Seeds of South Australia
Tetragonia implexicoma (Aizoaceae)
Bower Spinach
List of species for Tetragonia
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Seed collecting:
January to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Mount Gambier (SVP02)Southern Volcanic Plain
 Least Concern   [around sink holes]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern   (Probable Increase)   [invasive species, chokes out other sp.]
Glenelg Plain (NCP02) 
 Least Concern   [invasive species]
Lucindale (NCP03) 
 Least Concern   [edge of range; invasive species]
Tintinara (NCP04) 
 Least Concern   [edge of range; invasive species]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [coastal sp]
Fleurieu (KAN02) 
 Least Concern   [coastal sp]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern   [coastal sp]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern   [Coastal species]
St Vincent (EYB02) 
 Least Concern   [Coastal species]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))
Murray Lakes and Coorong (MDD03) 
 Least Concern   (Probable Increase)   [invasive species, chokes out other sp.]
Myall Plains (GAW01)Gawler
 Near Threatened   [limited habitat]
Gawler Lakes (GAW03) 
 Near Threatened
Arcoona Plateau (GAW04) 
 Near Threatened
Nullarbor Plain (NUL02)Nullarbor
 Least Concern
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Least Concern
IBRA regions
DISPLAY ALL
Mount Gambier (SVP02)Southern Volcanic PlainLeast Concern
  [around sink holes]
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
2 of 2 subregionsKanmantooLeast Concern
Mount Lofty Ranges (FLB01)Flinders Lofty BlockLeast Concern
  [coastal sp]
5 of 5 subregionsEyre Yorke BlockLeast Concern
2 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
3 of 8 subregionsGawlerNear Threatened
2 of 3 subregionsNullarborLeast Concern
Hampton (HAM01)HamptonLeast 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 Tetragonia]
Name derivation:
Tetragonia from the Greek 'tetra' meaning four and 'gonia' meaning angle; alluding to the 4-angled fruit of some species. Implexicoma from the Latin 'implexus' meaning intertwined and 'kome' meaning hair; alluding to the hairs on the plant.
Distribution:
Found along the coast of South Australia. Also found in Western Australia, Victoria and Tasmania.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Prostrate undershrub or the tomentose stems or branches climbing on adjoining shrubs. Leaves thick, warty, ovate or lanceolate to almost linear, often clustered, to 4 cm long. Flowers on usually slender peduncles to 20 mm long and often hairy. Flowers yellow inside, glabrous or hairy outside. Flowers throughout the year.
Fruit type:
Depressed-globular orange or red fleshy fruit to 5 mm diameter,  turning blackish when matured, crowned by the persistent perianth lobes.
Seed type:
Pale brown woody, three sided seed to 4 mm long and 4.2 mm wide.
Embryo type:
Peripheral.
Seed collecting:
Collect fruits that are maturing, turning orange, red or black and contain a hard woody seed inside.
Seed cleaning:
Place the berries in a bucket of water and rub the flesh off with your hands. Drain the water and wash again if required to remove all the flesh. Then spread the wet seeds on some paper towel and leave to dry. 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 100%.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
1000 (17.45 g)
1000 (17.45 g)
30-402-Dec-2005DJD276
South Eastern
28-Jul-2006100%-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.