Jarrah
Scientific Classification
Kingdom: plantae
Division: spermatophytes (seed plants)
Subdivision: angiosperm {(covered seed),hardwoods}
Order: myrtales
Family: myrtaceae
Genus: eucalyptus
Species: marginata syn. Swan River Mahogany

A large Western Australian hardwood, grows to 30-40 metres tall by up to 2 metres diameter, dark red, fairly dense, very durable, highly resistant to decay. One of the more common eucalyptus species of south west Western Australia. Was used for general construction, sleepers, piles, poles, flooring, panelling and joinery. Now better used as a fine furniture timber.
| species | dry density kg/m3 | Janka hardness (side grain), dry kN |
| jarrah | 820 | 8.5 |
See also density comparative chart here.