A new species, Wikstroemia johnplewsii, is described and illustrated.
This distinctive species is restricted to upper montane mesic to wet f
orest on the island of Hiva Oa (Marquesas Islands in French Polynesia)
; it differs from the only other Wikstroemia species in the Marquesas,
W. coriacea, which occurs widely in Polynesia, by its ovate-elliptic
to suborbicular, subsessile leaves and long, 9-27-flowered, racemose i
nflorescences with an elongate peduncle and inflorescence axis.