Common name: Lemon-scented Gum
Corymbia citriodora (Hook.) K.D.Hill & L.A.S.Johnson APNI*
Synonyms: Eucalyptus citriodora Hook. APNI*
Description: Tree to 50 m tall. Bark smooth throughout, white to pink or coppery, often powdery, shedding in thin curling flakes, mottling of trunk often not pronounced.
Juvenile leaves always petiolate, opposite for 2 or 3 pairs then alternate, ovate to lanceolate, 14–21 cm long, 4.5–8 cm wide, the base usually peltate for many nodes, green; petiole and lamina scabrid for many nodes. Adult leaves alternate, petiole 1–2.5 cm long; blade narrowly lanceolate to falcate, (7)10–23 cm long, 0.6–2.8(3.5) cm wide, base tapering to petiole, concolorous, glossy, green, strongly penniveined, very densely reticulate, intramarginal vein parallel to and just within margin, oil glands island. Leaves lemon-scented when crushed or not so.
Inflorescences axillary compound; buds 3 per umbel, pedicels 0.1–0.6 cm long. Mature buds obovoid to pyriform, 0.6–1 cm long, 0.5–0.7 cm wide, green to creamy, usually smooth, scar usually absent, operculum rounded to conical or slightly beaked, Flowers white.
Fruit pedicellate, urceolate or barrel-shaped, 0.8–1.5 cm long, 0.7–1.2 cm wide, disc descending, valves 3, enclosed. Seed reddish black, glossy, 2.3–5 mm long, boat-shaped, dorsal surface smooth, not winged, hilum ventral.
Distribution and occurrence: A tall tree from temperate and tropical eastern Australia, found north from Coffs Harbour, New South Wales, throughout coastal and montane eastern and central Queensland inland to Chinchilla, the Carnarvon Range, Great Dividing Range east of Tambo, east from Townsville to Hughenden, and further north to Cooktown and Lakeland Downs on southern Cape York Peninsula.
It prefers lighter loamy soils or skeletal soils and occurs as a component of dry sclerophyll forest and woodlands in hilly country.
NSW subdivisions: *CC
Corymbia citriodora is very similar to C. maculata, differing only in having slightly narrower crown leaves, less mottled bark and juvenile leaves that are still setose to scabrid (feel rough) on comparatively taller coppice growth.
Text by Louisa Murray
Taxon concept: EUCLID
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.