Afzelia rhomboidea (Blanco) Vidal, Cat. Pl. Prov. Manila (1880) 28; Ding Hou, Blumea 38 (1994) 318.
Eperua rhomboidea Blanco, Fl. Filip., ed. 2 (1845) 260; ed. 3, 2 (1878) 119, t. 281.
Intsia rhomboidea (Blanco) Kuntze, Rev. Gen. Pl. l (1891) 192.
Pahudia rhomboidea (Blanco) Prain, Sc. Mem. Med. Off. Army India 12 (1901) 46; Merr., Philipp. J. Sc., Bot. 5 (1910) 41; de Wit, Bull. Bot. Gard. Buitenzorg III, 17 (1941) 151, f. 2.
Type (Ding Hou 1994): Merrill Sp. Blanc. 862 (L neo; BO), Luzon.
Eperua falcata auct. non Aublet: Blanco, Fl. Filip. ed. 1 (1837) 369; Merr., Sp. Blanc. (1918) 171.
Intsia acuminata Merr., Publ. Govt. Lab. Philipp. 17 (1904) 20; Enum. Philipp. Flow. Pl. 2 (1923) 257.
Type: Merrill 1108 (K iso), Luzon.
Afzelia borneensis Harms in Fedde, Rep. 14 (April 1916) 256; 15 (1917) 19.
Pahudia acuminata Merr., Philipp. J. Sc., Bot. 11 (June 1916) 86.
Afzelia acuminata (Merr.) Harms in Fedde, Rep. 15 (1917) 19.
Pahudia borneensis (Harms) Merr., J. Str. Br. Roy. As. Soc. 76 (1917) 84.
Lectotype (Harms 1917): Hose 93 (L iso), Sarawak.
Pahudia rhomboidea (Blanco) Prain var. praetermissa de Wit, Bull. Bot. Gard. Buitenzorg III, 17 (1941) 151, f. 2: 3a.
Afzelia rhomboidea (Blanco) Vidal var. praetermissa Léonard, Reinwardtia 1 (1950) 63.
Syntypes: Clemens 21289 (L), Sarawak; bb 8981 (BO, n.v.), Sumatra; Exp. Nieuwenhuis 1424 & 1509 (BO, n.v.), Kalimantan; Teijsmann 8249 (BO, n.v.), Kalimantan.
Vernacular names
Tanduk tarum [Sumatra]
Tindalo (Tagalog) [Philippines]
Balayong [Philippines]
Ipil darat [Sabah]
Merbau tanduk [Timber trade name]