Seeds of South Australia
Calotis breviradiata (Compositae)
Short-ray Burr-daisy
List of species for Calotis
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Seed collecting:
September to November
Herbarium region:
NRM region:
Alinytjara Wilurara
IBRA region
Nullarbor Plain (NUL02)Nullarbor
 Least Concern   [WA species]
Yalata (NUL03) 
 Data Deficient   [possibly RE, old record]
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. Breviradiata from 'brevi' meaning short and 'radiatus' meaning spreading rays.
Found in the south-west part of South Australia, above the Nullarbor, growing in dried out water courses and claypans. Also found in Western Australia.
Native. Uncommon in South Australia. Common in Western Australia.
Plant description:
Perennial herb to 40 cm high with erect or ascending stems and  branches sparsely pubescent, often becoming woody at the base. Leaves sessile, cuneate to oblanceolate, to 3 cm long and 4 mm wide, 1-5-toothed near the apex, narrowed at the base, sparsely pubescent. Flower-head solitary or in loose terminal cymes of 2-4 yellow daisy-flowers. Flowering between July and September.
Fruit type:
Round spiny fruit-head.
Seed type:
Orange-brown archor-shaped seed to 3 mm long, with hairy winged margin at one end and spiny hairs at the other.
Embryo type:
Spathulate fully developed.
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 germination:
Seeds are non-dormant, viable seed should germinate readily.