Crossword Genius

Pluck below pith of violet plant (9,5)

Ross

I believe the answer is:

olfactory nerve

I'm a little stuck... Click here to teach me more about this clue!

'pluck below pith of violet plant' is the definition.
I can't tell whether this definition defines the answer.

'pluck below pith of violet plant' is the wordplay.
I cannot quite understand how this works, but
'pluck' could be 'nerve' (I've seen this before) and 'nerve' is present in the answer.
'of' could be 'o' and 'o' is found in the answer.
'plant' could be 'factory' and 'factory' is located in the answer.
A single letter 'l' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app