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Asteraceae

Brickellia grandiflora (Hook.) Nutt. was reported from RI by Kartesz (1999), based on George (1992); however, George (1999) stated this species had questionable naturalization in RI.

See list of 19 genera in 1a
Asteraceae 1
1a. Capitula composed entirely of bisexual ray flowers [Figs. 395,435,471]; plants usually with a milky latex
See list of 116 genera in 1b
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1b. Capitula composed entirely of disk flowers or both ray and disk flowers, the ray flowers, when present, restricted to the margin of the capitulum and unisexual or sterile [Figs. 376,431,447]; plants commonly without a milky latex
- See list of 52 genera in 2a
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  2a. Capitula without marginal, zygomorphic flowers that bear a ray, all the flowers tubular and actinomorphic, with or without apical teeth or lobes [Figs. 374,390,431]
  - See list of 29 genera in 3a
    Asteraceae 2
    3a. Pappus composed of capillary bristles (at least in large part), each bristle smooth, barbellate, or plumose [Fig. 391]
  - See list of 24 genera in 3b
    Asteraceae 3
    3b. Pappus composed entirely of scales (each scale divided at the apex into many bristles in Dyssodia), or awns, a short crown, or entirely absent [Fig. 382]
- See list of 75 genera in 2b
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  2b. Capitula with zygomorphic ray flowers near the periphery, the rays sometimes minute and inconspicuous in drying [Figs. 401,416,464]
  - See list of 37 genera in 4a
    Asteraceae 4
    4a. Rays of various colors, but not yellow or orange
  - See list of 46 genera in 4b
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    4b. Rays largely or entirely yellow or orange (sometimes yellow only at the base and white distally in Glebionis coronaria and Layia platyglossa; the rays
    - See list of 15 genera in 5a
      Asteraceae 5
      5a. Pappus composed partly or entirely of capillary bristles (short scales may also be present; ray flowers sometimes lacking pappus) [Figs. 438,468]
    - See list of 31 genera in 5b
      Asteraceae 6
      5b. Pappus composed entirely of scales (each scale divided at the apex into many bristles in Dyssodia), or awns, or a crown, or completely absent

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Show photos of: Each photo represents one genus in this family.