Ranunculus reflexus. Mārūrū. Hairy buttercup.
Ka meatia te maruru hai rongoa. The hairy buttercup is made into medicine. (Williams 1971)
Plant used for toothache, inflamed eyes (redness in corners) and abrasions (Best 1906).
"Abrasions often treated by bathing with the sap of a plant named mārūrū or kōpukupuku (Ranunculus plebius) [sic.] which causes a smarting sensation when applied" (Best 1904, 77).
Related pharmacology and chemistry in Brooker, Cambie and Cooper 1987.