I will have to take off the torque plate and have a look /feel up in the mucky darkness, that is that area of my car. A previous owner has either rustproofed or re-undersealed the car with a bitumous looking product and everything is covered in sticky black. And it LOVES adhereing the undersides of fingernails.
One thing I did notice was the name attached to your pic!
'Horopito' is a New Zealand native shrub used by some for culinery uses and also a small settlement in the central North Island. It is home to a famous long established car wrecking yard featured in the NZ film "Smash palace".