Locally common on the plateau / cliff ecotone and then immediately below this on the first tier of cliffs and associated serpentinite talus. A large population - the largest of this subspecies in New Zealand. Plants characteristically exhibiting much die back (a feature of this plant) and scarcely flowering / fruiting unlike the associated P. edgerleyi. At North Cape Pomaderris paniculosa subsp. novae-zelandiae is completely confined to the serpentinite area.
ID as per signage! ;-)
Very thin canes; note that I'm in Oregon, not CA.