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'''Synomyms''' == Synonyms == *''Ixora amboinica'' (Blume) DC. (1830), *''Ixora fulgens'' auct. non Roxb.

*A shrub 1.5-3 m tall; leaves .*Leaves lanceolate or oblong-lanceolate, 15-30 cm × 9-11 cm, herbaceous or subcoriaceous, base rounded or subacute, apex acuminate, with about 13 secondary veins, petiole 1-1.5 cm long, stipules broadly triangular, shortly awned; inflorescence .*Inflorescence loose, shortly pubescent, peduncle 3 mm long, with up to 100 flowers; flowers .*Flowers with calyx tube 0.5 mm long, lobes broadly ovate and 0.5 mm long, corolla tube 4 cm long, lobes about 1 cm long, acute, red; fruit .*Fruit red turning black at maturity.  ''I. longifolia'' is found in abandoned fields and dense scrub up to the beach, but it is less common at higher elevations.

*[97] Backer, C.A. & Bakhuizen van den Brink Jr, R.C., 1963-1968. Flora of Java. 3 volumes. Noordhoff, Groningen, the Netherlands. Vol. 1 (1963) 647 pp., Vol. 2 (1965) 641 pp., Vol. 3 (1968) 761 pp.*[182] Bremekamp, C.E.B., 1937. The Malaysian species of the genus Ixora (Rub.). Contributions à l'étude de la flore des Indes Néerlandaises XXXIV. Bulletin du Jardin Botanique de Buitenzorg, Série III, 14: 197-367.*[580] Heyne, K., 1950. De nuttige planten van Indonesië [The useful plants of Indonesia]. 3rd Edition. 2 volumes. W. van Hoeve, 's-Gravenhage, the Netherlands/Bandung, Indonesia. 1660 + CCXLI pp.*[1126] Perry, L.M., 1980. Medicinal plants of East and Southeast Asia. Attributed properties and uses. MIT Press, Cambridge, Massachusetts, United States & London, United Kingdom. 620 pp.*[1227] Ridley, H.N., 1922-1925. The flora of the Malay Peninsula. 5 volumes. Government of the Straits Settlements and Federated Malay States. L. Reeve & Co, London, United Kingdom.*[1265] Rumphius, G.E., 1741-1747. Herbarium Amboinense; Het Amboinsch Kruidboek. 7 volumes (Latin, Dutch). Joannus Burmannus, Amsterdam, The Netherlands. Vol. 1: XXXIII+200 pp., Vol. 2: 270 pp., Vol. 3: 218 pp., Vol. 4: 154 pp., vol. 5: IV+492 pp., vol. 6: IIII+256 pp., vol. 7: 74 pp.+ XXI (Index Universalis). == Main genus page ==*[[Ixora (PROSEA Medicinal plants)|''Ixora'']] (Medicinal plants)

*M.C. Ysrael & J.L.C.H. van Valkenburg