Seeds of South Australia
Amaranthus centralis (Amaranthaceae)
Central Amaranth
List of species for Amaranthus
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Flinders Ranges
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Data Deficient   [records on loan & not databased; undercollected also]
Breakaways (STP01)Stony Plains
 Data Deficient   [records on loan & not databased; undercollected also]
Sturt Stony Desert (CHC02)Channel Country
 Data Deficient   [records on loan & not databased; undercollected also]
Mann-Musgrave Block (CER01)Central Ranges
 Data Deficient   [records on loan & not databased; undercollected also]
Watarru (CER02) 
 Data Deficient   [records on loan & not databased; undercollected also]
Tieyon (FIN03)Finke
 Data Deficient   [records on loan & not databased; undercollected also]
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 Amaranthus]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
Amaranthus from the Greek 'a' meaning not and 'marantos' meaning withering, a name used for an everlasting flower. Centralis from Latin meaning central or in the middle, may refer to where the species is found, mainly in the centre of Australia.
Distribution:
Found in the far north of South Australia, growing on red sand in sandy or rocky ephemeral watercourses, sandy to clayey loam on creek banks and edges of permanent pools in eucalypt lined channels, Acacia shrubland, or open tussock grassland. Also found in Western Australia, Northern Territory and Queensland.
Status:
Native. Uncommon in South Australia (or under collected). Rare in Western Australia. Common in the other states.
Plant description:
Erect annual herb to 60 cm high, with angular and hairy stems. Leaves on petioles to 20 mm long, elliptic or ovate to 35 mm long and 17 mm wide. Flower-spikes axillary, globular clusters and sometimes erect terminal spikes to 60 mm long, with greenish male and female flowers present.
Fruit type:
Pale brown papery capsules to 3 mm long, with slightly raised ribs, each with one black seed.
Seed type:
Semi-flat, round black seeds to 1.2 mm across.
Embryo type:
Peripheral.
Seed collecting:
Collect mature capsules, those that are turning a pale straw colour and contain black seeds. Whole stem containing many clusters of fruit can be collected.
Seed cleaning:
Place the capsules/stems in a tray and leave to dry for two weeks. Then rub the capsules/stems gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Be very careful as the seeds are very small. 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.
Seed viability:
From one collection, the seed viability was high, at 95%.
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
4000 (1.9 g)
4000 (1.9 g)
17-May-2007RJB71623
North Western
1-Aug-200795%-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.