Seeds of South Australia
Callistemon sieberi (Myrtaceae)
River Bottlebrush
List of species for Callistemon
Display more images
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium regions:
Murray, Southern Lofty
NRM region:
Adelaide and Mount Lofty Ranges
IBRA regions
Fleurieu (KAN02)Kanmantoo
 Vulnerable   (IUCN: VU D2)   (Probable Decline)   [restricted to stream margins]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [declining in Sturt & Onkaparinga rivers; resricted to stream margins; patchy; doing ok in Sth Para river]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Callistemon]
Name derivation:
Callistemon from the Greek 'kallos' meaning beauty and 'stemon' meaning a stamen; alluding to the beautiful flowers of the genus. Sieberi named after Franz Wilhelm Sieber (1785-1844), a Bohemian botanist and plant collector who travelled to Europe, the Middle-east, Southern Africa and Australia.
Distribution:
Found only in the southern Mount Lofty Ranges in South Australia, growing along watercourses and rocky riverbeds. Also found in Queensland, New South Wales and Victoria.
Status:
Native. Rare in South Australia. Uncommon in Queensland. Common in the other states.
Plant description:
Shrub or small tree to 3 m high with hard, fissured bark and slightly weeping branches. Leaves narrowly oblanceolate, to 50 mm long and 5 mm wide, often slightly falcate, pungent tip. Inflorescence a cylindrical spike to 50 mm long and 25 mm wide with cream to pale yellow, occasionally pink flowers. Flowering between November and January.
Fruit type:
Grey-brown woody capsules to 5 mm long and 5 mm wide, cup-shaped. Capsules remain on the branches.
Embryo type:
Folded.
Seed collecting:
Collect capsules that are large and hard with closed valves, preferably collect from older, woody capsules.
Seed cleaning:
Place the capsules in a tray and leave to dry for at least two weeks or until all the valves are open. Then place all the capsules into a bucket with a lid if possible and shake hard to dislodge the seeds from the capsules. Use a sieve to separate the seeds from the capsules. The fine material will contain the seeds and other flowering material. It is very difficult to separate the seeds from this other material as the size, shape and weight are very similar. However the seeds will be a darker brown and more fleshy looking. 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.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.