families

[Curtis Clark]

At 10:12 AM 3/3/99 -0600, Thomas G. Lammers wrote:
>Art Cronquist wrote somewhere that he felt the family's success was due to
>innovations in chemical defenses against predation, e.g., sesquiterpene
>lactones.

Sesquiterpene lactones are handy, but not all Asteraceae have them. It
would be interesting to see though character analysis at what point in the
family they evolved.

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