QUINTINIA A.DC.
- Quintinia brassii Reeder, J. Arnold Arbor. 27: 280 (1946); Sun et al., Plants 13 (2024); POWO (2026). = New Guinea. = PAPUA.
- Quintinia lanceolata Reeder, J. Arnold Arbor. 27: 278 (1946); Sun et al., Plants 13 (2024); POWO (2026). = New Guinea. = PAPUA.
- Quintinia nutantiflora Schltr., Nova Guinea 12: 488 (1917); Sun et al., Plants 13 (2024); POWO (2026). = New Guinea. = PAPUA.
SPHENOSTEMON Baill.
- Sphenostemon arfakensis (Gibbs) Steenis & Erdtman, Svensk Bot. Tidskr. 49: 22 (1955); Sun et al., Plants 13 (2024); POWO (2026). = Endemic to Indonesian New Guinea: Arfak Mts. = PAPUA. = Nouhuysia arfakensis (Gibbs) Steenis in Acta Bot. Neerl. 1: 97 (1952). – Idenburgia arfakensis Gibbs in Fl. Arfak Mts.: 139 (1917).
- Sphenostemon papuanus (Lauterb.) Steenis & Erdtman, Svensk Bot. Tidskr. 49: 22 (1955); Sun et al., Plants 13 (2024); POWO (2026). = Sulawesi to Bismarck Archipelago. = SULAWESI, MALUKU, PAPUA. = Nouhuysia papuana Lauterb. in Nova Guinea 8: 844 (1912). – Nouhuysia pauciflora (A.C.Sm.) Steenis in Acta Bot. Neerl. 1: 97 (1952). – Idenburgia pauciflora A.C.Sm. in J. Arnold Arbor. 22: 234 (1941). – Sphenostemon pauciflorus (A.C.Sm.) Steenis & Erdtman in Svensk Bot. Tidskr. 49: 22 (1955).
