Seeds of South Australia
Calotis cuneifolia (Compositae)
Blue Burr-daisy
List of species for Calotis
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Seed collecting:
January to December
Herbarium region:
Murray
NRM region:
South Australian Murray-Darling Basin
IBRA regions
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [could be in dams; not suitable habitat]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [restricted to river]
Murray Scroll Belt (RIV06)Riverina
 Least Concern
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 Calotis]
Name derivation:
Calotis from the Greek 'kalos' meaning beautiful and 'otos' meaning ear; after the first species named in the genus Calotis cuneifolia which has an ear-shaped pappus. Cuneifolia from the Latin 'cuneus' meaning wedge and 'folium' meaning a leaf; referring to the wedge-shaped leaf or leaf tapered to the base.
Distribution:
Found along the Murray River in South Australia, from Blanchetown to the border, growing in river floodplains. Also found in Northern Territory, Queensland, New South Wales and Victoria.
Status:i
Native. Uncommon in South Australia. Rare in Northern Territory. Uncommon in Victoria. Common in the other states.
Plant description:
Perennial herb to 60 cm high with erect to prostrate stems, sparsely branched, pubescent, becoming woody at the base. Base leaves petiolate, soon withering. Stem leaves sessile, cuneate to spathulate to 4 cm long and 2 cm wide, abruptly expanded and amplexicaul at the base, 3-11-toothed at the apex. Flower-head solitary or in loose terminal cymes of 2 or 3 white to mauve daisy-flowers. Flowers most of the year.
Fruit type:
Brown round spiny fruit-head.
Seed type:
Brown triangular-shaped seed to 4 mm long and 2 mm wide, with two long spine at one end.
Embryo type:
Spathulate.
Seed collecting:
Collect mature seed heads that are dried and turning brown by picking off the heads and placing them in a paper bag. Be careful as the heads are spiny.
Seed cleaning:
Leave the heads in the paper bag to dry for at least a week. No further cleaning required if only the heads are collected. If other material were collected, use a sieve to separate the unwanted material. Whole heads can be stored with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed viability:
From two collections, the seed viability were average to high, ranging from 70% to 100%.
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
21300 (20.9 g)
21000 (20.8 g)
100+27-Apr-2006TST009
Murray
14-Sep-200670%-18°C
BGA5250 (8.46 g)2012-Dec-2006RJB70468
Murray
1-Aug-2007100%-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.