Plantae > Tracheophyta > Magnoliopsida > Myrtales > Myrtaceae > Eucalyptus > Eucalyptus regnans

Eucalyptus regnans (mountain-ash)

Synonyms: Eucalyptus amygdalina var. regnans; Eucalyptus regnans var. fastigata

Wikipedia Abstract

Eucalyptus regnans, known variously as mountain ash, swamp gum, or stringy gum, is a species of Eucalyptus native to Tasmania and Victoria in southeastern Australia and the tallest flowering plant and one of the tallest trees in the world, second to the coast redwood (Sequoia sempervirens). A straight-trunked tree with smooth grey bark and a stocking of rough brown bark to 5–20 metres (16–66 ft) above the ground, it regularly grows to 85 metres (279 ft), with the tallest living specimen, the Centurion, standing 99.6 metres (327 feet) tall in Tasmania. The white flowers appear in autumn. Victorian botanist Ferdinand von Mueller described the species in 1871.
View Wikipedia Record: Eucalyptus regnans


Allergen Potential [1]  Medium
Flower Type [2]  Hermaphrodite
Hazards [2]  Citronellal, an essential oil found in most Eucalyptus species is reported to be mutagenic when used in isolation; In large doses, oil of eucalyptus, like so many essential oils has caused fatalities from intestinal irritation; Death is reported from ingestion of 4 - 24 ml of essential oils, but recoveries are also reported for the same amount; Symptoms include gastroenteric burning and irritation, nausea, vomiting, diarrhoea, oxygen deficiency, ,weakness, dizziness, stupor, difficult respiration, delirium, paralysis, convulsions, and death, usually due to respiratory failure;
Janka Hardness [3]  1100 lbf (499 kgf) Soft
Leaf Type [2]  Evergreen
Pollinators [2]  Bees
Specific Gravity [4]  0.523
Structure [2]  Tree
Usage [2]  Wood - hard, durable, straight grained, easily worked. A highly valued timber, it is used for joinery, furniture, construction, pulp etc;
Height [2]  246 feet (75 m)
View Plants For A Future Record : Eucalyptus regnans

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Mt. Field National Park II 39289 Tasmania, Australia


External References

USDA Plant Profile


Attributes / relations provided by
1Derived from Allergy-Free Gardening OPALS™, Thomas Leo Ogren (2000)
2Plants For A Future licensed under a Creative Commons Attribution 4.0 License
3Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts
4Chave J, Coomes D, Jansen S, Lewis SL, Swenson NG, Zanne AE (2009) Towards a worldwide wood economics spectrum. Ecology Letters 12: 351-366. Zanne AE, Lopez-Gonzalez G, Coomes DA, Ilic J, Jansen S, Lewis SL, Miller RB, Swenson NG, Wiemann MC, Chave J (2009) Data from: Towards a worldwide wood economics spectrum. Dryad Digital Repository.
5HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
6New Zealand Institute for Plant & Food Research Plant-SyNZ™ database
7Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009
8Petauroides volans (Diprotodontia: Pseudocheiridae), JAMIE M. HARRIS AND K. SHANE MALONEY, MAMMALIAN SPECIES 42(866):207–219 (2010)
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2020-03-21; License: CC BY 4.0