Discoid capitula
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Image on the left represents Sinclairia palmeri, the one in the middle is Cynara cardunculus (artichokes), and the one on the right Bartlettina sordida (notice long style appendages characteristic of members of Asteroideae: tribe Eupatorieae)
Radiate Capitula
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Image on the left represents Montanoa grandiflora and the one on the right Dyscritothamnus mirandae
Ligulate Capitula
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Lygodesmia texana (notice the five lobes at distal end of ligule). © Jose L. Panero
