Seeds of South Australia
Calotis ancyrocarpa (Compositae)
Anchor Burr-daisy
List of species for Calotis
Click on an image to enlarge it
Seed collecting:
September to December
Herbarium region:
Lake Eyre
NRM region:
South Australian Arid Lands
IBRA regions
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened   [restricted]
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened
Diamantina-Eyre (CHC04) 
 Near Threatened
Coongie (CHC06) 
 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. Ancyrocarpa meaning archor fruit.
Found in the far north-east corner in South Australia growing on silty sands and loams, mainly on floodplains and stream beds. Also found in Queensland and New South Wales.
Native. Uncommon in South Australia. Common in the other States.
Plant description:
Annual herb to 20 cm high with erect or ascending stems. Leaves sessile, broadly linear to oblanceolate to 6 cm long and 4 mm wide; entire or with a few acute linear lobes, narrowed at the base and very sparsely pubescent. Flower-heads solitary or in loose terminal cymes of 2-4 yellow daisy-heads. Flowering between June and September.
Fruit type:
Dense spiny rounded fruit-head.
Seed type:
Red-brown anchor-shaped seed to 3 mm long, with hairs on the spine at one end and along the margin at the other end.
Embryo type:
Spatulate 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.