- Botanical Name: Eucalyptus citriodora
- Synonyms: Eucalyptus maculata var. citriodora, Eucalyptus melissiodora
- Common Name: lemon-scented gum, blue spotted gum, lemon eucalyptus and eucalyptus citriodora
- Seeds collection period: Oct- Dec.
- Seeds longevity: 1-2 year
Eucalyptus citriodora is a large, handsome evergreen tree, 24-40m in height; tall, straight trunk, 60-130 cm in diameter; open, graceful crown of drooping foliage; bark smooth, white, powdery, sometimes pink, red or blue-grey, on large trunks dark or grey and shaggy. Juvenile leaves alternate, ovate to broadly lanceolate, sometimes setose, petiolate, sometimes peltate; adult leaves alternate, lanceolate to narrowly lanceolate, 8-16 x 0.5-2 cm, acuminate, strongly lemon scented when crushed; petiole 13-20 mm long. Inflorescence terminal and compound or axillary and simple; umbels 3 flowers; flower buds white, clavate; operculum hemispherical, 3-4 x 4-5 mm, apiculate.
- Apiculture: E. citriodora is a favourite of beekeepers because of the high quality and quantity of honey produced. Honey produced is light amber.
- Fibre: The tree is planted as one of the better eucalypts for producing pulp in low-altitude areas of tropical and subtropical regions.
- Timber: The timber is used for general construction, bridges, railway sleepers and ties, flooring, poles, sporting goods, agricultural implements and tool handles.
- Essential oil: The commercially important eucalyptus oil distilled from the leaves of this and other Eucalyptus species has medicinal and industrial uses.
- Medicine: The oils are used with steam and other preparations as an inhalant to relieve colds and influenza symptoms. Because of the refreshing odour of the oil and its efficiency in killing bacteria, it also finds application as antiseptic.