Boring notices for wood spirits (6)

I believe the answer is:

dryads

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'wood spirits' is the definition.
'dryads' can be an answer for 'spirits' (I've seen this before). I'm not certain of the 'wood' bit.

'boring notices' is the wordplay.
'boring' becomes 'dry' (dry can mean dull or boring).
'notices' becomes 'ads' (advertisements).
'dry'+'ads'='DRYADS'

'for' is the link.

Can you help me to learn more?

(Other definitions for dryads that I've seen before include "Nymphs of the woods" , "Tree-nymphs." , "spirits" , "Wood nymphs of legend" , "Tree nymphs" .)

I've seen this clue in the Sydney Morning Herald.

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