Seeds of South Australia
Arabidella nasturtium (Cruciferae)
Yellow cress
List of species for Arabidella
Display more images
Click on an image to enlarge it
Seed collecting:
August to December
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray
NRM regions:
Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Olary Spur (FLB03)Flinders Lofty Block
 Least Concern
Southern Flinders (FLB04) 
 Least Concern   [annual, dry country, seasonal conditions]
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   [unpalatable; edge of range]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Vulnerable   (IUCN: VU D2)   [record moved from BW IBRA - SA White, Coorong]
Braemer (MDD07) 
 Least Concern
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))
Myall Plains (GAW01)Gawler
 Near Threatened   (Probable Decline)   [ephemeral ]
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(i,ii))   [D Symon checked - ok]
Gawler Lakes (GAW03) 
 Least Concern   [ephemeral ]
Arcoona Plateau (GAW04) 
 Least Concern   [ephemeral ]
Torrens (GAW06) 
 Rare   (IUCN: RA d(i,ii))
Barrier Range (BHC01)Broken Hill Complex
 Least Concern
Barrier Range Outwash (BHC04) 
 Least Concern
Bimbowrie (BHC05) 
 Least Concern
Curnamona (BHC06) 
 Least Concern
Warriner (SSD04)Simpson Strzelecki Dunefields
 Least Concern
Oodnadatta (STP02)Stony Plains
 Least Concern
Murnpeowie (STP03) 
 Least Concern
Peake-Dennison Inlier (STP04) 
 Least Concern
Macumba (STP05) 
 Near Threatened
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Diamantina-Eyre (CHC04)Channel Country
 Rare   (IUCN: RA d(i,ii))   [outlier]
IBRA regions
4 of 6 subregionsFlinders Lofty BlockLeast Concern
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
, Vulnerable
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(ii))
5 of 8 subregionsGawlerLeast Concern
, Near Threatened
, Rare
4 of 4 subregionsBroken Hill ComplexLeast Concern
Warriner (SSD04)Simpson Strzelecki DunefieldsLeast Concern
6 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
Diamantina-Eyre (CHC04)Channel CountryRare
  (IUCN: RA d(i,ii))   [outlier]
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 Arabidella]
Name derivation:
Arabidella a diminutive of 'arabis' which is a Greek word for mustard or cress. Nasturtium from the Latin 'nasus tortus' meaning twisted nose, a Latin name for garden water cress (Lepidium sativum) which has a sharp smell and taste that will give you a "twisted nose", possibly referring to the plant's pungent odour.
Found in the north-eastern part of South Australia growing in a variety of habitats on disturbed soil or near temporary water. Also found in all mainland States.
Native. Common in South Australia. Uncommon in Western Australia, Northern Territory and Victoria. Common in the other States.
Plant description:
Decumbent to erect annual herb to 50 cm tall, glabrous. Leaves multisect to 3 cm long; segments linear. Flowers are yellow along a long flower spike. Flowering between May and October.
Fruit type:
Long narrow pods to 3 cm long on a long spike.
Seed type:
Tiny yellow semi-flat reniform seeds to 0.8 mm long and 0.5 mm wide.
Embryo type:
Seed collecting:
Collect pods that are maturing, drying off and turning brown, with yellow seeds inside.
Seed cleaning:
Place pods in a tray and cover with paper to prevent seeds from popping out and leave to dry for a week. Then rub the pods gently with your hands to dislodge the seeds. Use a sieve to separate they 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 need to be overcome for the seed to germinate.