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Key to Flaveria

Asteraceae

Flaveria

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1 Heads borne in axillary glomerules; disc flowers 0-1 (-2)
1 Heads borne in terminal arrays; disc flowers (2-) 3-14.
  2 Plants annual; cypselas 2.0-3.6 mm long; lower leaves either petiolate and 10-25 (-70) mm wide, or sessile and 6-22 mm wide.
    3 Heads arrayed in scorpioid cymes; ray blades to 1 mm long; [FL, AL, and GA]
    3 Heads arrayed in compound corymbs; ray blades 1.5-2.5 mm long; [OK and TX westwards]
  2 Plants perennial; cypselas 1.2-1.8 mm long; lower leaves sessile, 1-17 mm wide.
      4 Disc flowers 9-14; calyculus bractlets surpassing the involucres
      4 Disc flowers (2-) 5-10; calyculus bractlets shorter than the involucres.
        5 Disc flowers (5-) 7-10; [TX]
        5 Disc flowers (2-) 5-7 (-8); [FL]