardive
Chrysanthemum serotinum Linnaeus, Sp. Pl. 2: 888. 1753; C. uliginosum (Waldtein & Kitaibel ex Willdenow) Persoon
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.
