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  • most abundant in tropics, subtropics, and warm-temperate regions, evidently absent from alpine and arctic regions. Genera ca. 65, species ca. 900 (12 genera
    8 KB (586 words) - 23:00, 5 November 2020
  • separate from Erigeron, more closely related to Conyza. Studies by W. Huber and colleagues (e.g., Huber 1993; Huber and Ö. Nilsson 1995) and R. D. Noyes
    92 KB (1,874 words) - 21:04, 5 November 2020