Seeds of South Australia
Zygophyllum simile (Zygophyllaceae)
White Twinleaf
List of species for Zygophyllum
Display more images
Click on an image to enlarge it
Seed collecting:
August to February
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray, Yorke Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Broughton (FLB02)Flinders Lofty Block
 Least Concern   [very similar to Z amonophilum; needs more work]
Olary Spur (FLB03) 
 Least Concern   [very similar to Z amonophilum; needs more work]
Southern Flinders (FLB04) 
 Least Concern   [very similar to Z amonophilum; needs more work]
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
St Vincent (EYB02)Eyre Yorke Block
 Least Concern   [very similar to Z amonophilum; needs more work]
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(ii))   [split from Z amophilum]
Talia (EYB04) 
 Rare   (IUCN: RA d(ii))   [split from Z amophilum]
Eyre Mallee (EYB05) 
 Least Concern   [split from Z amophilum]
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern
Murray Mallee (MDD02) 
 Least Concern
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Braemer (MDD07) 
 Least Concern   [very similar to Z amonophilum; needs more work]
Murray Scroll Belt (RIV06)Riverina
 Least Concern
Myall Plains (GAW01)Gawler
 Near Threatened   [split from Z amophilum]
Gawler Volcanics (GAW02) 
 Least Concern   [split from Z amophilum]
Gawler Lakes (GAW03) 
 Least Concern   [split from Z amophilum]
Arcoona Plateau (GAW04) 
 Least Concern   [split from Z amophilum]
Kingoonya (GAW05) 
 Least Concern   [split from Z amophilum]
Torrens (GAW06) 
 Least Concern
Roxby (GAW07) 
 Least Concern
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern   [split from Z amophilum]
Kintore (GVD04) 
 Least Concern
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern   [split from Z amophilum]
Yalata (NUL03)Nullarbor
 Rare   (IUCN: RA d(ii))   [split from Z amophilum]
Barrier Range Outwash (BHC04)Broken Hill Complex
 Least Concern   [very similar to Z amonophilum; needs more work]
Bimbowrie (BHC05) 
 Least Concern   [very similar to Z amonophilum; needs more work]
Curnamona (BHC06) 
 Least Concern   [very similar to Z amonophilum; needs more work]
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Near Threatened
Dieri (SSD03) 
 Least Concern
Warriner (SSD04) 
 Least Concern
Strzelecki Desert (SSD05) 
 Least Concern
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Least Concern
Murnpeowie (STP03) 
 Least Concern
Peake-Dennison Inlier (STP04) 
 Least Concern
Macumba (STP05) 
 Least Concern
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Diamantina-Eyre (CHC04) 
 Least Concern
Coongie (CHC06) 
 Least Concern
Lake Pure (CHC07) 
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Least Concern
Everard Block (CER03) 
 Least Concern
Tieyon (FIN03)Finke
 Least Concern
IBRA regions
DISPLAY ALL
5 of 6 subregionsFlinders Lofty BlockLeast Concern
4 of 5 subregionsEyre Yorke BlockLeast Concern
, Rare
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
Murray Scroll Belt (RIV06)RiverinaLeast Concern
8 of 8 subregionsGawlerLeast Concern
, Near Threatened
4 of 4 subregionsGreat Victoria DesertLeast Concern
Yalata (NUL03)NullarborRare
  (IUCN: RA d(ii))   [split from Z amophilum]
3 of 4 subregionsBroken Hill ComplexLeast Concern
4 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
, Near Threatened
7 of 7 subregionsStony PlainsLeast Concern
4 of 4 subregionsChannel CountryLeast Concern
, Near Threatened
3 of 3 subregionsCentral RangesLeast Concern
Tieyon (FIN03)FinkeLeast 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 Zygophyllum]
Name derivation:
Zygophyllum from the Greek 'zygon' meaning pair and 'phyllon' meaning leaf; referring to the pair of leaflets making up each leaf. Simile from Latin meaning similar; possibly alluding to the species similarity to Zygophyllum ammophilum, from which the species was split from.
Distribution:
Found across South Australia except on Kangaroo Island and in the South-East, growing in a variety of habitats and on different soils. Also found in all mainland states.
Status:
Native. Common in South Australia. Rare in Victoria. Common in the other states.
Plant description:
Erect or ascending much-branched annual herb to 30 cm high with spreading and ascending stems. Leaves to 40 mm long, green; leaflets articulate at base, linear to narrow-oblong to 20 mm long and 4 mm wide, fleshy, apex rounded. Flowers yellow with 4 cuneate petals, apex often 3-lobed or sometimes blunt with a wavy margin. Flowering between May and December.
Fruit type:
Yellow-brown round, four segmented capsule to 7 mm long with paper wings, drooping, truncate at apex with a short point, 1 or 2 seeds per cell.
Seed type:
Dark brown ovoid to wedge-shaped seeds to 3 mm long and 1.5 mm wide, with a tuberculate surface.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect semi-dried and dried capsules by running your hands through the stems of the plant. Mature fruits will come off easily and will have a hard and dark seed inside each segment.
Seed cleaning:
Place the capsules in a tray and leave to dry for 1 to 2 weeks, depending on the greeness of the fruit. Then rub the dried capsules to dislodge the seeds. Use a sieve to remove the unwanted material. 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%.