heterotypic synonyms:
Pittosporum crassifolium Banks & Soland. ex Kirk;
protologue: N.Z. Inst. Trans. & Proc. 3: 161 (1871)
2 802948 Pittosporum ralphii KirkNat. Hist. Mus., London (The Endeavour Botanical Illustrations): (1768-1771)
2 802948 Pittosporum ralphii KirkBank's Florilegium: t. 413 (1772-1784)
5 802948 Pittosporum ralphii KirkT. Kirk, Forest Fl. New Zealand: t. 14 (1889)