Seeds of South Australia
Cassinia complanata (Compositae)
Sticky Cassinia
List of species for Cassinia
Click on an image to enlarge it
Seed collecting:
March to May
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Lucindale (NCP03)Naracoorte Coastal Plain
 Data Deficient   [questionable records]
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened   [widespread]
Fleurieu (KAN02) 
 Near Threatened
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU D2)   [in Barossa area; outliers]
Broughton (FLB02) 
 Near Threatened   (Probable Decline)
Southern Flinders (FLB04) 
 Near Threatened
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   [likes wetter areas, localised Wilpena]
Southern Yorke (EYB01)Eyre Yorke Block
 Near Threatened   (Probable Decline)
St Vincent (EYB02) 
 Near Threatened   (Probable Decline)
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(ii))   [prob under-coll or herb records need re-det'ed]
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))   [prob under-coll or herb records need re-det'ed]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(ii))
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Wimmera (MDD05) 
 Data Deficient
IBRA regions
DISPLAY ALL
2 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Data Deficient
2 of 2 subregionsKanmantooNear Threatened
4 of 6 subregionsFlinders Lofty BlockNear Threatened
, Rare
, Vulnerable
4 of 5 subregionsEyre Yorke BlockNear Threatened
, Rare
4 of 6 subregionsMurray Darling DepressionRare
, Data Deficient
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 Cassinia]
Name derivation:
Cassinia named after Alexandre-Henri Gabriel de Cassini (1782-1832), a French botanist who published extensively on the Compositae family. Complanata from the Latin 'complano' , meaning levelled or flattened, referring to the flattened flower clusters.
Distribution:
Found southern South Australia from the Flinders Ranges to the upper South-east growing in mallee and woodland on sandy soils. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria.
Plant description:
Erect or semi- erect shrub to 2 m high; branchlets sticky with moderately dense, spreading hairs. Leaves semi-erect to spreading, sessile, narrowly linear to terete, to 50 mm long and 1 mm wide; glabrous or with sparse to moderately dense short hairs above; dense white cottony hairs matted with yellowish resin beneath,;apex tapering to an acute point; margins revolute to midrib. Inflorescences dense flattened clusters at end of stems, with white, greenish based flowers. Flowering between January and February.
Fruit type:
Light cream, dense round daisy-head.
Seed type:
Creamy-brown cylindrical seed to 1.1 mm long and 0.4 mm wide; smooth with long white pappus at one end.
Embryo type:
Spatulate.
Seed collecting:
Collect heads that are matured, cream and contain brown seeds.
Seed cleaning:
Place the heads in a tray for one to two week to dry. Then rub the heads gently with your hands to dislodge the seeds. Use a sieve to separate any unwanted material. Viable seeds will be small and brown. 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.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
531815 (39.9 +39.9 g)
531815
3728-Apr-2004DJD 7
Southern Lofty
23-Mar-2006+5°C, -18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Oct-1526%21 dNA
1% agar;
Incubated under winter conditions
Oct-1518%21 dNA
1% agar;
Incubated under spring/autumn conditions
Oct-1516%7 dNA 250 mg/L gibberellic acid 48 h;
1% agar;
Incubated under spring/autumn conditions
Oct-1516%14 dNA 250 mg/L gibberellic acid 48 h;
1% agar;
Incubated under winter conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)