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.
Distribution:
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.
Status:
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, 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.