Crossword Genius

Tensest tingling comes from Urtica dioica (8,7)

Ross

I believe the answer is:

stinging nettles

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

'iurtica dioicai' is the definition.
I can't tell whether this defines the answer.

'tensest tingling comes' is the wordplay.
'tensest tingling' anagrams to 'STINGING NETTLES'.
However, I'm not clear how the anagram is indicated.

'from' is the link.

Can you help me to learn more?

(Other definitions for stinging nettles that I've seen before include "growing source of irritation" , "Painful weeds" .)

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