Description from Flora of China
Eucalyptus maculata Hooker var. citriodora (Hooker) Bailey.
Trees, to 28 m tall. Bark grayish white, smooth, exfoliating. Young leaves peltate, petiolate; leaf blade lanceolate, with glandular trichomes, base rounded. Leaf blade of intermediate leaves broadly lanceolate, 15-18 × 3-4 cm. Mature leaves strongly smelling of lemon; petiole 1.5-2 cm; leaf blade narrowly lanceolate, 10-15 × ca. 1 cm, slightly twisted, both surfaces with black glands. Inflorescences terminal or axillary, paniculate, umbels 3-flowered; peduncle 3-4 mm, 2-ridged. Flower buds long obovate, 6-7 mm. Hypanthium ca. 5 × 4 mm; stipe 1-6 mm; calyptra ca. 1.5 mm, slightly wider than hypanthium, apex rounded, apiculate. Stamens 6-7 mm, in 2 whorls; anthers elliptic, dorsifixed, cells parallel. Capsule pot-shaped to ovoid, 1-1.2 × 0.8-1 cm; disk broad; valves 3 or 4, included in hypanthium. Fl. Apr-Dec.
Cultivated in Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Sichuan, Yunnan, and Zhejiang [native to NE Australia].