If a forager rubs the stem of a potential *Galium aparine* plant and it grips their finger, what primary identification marker confirms they have found Goosegrass?
Answer
The hooked nature of the bristles allowing it to grip
The tell-tale sign of *Galium aparine* is its adhesion; gently brushing a finger along the stem should reveal that it grips due to the characteristic tiny hooks present on the surface.

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