Seeds of South Australia
Lepidium oxytrichum (Cruciferae)
Green Peppercress
List of species for Lepidium
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Seed collecting:
August to November
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Olary Spur (FLB03)Flinders Lofty Block
 Least Concern
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(i))   [arid zone spp. Possibly grazed ]
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   [southern edge of range; northern spp]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Gawler Lakes (GAW03) 
 Least Concern
Arcoona Plateau (GAW04) 
 Least Concern
Kingoonya (GAW05) 
 Least Concern
Torrens (GAW06) 
 Least Concern
Roxby (GAW07) 
 Least Concern
Commonwealth Hill (GAW08) 
 Near Threatened
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Least Concern
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern
Carlisle (NUL01)Nullarbor
 Least Concern
Nullarbor Plain (NUL02) 
 Rare   (IUCN: RA d(ii))
Barrier Range Outwash (BHC04)Broken Hill Complex
 Least Concern
Bimbowrie (BHC05) 
 Least Concern
Curnamona (BHC06) 
 Least Concern
Warriner (SSD04)Simpson Strzelecki Dunefields
 Least Concern
Strzelecki Desert (SSD05) 
 Near Threatened
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
Coongie (CHC06) 
 Least Concern
Lake Pure (CHC07) 
 Least Concern
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Least Concern
Everard Block (CER03) 
 Least Concern
Tieyon (FIN03)Finke
 Least Concern
Pedirka (FIN04) 
 Least Concern
IBRA regions
DISPLAY ALL
4 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
South Olary Plain (MDD01)Murray Darling DepressionRare
  (IUCN: RA d(ii))   [southern edge of range; northern spp]
8 of 8 subregionsGawlerLeast Concern
, Near Threatened
4 of 4 subregionsGreat Victoria DesertLeast Concern
2 of 3 subregionsNullarborLeast Concern
, Rare
3 of 4 subregionsBroken Hill ComplexLeast Concern
2 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
, Near Threatened
7 of 7 subregionsStony PlainsLeast Concern
3 of 4 subregionsChannel CountryLeast Concern
3 of 3 subregionsCentral RangesLeast Concern
2 of 2 subregionsFinkeLeast 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 Lepidium]
Name derivation:
Lepidium from the Greek 'lepis' meaning a scale; referring to the appearance of the fruits. Oxytrichum from the Greek 'oxys' meaning sharp)and 'thrix' meaning hair; referring to the needle-like hairs on the stems and fruit.
Distribution:
Found across the northern part of South Australia, growing on sandy and loamy soils. Also found in Western Australia, Northern Territory, Queensland and New South Wales
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Erect ephemeral or annual herb to 30 cm high, stems with needle-like hairs and often purple on mature plants. Basal leaves pinnate to bipinnate, to 10 cm long, stem leaves reducing to remotely toothed. Inflorescence an elongating spike with tiny white flowers. Flowering between June and September.
Fruit type:
Brown elliptic to obovate pod 5 mm long and 4 mm wide, with scattered needle-like hairs and wings in upper half forming an open notch at the apex.
Seed type:
Orange reinform seed to 1.7 mm long and 1 mm wide, with fine tuberculated surface.
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.