2.5. 5. Tristellateia Thouars, Madagasc.: 14. 1806.

= Zymum Noronha ex Thouars, Hist. Vég. Îsles Austral. Afriq.: 69. 1808. Type species: Zymum madagascariense Spreng. (= Tristellateia madagascariensis Poir.).

= Platynema Wight & Arn., Edinburgh New Philos. J. 15: 179. 1833. Type species: Platynema laurifolium Wight & Arn. (= Tristellateia australasiae A. Rich.).

Type species.

Tristellateia madagascariensis Poir.

Notes.

Tristellateia comprises 21 species of lianas endemic to rainforests and seasonally dry tropical forests of Madagascar (19 threatened species; Suppl. material 1), with a single species occurring in continental Africa (Comoros, Kenya, Mozambique, Somalia, Tanzania) and another species endemic to Southeast Asia (Cambodia, Myanmar, Thailand, Malaysia, Philippines, Taiwan, and Vietnam), and Oceania (Australia, Bismarck Archipelago, Caroline Islands, Jawa, Lesser Sunda Islands, Maluku, Marianas, Nansei-shoto, New Caledonia, New Guinea, and Vanuatu; POWO 2024). For an identification key for all species of Tristellateia, see Arènes (1947).