Eucalyptus robusta (Swamp Mahogany)

Eucalyptus robusta flowers

Photograph by John Robert McPherson. Some rights reserved. (view image details)

Eucalyptus robusta leaves and buds

Photograph by John Robert McPherson. Some rights reserved. (view image details)

Eucalyptus robusta tree, Chermside, Brisbane

Photograph by John Robert McPherson. Some rights reserved. (view image details)

Credits:
Description, Habitat and Distribution information is sourced from: G.M.Chippendale (2017) Eucalyptus robusta. In: Flora of Australia. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. https://profiles.ala.org.au/opus/foa/profile/Eucalyptus%20robusta Licensed under Creative Commons CC BY 4.0 license.

Growth Characteristics information is sourced from: State Flora Catalog, Government of South Australia Licensed under Creative Commons CC BY 4.0 license.

SWAMP MAHOGANY FACTS

distribution map showing range of Eucalyptus robusta in Australia

Map is from The Atlas of Living Australia web site, licensed under Creative Commons Attribution 3.0 Australia License

Common Name
Swamp Mahogany

Description
Tree to 30 m. Bark rough throughout, soft, spongy, subfibrous, red-brown. Juvenile leaves ovate. Adult leaves broadly lanceolate; lamina 10-16 cm long, 2.7-4.5 cm wide; lateral veins fine, at 50° -60° ; intramarginal vein up to 2 mm from margin; petiole 20-35 mm long. Umbels 9-15-flowered; peduncle broadly flattened, 13-30 mm long; pedicels angular, 1-9 mm long, sometimes absent. Buds rostrate or ±fusiform; operculum conical, rostrate, 10-12 mm long, 6-8 mm wide; hypanthium obconical, 6-7 mm long, 6-8 mm wide. Fruits cylindrical, sometimes slightly constricted in the middle, 10-18 mm long, 6-11 mm wide; disc broad, descending; valves 3 or 4, usually included and joined across the orifice, sometimes level or slightly exserted.

Habitat
Grows in swampy areas, near lagoons and estuaries, and sometimes on slopes, often in pure stands in open forest.

Distribution
Occurs from the Bowenia State Forest, N of Rockhampton, Qld, and some off-shore islands, southwards to Moruya, N.S.W.

Growth Characteristics
Height (m): 10 - 20
Spread (m): 8 - 15
Soil Texture: sand, loam, clay
Soil pH: acid soils, neutral soils, alkaliine soils
Frost Sensitivity: moderately sensitive
Minimum Rainfall (mm): 700
Flower Colour: white
Flower Season: winter, spring

(source: SA State Flora Catalog)

Classification

Class:	Magnoliopsida
Order:	Myrtales
Family:	Myrtaceae
Genus:	Eucalyptus
Species:	robusta
Common Name:	Swamp Mahogany

Relatives in same Genus
  Eucalyptus acaciiformis
  Eucalyptus accedens
  Eucalyptus acies
  Eucalyptus albens
  Eucalyptus bancroftii
  Eucalyptus baxteri
  Eucalyptus caleyi
  Eucalyptus camaldulensis
  Eucalyptus camphora
  Eucalyptus cloeziana
  Eucalyptus crebra
  Eucalyptus crenulata
  Eucalyptus curtisii
  Eucalyptus dealbata
  Eucalyptus dumosa
  Eucalyptus eugenioides
  Eucalyptus forrestiana
  Eucalyptus goniocalyx
  Eucalyptus grandis
  Eucalyptus intertexta
  Eucalyptus largiflorens
  see A-Z list for more ...