Ozothamnus ledifolius
Ozothamnus ledifolius is a shrub, from the family Asteraceae and one of 54 species from the genus Ozothamnus. Harold Frederick Comber, an English horticulturist and plant collector, introduced Ozothamnus ledifolius in 1929 on mountains of Tasmania above 2500 ft. high from the seeds collected from 4000 ft. height.
Etymology
The famous Scottish botanist Robert Brown erected the genus Ozothamnus in taxonomical classification. Ozothamnus ledifolius species was first described by Augustin Pyramus de Candolle . Joseph Dalton Hooker reclassified Ozothamnus ledifolius in modern botanical classification system. The other synonym of Ozothamnus ledifolius is Cassinia ledifolia, which was coined by Allan Cunningham and Helichrysum ledifolium, which was coined by George Bentham .Ozothamnus ledifolius is commonly known as Kerosene Bush, because of its aromatic scent drifted during warm weather and highly flammable nature. It is also known as mountain everlasting bush and mountain spice in different mountains of Tasmania.
Taxonomy
All the species of genus Ozothamnus are shrubs and among 54 species 44 species are restricted to Australia. Ozothamnus is from daisy family, which ranks under eudicots. Thus Ozothamnus ledifolius shows special types of flower inflorescence and have true dicotyledons. Gnaphalieae is the hypernym of Ozothamnus, which is commonly known as pussy's-toes tribe.Description
Growth
Ozothamnus ledifolius species are slow growing woody shrubs, between 1-2m height. It is found as dense rounded shrubs and erect stems are observed, which are yellowish-green in colour. The juvenile stems are downy. These shrubs have draught and heavy frost resistance. The species propagates from seeds to semi-ripe and ripe-wood cuttings.Leaves
The lanceolate leaves of Ozothamnus ledifolius are evergreen, neat and glossy above and downy underneath, with a revolute margin, and produce a peppery fragrance in summer due to the leaf exudates that include a series of flavonoid aglycones and mostly consist of mixture of terpenoids. In resinous material of leaf exudate four sesquiterpenes, a diterpenediol and two pentacyclic triterpene acids are present. The phenolic portion of exudate encompasses three phenylethyl esters.Flowers
The flowers of Ozothamnus ledifolius are white and small. Orange buds open to white flower heads in late spring. The flowers are clustered with longer stalks and formed a convex flower head. They are arranged in a radiating pattern. The fragrance of the flowers attracts bees, birds and butterflies.Fruits
Ozothamnus ledifolius produce one seeded fruit that does not open to release seed. The maximum observed seed dormancy is two months. Seeds take two to four weeks to germinate.Distribution
Ozothamnus ledifolius is an endemic species of Tasmania and forms alpine cushion in alpine heath vegetation. It is also found in rock gardens. Ozothamnus ledifolius occurs near the summit-viewing region of Mt. Wellington in Hobart. It is known as mountain everlasting bush in Derwent Valley, at Mt. Field National Park.Occurrence and distribution of Ozothamnus ''ledifolius''
| Place | Latitude | Longitude | Data Provider |
| Huon Valley, South Port | −43.417 | 146.967 | Australia's Virtual Herbarium |
| Tasman | −43.179 | 147.831 | Tasmanian Natural Values Atlas |
| Hobart, Mt. Wellington | −42.882 | 147.233 | New Zealand Virtual Herbarium |
| Derwent Valley, Mt. Field National Park | −42.667 | 146.55 | Tasmanian Natural Values Atlas |
| Central Highlands, Millers Bluff, Great Western Tiers | −41.95 | 147.17 | Australia's Virtual Herbarium |
| Northern Midlands | −41.839 | 146.975 | Tasmanian Natural Values Atlas |
| Meander Valley | −41.729 | 146.671 | Tasmanian Natural Values Atlas |
| Kentish, Crater Lake, on E side along track rising to Marions Lookout. | −41.667 | 145.93 | Australia's Virtual Herbarium |
| Break O'Day | −41.349 | 147.870 | Tasmanian Natural Values Atlas |