Seeds of South Australia
Lepidium leptopetalum (Cruciferae)
Slender Peppercress
List of species for Lepidium
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Seed collecting:
September to January
Herbarium regions:
Lake Eyre, Flinders Ranges, Eastern, Eyre Peninsula
NRM regions:
Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Broughton (FLB02)Flinders Lofty Block
 Regionally Extinct   [Regionally Extinct.]
Olary Spur (FLB03) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [grazed, edge of range]
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(ii))
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU D2)
Eyre Hills (EYB03)Eyre Yorke Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern
Murray Mallee (MDD02) 
 Least Concern
Braemer (MDD07) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [grazed, edge of range]
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))   [edge of range]
Myall Plains (GAW01)Gawler
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(i,ii))
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 Lepidium]
Name derivation:
Lepidium from the Greek 'lepis' meaning a scale; referring to the appearance of the fruits. Leptopetalum from the Greek 'leptos' meaning slender and 'petalum' meaning petals; referring to the species narrow petals.
Distribution:
Found in the east central part of South Australia, growing in semi-arid areas on on calcareous soils. Also found in New South Wales and Victoria.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Erect perennial shrub to 60 cm tall. Leaves linear to subterete, succulent, clustered, to 5 cm long. Inflorescence a short spike with white to yellow flowers. Flowering between July and November.
Fruit type:
Pale brown ovoid pods with winged in the upper half forming an open notch at the top.
Seed type:
Orange reniform seed to 6 mm long and 3 mm wide.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods those turning pale brown with hard 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.