Seeds of South Australia
Amaranthus cuspidifolius (Amaranthaceae)
Pointy-leaf Amaranth
List of species for Amaranthus
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Eastern, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
SUMMARY
Gawler Lakes (GAW03)Gawler
 Rare   (IUCN: RA d(i,ii))
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))
Roxby (GAW07) 
 Data Deficient   [records on loan]
Barrier Range (BHC01)Broken Hill Complex
 Rare   (IUCN: RA d(i))   [no survey records, possibly not in database, southern edge all regions]
Bimbowrie (BHC05) 
 Rare   (IUCN: RA d(i))   [no survey records, possibly not in database, southern edge all regions]
Dieri (SSD03)Simpson Strzelecki Dunefields
 Data Deficient   [records on loan]
Macumba (STP05)Stony Plains
 Data Deficient   [records on loan]
Witjira (STP06) 
 Data Deficient   [records on loan]
Coongie (CHC06)Channel Country
 Data Deficient   [records on loan]
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern   [records on loan ]
Watarru (CER02) 
 Near Threatened   [records on loan ]
Everard Block (CER03) 
 Near Threatened   [records on loan ]
Pedirka (FIN04)Finke
 Data Deficient   [records on loan]
IBRA regions
DISPLAY ALL
3 of 8 subregionsGawlerRare
, Data Deficient
2 of 4 subregionsBroken Hill ComplexRare
Dieri (SSD03)Simpson Strzelecki DunefieldsData Deficient
  [records on loan]
2 of 7 subregionsStony PlainsData Deficient
Coongie (CHC06)Channel CountryData Deficient
  [records on loan]
3 of 3 subregionsCentral RangesLeast Concern
, Near Threatened
Pedirka (FIN04)FinkeData Deficient
  [records on loan]
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. Cuspidifolius from the Latin 'cuspis' meaning point or pointed end and 'folium' meaning leaf.
Distribution:
Found north of Port Augusta across the arid region of South Australia, growing on rocky (often granite) outcrops, hillsides and crevices and in creek lines in sandy to gravelly soil or in areas of gypseous soils along drainage lines with other ephemerals. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Erect or decumbent annual or ephemeral herb to 50 cm high. Leaves on petioles to 35 mm long, oblong to elliptic or ovate to 40 mm long and 12 mm wide. Inflorescence of axillary clusters of predominantly female flowers.
Fruit type:
Clusters of globular, papery capsules to 2 mm long.
Seed type:
Semi-flat round, black seed less than 1 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
12900 (8.65 g)
12900 (8.65 g)
8-May-2007RJB71580
Lake Eyre
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.