Ryticaryum kaorahai (Icacinaceae s.str.), a new species from Halmahera, and the first new species in the genus for over one hundred years

Ryticaryum kaorahai (Icacinaceae s.str.), a new species from Halmahera, and the first new species in the genus for over one hundred years

A new species of Ryticaryum, Ryticaryum kaorahai Utteridge & Arifiani, collected from Weda Bay, Halmahera, is described as new to science here. This species is unique in the relatively large oblong-elliptic leaves with unequal bases, and the large fruits to 4.5 cm long. It is the first arborescent member of the Icacinaceae s.str., to be described from Malesia in over a century.