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. Complanata from the Latin 'complano' meaning levelled or flattened; referring to the flattened flower clusters.
Distribution:
Found in the southern part of 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 semierect shrub to 2 m high, branchlets with moderately dense spreading, hairs, sticky. Leaves semierect 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 with greenish base 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
October 201526%21dNA None
1% water agar
Incubated under winter conditions
October 201518%21dNA None
1% water agar
Incubated under spring/autumn conditions
October 201516%7dNA Soak in 250 mg/L gibberellic acid for 48 hrs
1% water agar
Incubated under spring/autumn conditions
October 201516%14dNA Soak in 250 mg/L gibberellic acid for 48 hrs
1% water 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)