Recollected Yell Island in bloom (5)

I believe the answer is:

lilac

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'bloom' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for lilac that I've seen before include "I call (anag)" , "Pale mauve colour for a flower" , "garden ornamental" , "Tree with purple or white flowers" , "Plant" .)

I've seen this clue in The Guardian.

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