Seeds of South Australia
Hemichroa diandra (Amaranthaceae)
Mallee Hemichroa
List of species for Hemichroa
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Yorke Peninsula, Southern Lofty, Kangaroo Island
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [likes sandy, salty claypans]
St Vincent (EYB02)Eyre Yorke Block
 Near Threatened   (Probable Decline)   [salty, calcareous soils, coastal, habitats restricted]
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [in samphires]
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))   [restricted]
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))
Gawler Lakes (GAW03) 
 Least Concern
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))   [restricted]
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(i,ii))   [restricted]
Torrens (GAW06) 
 Near Threatened   [likes sandy, salty claypans]
Commonwealth Hill (GAW08) 
 Least Concern   [likes sandy, salty claypans]
Maralinga (GVD03)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06) 
 Rare   (IUCN: RA d(ii))
Nullarbor Plain (NUL02)Nullarbor
 Least Concern
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Least Concern
Oodnadatta (STP02)Stony Plains
 Rare   (IUCN: RA d(ii))   [likes sandy, salty claypans]
Murnpeowie (STP03) 
 Rare   (IUCN: RA d(ii))   [likes sandy, salty claypans]
Witjira (STP06) 
 Rare   (IUCN: RA d(ii))   [likes sandy, salty claypans]
IBRA regions
DISPLAY ALL
Northern Flinders (FLB05)Flinders Lofty BlockRare
  (IUCN: RA d(i,ii))   [likes sandy, salty claypans]
4 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
, Rare
7 of 8 subregionsGawlerLeast Concern
, Near Threatened
, Rare
2 of 4 subregionsGreat Victoria DesertRare
2 of 3 subregionsNullarborLeast Concern
Hampton (HAM01)HamptonLeast Concern
3 of 7 subregionsStony PlainsRare
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 Hemichroa]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
Hemichroa from the Greek 'hemi' meaning half and 'chroa' meaning colour; referring to the perianth of Hemichroa pentandra which is sometimes pink inside, whitish outside. Diandra from the Greek 'di' meaning two and 'andra' meaning stamen.
Distribution:
Found scattered across South Australia except near the eastern bounder, growing on sand and saline soils around salt lakes and coastal salt flats. Also found in all mainland states.
Status:
Native. Common in South Australia. Very rare in Queensland, New South Wales and Victoria. Common in the other states.
Plant description:
Woody forb to 30cm tall.  Leaves succulent, alternating up the stems, to 12 mm long, flat to linear, hairless, often with a curved point.  Flowers white or pink, with 5 'petals', solitary at the bases of the leaves. Flowering between July to January.
Fruit type:
Brown woody fruit, persistent in bract axils.
Embryo type:
Peripheral.
Seed collecting:
Collect fruit that are brown. Look for one with fat swilling at base.
Seed cleaning:
Place the fruit in a tray to dry. No further cleaning is required for storage. Each half of the fruit contain a seed in the woody swollen base. Store the fruit with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.