Plants of
South Australia
Dichromochlamys dentatifolia
Compositae
Tooth-leaved Daisy.
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Arkaroola
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Botanical art

Kath Alcock painting: 1.

Etymology

Dichromochlamys from the Greek 'dis' meaning double, 'chroma' meaning colour and 'chlamys' meaning cloak; referring to the involucre in which the dark coloured backs of the bracts contrast with the white scarious margins. Dentatifolia from the Latin 'dentata' meaning toothed and 'folium' meaning a leaf, referring to the species' toothed leaves.

Distribution and status

Found in the north and north-east parts of South Australia, growing in grassland and saltbush communities on stony soils. Also found in Western Australia, Northern Territory, Queensland and New South Wales. Native. Common in South Australia. Rare in New South Wales. Uncommon in Western Australia. Common in the other States.
Herbarium regions: North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern
NRM regions: Alinytjara Wilurara, South Australian Arid Lands
AVH map: SA distribution map (external link)

Plant description

Annual herb to 25 cm high; stems decumbent to ascending, villous to woolly, rarely glabrous. Leaves narrow-spathulate to oblong-cuneate, to 3.5 cm long and 10 mm wide with margins toothed apically or rarely entire; surfaces villous to woolly, rarely glabrous glandular; base petiole-like. Flower-heads to 12 mm diameter with small white to pink petals. Flowers in spring. Fruits are round creamy, fluffy daisy-head. Seeds are orange, flat ovoid seed to 2 mm Long and 1 mm wide, covered in creamy hairs and long pappus. Seed embryo type is spatulate fully developed.

Seed collection and propagation

Collect seeds between October and December. Collect heads that are fluffy (seeds still attached). Seeds should come off easily with your fingers. Place the pods in a tray and leave to dry for a week. No further cleaning is required if only seed was collected. 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. From one collection, the seed viability was high, at 95%. Seeds are non-dormant; viable seed should germinate readily.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA7,600 (3.02 g)10+5-Oct-2010DJD1940
Lake Eyre
1-Jan-201295%-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.