Seeds of South Australia
Amaranthus mitchellii (Amaranthaceae)
Boggabri Weed
List of species for Amaranthus
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Seed collecting:
September to April
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern   [dislikes saline ground]
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))   [could be undercollected]
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(i,ii))   [could be undercollected]
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))   [could be undercollected]
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(i,ii))   [could be undercollected]
Torrens (GAW06) 
 Rare   (IUCN: RA d(i,ii))   [limited habitat]
Kintore (GVD04)Great Victoria Desert
 Least Concern   [dislikes saline ground]
Tallaringa (GVD05) 
 Least Concern   [dislikes saline ground]
Dieri (SSD03)Simpson Strzelecki Dunefields
 Least Concern   [dislikes saline ground]
Warriner (SSD04) 
 Least Concern   [dislikes saline ground]
Strzelecki Desert (SSD05) 
 Least Concern   [dislikes saline ground]
Breakaways (STP01)Stony Plains
 Least Concern   [dislikes saline ground]
Oodnadatta (STP02) 
 Least Concern   [dislikes saline ground]
Murnpeowie (STP03) 
 Least Concern   [dislikes saline ground]
Peake-Dennison Inlier (STP04) 
 Least Concern   [dislikes saline ground]
Witjira (STP06) 
 Least Concern   [dislikes saline ground]
Baltana (STP07) 
 Least Concern   [dislikes saline ground]
Sturt Stony Desert (CHC02)Channel Country
 Least Concern   [dislikes saline ground]
Diamantina-Eyre (CHC04) 
 Least Concern   [dislikes saline ground]
Coongie (CHC06) 
 Least Concern   [dislikes saline ground]
Lake Pure (CHC07) 
 Least Concern   [dislikes saline ground]
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern   [dislikes saline ground]
Watarru (CER02) 
 Least Concern   [dislikes saline ground]
Everard Block (CER03) 
 Least Concern   [dislikes saline ground]
IBRA regions
DISPLAY ALL
Northern Flinders (FLB05)Flinders Lofty BlockLeast Concern
  [dislikes saline ground]
5 of 8 subregionsGawlerRare
2 of 4 subregionsGreat Victoria DesertLeast Concern
3 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
6 of 7 subregionsStony PlainsLeast Concern
4 of 4 subregionsChannel CountryLeast Concern
3 of 3 subregionsCentral RangesLeast 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 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. Mitchellii named in honour of Sir Thomas  Mitchell (1792-1855), a surveyor, explorer and botanical collector.
Distribution:
Found in the arid north of South Australia, growing on drainage lines, floodplains or banks of watercourses in grey clay particularly after flooding events. 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 ascending annual or ephemeral herb to 60 cm high. Leaves on petioles to 40 mm long, ovate or narrowly ovate to oblong. Flower-spike axillary, dense, globose clusters or short spikes to 10 mm long, predominantly female flowers present. Flowers throughout the year.
Fruit type:
Clusters of globular papery capsules to 1.5 mm long.
Seed type:
Semi-flat round black seed less than 1mm 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 low, at 35%.
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
BGA20000 (2.34 g)508-May-2007RJB71567B
Lake Eyre
19-Sep-200835%-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.