Seeds of South Australia
Stenopetalum velutinum (Cruciferae)
Velvety Thread-petal
List of species for Stenopetalum
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))
Kingoonya (GAW05)Gawler
 Least Concern
Roxby (GAW07) 
 Near Threatened
Commonwealth Hill (GAW08) 
 Near Threatened
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Least Concern
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern
Hampton (HAM01)Hampton
 Least Concern
Bimbowrie (BHC05)Broken Hill Complex
 Data Deficient
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened
Breakaways (STP01)Stony Plains
 Near Threatened
Oodnadatta (STP02) 
 Least Concern
Peake-Dennison Inlier (STP04) 
 Near Threatened
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Near Threatened
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened
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
Northern Flinders (FLB05)Flinders Lofty BlockRare
  (IUCN: RA d(i,ii))
3 of 8 subregionsGawlerLeast Concern
, Near Threatened
4 of 4 subregionsGreat Victoria DesertLeast Concern
Hampton (HAM01)HamptonLeast Concern
Bimbowrie (BHC05)Broken Hill ComplexData Deficient
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsNear Threatened
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
2 of 4 subregionsChannel CountryNear 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 Stenopetalum]
Name derivation:
Stenopetalum from the Greek 'stenos' meaning narrow and 'petalon' meaning petals; referring to the narrow petals. Velutinum from the Latin 'velutinus' meaning velvety; referring to velvety hairs on the plant.
Found scattered in the northern part of South Australia, growing in sandy soil. Also found in all mainland states.
Native. Common in South Australia. Presumed Extinct in New South Wales. Rare in Victoria. Common in then other states.
Plant description:
Erect, annual woody herbs to 65 cm tall, densely hairy. Leaves lanceolate, to 7 cm long, entire or remotely dentate, reducing above. Inflorescence a terminal spike with  yellow-green to brown flowers. Flowers throughout the year.
Fruit type:
Brown subglobose to oblong pod to 8 mm long, pedicels erect to slightly spreading.
Seed type:
Brown reinform seed to 1.4 mm long and 0.8 mm wide, with a tuberculate surface.
Embryo type:
Seed collecting:
Collect maturing pods those turning pale brown with brown seeds inside. Be gentle with the pods as they split open easily.
Seed cleaning:
Place the pods in a tray and cover with paper to prevent seeds from popping out and leave to dry for a week. Then rub the dried pods gently by hand 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.