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Description
Asteraceae [link]
Evolution
Diversification of Asteraceae may have been within 42-36 million years, the stem group perhaps being up to 49 million years old.
It is still unknown whether the precise cause of their great success was the development of the calathid, their ability to store energy as fructans (mainly inulin), which is an advantage in relatively dry zones, or some combination of these and possibly other factors.

featured [link]

Description
Asteraceae [link]
Evolution
Diversification of Asteraceae may have been within 42-36 million years, the stem group perhaps being up to 49 million years old.
It is still unknown whether the precise cause of their great success was the development of the calathid, their ability to store energy as fructans (mainly inulin), which is an advantage in relatively dry zones, or some combination of these and possibly other factors.

featured [link]