Seeds of South Australia
Pachymitus cardaminoides (Cruciferae)
Sand Cress
List of species for Pachymitus
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Seed collecting:
September to December
Herbarium regions:
Flinders Ranges, Eastern, Eyre Peninsula, Murray, Yorke Peninsula, South Eastern
NRM regions:
Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
IBRA regions
Fleurieu (KAN02)Kanmantoo
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [Hartley area, few collections, could be extinct]
Olary Spur (FLB03)Flinders Lofty Block
 Data Deficient   (IUCN: CR D)
Southern Flinders (FLB04) 
 Data Deficient
St Vincent (EYB02)Eyre Yorke Block
 Data Deficient
Eyre Mallee (EYB05) 
 Data Deficient
South Olary Plain (MDD01)Murray Darling Depression
 Data Deficient
Murray Mallee (MDD02) 
 Least Concern   (IUCN: RA d(ii))   (Probable Decline)
Murray Lakes and Coorong (MDD03) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [picked up in recent surveys]
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Gawler Lakes (GAW03)Gawler
 Data Deficient
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 Pachymitus]
Name derivation:
Pachymitus from the Greek 'pachys' meaning thick and 'mitos' meaning a thread; referring to the stout pedicels. Cardaminoides means resembling the genus Cardamine (from the Greek 'kardamon' a name given by Dioscorides for a species of cress, an Indian spice).
Found scattered in the east central part of South Australia, growing on a variety of soil types and habitats. Also found in New South Wales and Victoria.
Native. Common in South Australia. Common in the other states.
Plant description:
Erect, many-stemmed annual herb to 30 cm high, hairy. Basal leaves petiolate, to 13 cm long, pinnately lobed, the lateral lobes linear to toothed, stem leaves reducing to entire, sessile. Inflorescence a dense elongated spike with white flowers. Flowering between June and October.
Fruit type:
Long hairy, brown pod to 19 mm long and 1.6 mm wide.
Embryo type:
Seed collecting:
Collect maturing pods, 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.