Seeds of South Australia
Westringia rigida (Labiatae)
Stiff Western Rosemary
List of species for Westringia
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Seed collecting:
November to January
Herbarium regions:
North Western, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Tintinara (NCP04)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(i,ii))   [undercollected; around Monarto; could be stable]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [relictual outlier; no recruitment]
Broughton (FLB02) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Olary Spur (FLB03) 
 Least Concern   (Probable Decline)
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Northern Flinders (FLB05) 
 Least Concern   [likes limestone]
Central Flinders (FLB06) 
 Least Concern   [likes limestone]
Southern Yorke (EYB01)Eyre Yorke Block
 Near Threatened   (Probable Decline)
St Vincent (EYB02) 
 Near Threatened   (Probable Decline)
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern   [goats a threat]
Murray Mallee (MDD02) 
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range]
Lowan Mallee (MDD04) 
 Least Concern
Braemer (MDD07) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA b)   (Probable Decline)   [not typical habitat]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Gawler Lakes (GAW03) 
 Least Concern
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))
Commonwealth Hill (GAW08) 
 Near Threatened   [edge of range]
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Rare   (IUCN: RA d(i,ii))   [outlier]
Yellabinna (GVD06) 
 Least Concern
Carlisle (NUL01)Nullarbor
 Least Concern
Nullarbor Plain (NUL02) 
 Least Concern
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Least Concern
Bimbowrie (BHC05)Broken Hill Complex
 Rare   (IUCN: RA d(ii))   (Probable Decline)
IBRA regions
DISPLAY ALL
Tintinara (NCP04)Naracoorte Coastal PlainRare
  (IUCN: RA d(i,ii))   (Probable Decline)
Fleurieu (KAN02)KanmantooRare
  (IUCN: RA d(i,ii))   [undercollected; around Monarto; could be stable]
6 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Vulnerable
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
5 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA b)   (Probable Decline)   [not typical habitat]
6 of 8 subregionsGawlerLeast Concern
, Near Threatened
, Rare
3 of 4 subregionsGreat Victoria DesertLeast Concern
, Rare
3 of 3 subregionsNullarborLeast Concern
Hampton (HAM01)HamptonLeast Concern
Bimbowrie (BHC05)Broken Hill ComplexRare
  (IUCN: RA d(ii))   (Probable Decline)
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 Westringia]
Name derivation:
Westringia named after Dr Johan Peter Westring (1753-1783), a Swedish physician and writer on lichens. Rigida from the Latin 'rigidus' meaning stiff; referring to the stiff leaves and stems.
Distribution:
Found across the middle part of South Australia, growing on shallow or deep sandy soils, frequently overlying limestone or sandstone, in Eucalyptus mallee or open Eucalyptus woodland communities. Also found in all states except in the Northern Territory.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Erect shrub to 0.6 m high. Leaves in whorls of 3 or 4, ovate to lanceolate, to 5.2 mm long and 2 mm wide, rigid, sparsely to moderately hairy. Inflorescence raceme-like on leafy branches with flowers tubular white, often with a mauve tinge, with orange to orange-brown dots. Flowering between August and November.
Fruit type:
Dark brown woody capsule to 1.8 mm long, with four segments.
Seed type:
Brown ovoid seed to 3 mm long and 1.5 mm wide, with a large plug on one side.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect capsules that are fat and turning brown. A lot of time will be required to collect sufficient amount of seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently with a rubber bung to dislodge the seeds. Use a sieve to separate 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 germination:
This species has physiological dormancy that needs to be overcome for the seed to germinate.