Common name: swamp mahogany
Eucalyptus robusta Sm. APNI*
Synonyms: Eucalyptus multiflora var. bivalvis Blakely APNI*
Description: Tree to 25 m high; bark persistent, red-brown, stringy (shortly fibrous), thick and spongy.
Juvenile leaves disjunct, ovate, glossy green.
Adult leaves disjunct, broad-lanceolate, 10–17 cm long, 2–4.5 cm wide, dark green, glossy, discolorous, penniveined. Umbellasters 7- to > 11-flowered; peduncle broadly flattened, 13–30 mm long; pedicels terete, 1–9 mm long. Buds fusiform, 16–24 mm long, 6–8 mm diam., scar present; calyptra elongate acute or rostrate, as long and as wide as hypanthium.
Fruit cylindrical, 10–18 mm long, 6–11 mm diam.; disc depressed; valves rim-level or slightly exserted, usually apically joined.
Distribution and occurrence: Locally abundant in heath on low swampy sites on sandy soils; north from Moruya.
NSW subdivisions: NC, CC, SC
Other Australian states: Qld
Hybrids with E. tereticornis are not uncommon where they occur in close proximity. They have been known as E. patentinervis R. T. Baker and have been recorded as a koala food tree (e.g. near Port Macquarie).
Text by K. Hill
Taxon concept: Flora of NSW 2 (1991)
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.