Seeds of South Australia
Tribulus hystrix (Zygophyllaceae)
Sandhill Spiky Caltrop
List of species for Tribulus
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Seed collecting:
January to December
Herbarium regions:
Lake Eyre, Gairdner-Torrens
NRM region:
South Australian Arid Lands
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Data Deficient   [unreliable records]
Roxby (GAW07)Gawler
 Rare   (IUCN: RA d(ii))   [likes big red sand hills]
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Least Concern   [likes big red sand hills]
Dieri (SSD03) 
 Least Concern   [likes big red sand hills]
Warriner (SSD04) 
 Least Concern   [likes big red sand hills]
Strzelecki Desert (SSD05) 
 Least Concern   [likes big red sand hills]
Oodnadatta (STP02)Stony Plains
 Least Concern   [likes big red sand hills]
Murnpeowie (STP03) 
 Least Concern   [likes big red sand hills]
Peake-Dennison Inlier (STP04) 
 Least Concern   [likes big red sand hills]
Macumba (STP05) 
 Least Concern   [likes big red sand hills]
Witjira (STP06) 
 Least Concern   [likes big red sand hills]
Baltana (STP07) 
 Least Concern   [likes big red sand hills]
Sturt Stony Desert (CHC02)Channel Country
 Least Concern   [likes big red sand hills]
Diamantina-Eyre (CHC04) 
 Least Concern   [likes big red sand hills]
Coongie (CHC06) 
 Least Concern   [likes big red sand hills]
Lake Pure (CHC07) 
 Least Concern   [likes big red sand hills]
Pedirka (FIN04)Finke
 Near Threatened   [likes big red sand hills]
IBRA regions
DISPLAY ALL
Northern Flinders (FLB05)Flinders Lofty BlockData Deficient
  [unreliable records]
Roxby (GAW07)GawlerRare
  (IUCN: RA d(ii))   [likes big red sand hills]
4 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
6 of 7 subregionsStony PlainsLeast Concern
4 of 4 subregionsChannel CountryLeast Concern
Pedirka (FIN04)FinkeNear Threatened
  [likes big red sand hills]
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 Tribulus]
Name derivation:
Tribulus from the Greek 'tribolos' meaning water-chestnut and translated into Latin as 'tribulos' which originally meant the caltrop, a 4-pointed military instrument, employed to lame advancing cavalry, and the name also applied to Tribulus terrestris. Hystrix from Greek meaning hedgehog; alluding to its spiny fruit.
Distribution:
Found in the north-east part of South Australia, growing on sand dunes. Also found  Western Australia, Northern Territory and Queensland.
Status:
Native. Common in South Australia. Uncommon in Western Australia. Common in the other states.
Plant description:
Prostrate or ascending perennial herb covered with woolly or curly hairs. Leaves opposite, the larger with 8-10 pairs of ovate leaflets. Inflorescence solitary axils of leaves with large bright yellow flowers. Flowering between March and November.
Fruit type:
Hairy fruit covered  unequal spines o 12 mm long.
Seed type:
2-4 seeds in each woody fruit.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect fruits that are hard and turning brown. Some fruits maybe split and laying on the ground. Be careful when collecting as the fruits are spiny.
Seed cleaning:
No further cleaning is required if only fruits are 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.
Seed germination:
This species have physical and physiological dormancies that needs to be overcome for the seed to germinate.