Eucalyptus porosa F.Muell. ex Miq.

Black Mallee-box

Ned. Kruidk. Arch. 4: 132 (1856) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Small tree branching low, to 12 m tall, or mallee; bark rough over trunk and large branches or over most of stems, box-type. Juvenile leaves petiolate, opposite for few pairs then alternate, elliptic to ovate, to 6 cm long, 2 cm wide, green; adult leaves petiolate, alternate, lanceolate, often slightly crenulate, 6–13 cm long, 1–2 cm wide, concolorous, glossy, green; intramarginal vein remote from edge; reticulation moderate to dense, sometimes obscured by numerous oil glands. Inflorescences axillary, unbranched; peduncles to 1 cm long, 7-flowered; buds pedicellate, clavate to ovoid, to 0.7 cm long, 0.4 cm diam., no scar; operculum conical or hemispherical; stamens inflexed or irregularly flexed; anthers adnate, globoid. Fruit pedicellate, barrel-shaped, to 0.7 cm long, 0.6 cm diam.; staminal ring falling intact; disc descending; valves 4 or 5, below rim; seed brown, irregularly ovoid and slightly flattened, surface shallowly reticulate, hilum ventral. Flowers May–Nov.

CVU, DunT, Gold, GGr, LoM, MuM, RobP, VRiv, Wim. Also SA, NSW. In Victoria restricted to the north-west, north from Wyperfeld National Park, where it occurs on heavier loam soils of mallee areas.

Eucalyptus porosa expresses some link with E. leucoxylon and E. melliodora in the fruiting characters. Populations in the area to the west of Wycheproof are doubtfully of this taxon.

Source: Brooker, M.I.H.; Slee, A.V. (1996). Eucalyptus. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
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Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Myrtales
family Myrtaceae
genus Eucalyptus
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Eucalyptus porosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Eucalyptus porosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Victorian Riverina present native
Robinvale Plains present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native

State distribution

Distribution map
Western Australia
South Australia
New South Wales
Australian Capital Territory