Plants of
South Australia
Ozothamnus decurrens
Compositae
Ridged Bush-everlasting
Display all 4 images
Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
Enlarge Map
Copy Map
Copy Map
Display IBRA region text

Botanical art

Kath Alcock paintings: 2.

Etymology

Ozothamnus, from the Greek 'ozo', meaning to smell and 'thamnos, meaning shrub, alluding to the fragrant foliage when crushed. Decurrens, meaning having the base of the stalk extending down the stem as two raised lines or wings.

Distribution and status

Found on Eyre Peninsula and the mid Murray region in South Australia growing in mallee communities on loamier soils of flats and dune swales, also on rocky outcrops. Also found in Victoria. Native. Common in South Australia. Uncommon in Victoria.
Herbarium regions: Eyre Peninsula, Murray, South Eastern
NRM regions: Eyre Peninsula, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Spreading shrub to 0.5 m high, with branchlets covered in dense cottony hairs. Leaves spreading, sessile, linear, to 8 mm long and 1 mm wide; glabrous and scabrous above, densely cottony and glandular beneath; apex rounded; base decurrent into 2 prominent green, glabrous ridges; margins revolute. Inflorescences, hemispherical to 2.5 cm diameter, with creamish-yellow flowers. Flowering between December and January. Fruits are small cream-brown heads. Seed embryo type is spatulate, fully-developed.

Seed collection and propagation

Collect seeds between February and March. Collect mature seed heads turning a cream-brown. Place the heads in a tray and leave to dry for 1-2 weeks, then rub the heads gently with your hands to dislodge the seeds. Use a sieve to separate the unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.