Seeds of South Australia
Newcastelia spodiotricha (Chloanthaceae)
Dukes Grey-bush
List of species for Newcastelia
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Seed collecting:
December to February
Herbarium regions:
North Western, Lake Eyre
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Maralinga (GVD03)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Kintore (GVD04) 
 Near Threatened   [edge of range; grows on desert sanddunes]
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 Data Deficient   [limited habitat; 2 old records]
Watarru (CER02) 
 Rare   (IUCN: RA d(ii))   [edge of range; grows on desert sanddunes]
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 Newcastelia]
Name derivation:
Newcastelia named in honour of Henry Pelham Clinton, 5th Duke of Newcastle (1811-1868), who was Secretary of State for the Colonies between 1852 and 1854, and supplied funds for the north-western Australian Government Expedition of 1855. Spodiotricha from the Greek 'spodios' meaning ash-colored, grey and 'thrix' meaning hair; referring to the species grey appearance due to hairs on the stems, leaves and buds.
Found scattered in the north and north-western parts of South Australia, growing on sand dunes. Also found in Western Australia, Northern Territory and Queensland.
Native. Uncommon in South Australia. Rare in Queensland. Common in the other states.
Plant description:
Erect grey shrub to 2 m high with branchlets covered in dense grey hairs. Leaves to 6.5 mm long and 3 mm wide, broad-ovate to elliptic-ovate with broadly revolute margins, covered in dense short greyish hairs, with major veins conspicuous underneath. Flower-spike terminal, cylindrical-shaped, covered in greyish hairs, with 5 to numerous blue flowers. Flowering between September and December.
Fruit type:
White-grey woolly obovoid to globose fruit.
Seed type:
Brown globular seed to 3 mm long and 2 mm wide.
Seed collecting:
Collect mature fruit-heads, those turning a straw colour. Rub the fruit with your hands to see if there is any mature seeds before collecting. Collect by breaking off the whole fruit spike.
Seed cleaning:
Place the fruit-spikes in a tray and leave to dry for two weeks. Then rub the capsules gently by hand or with a rubber bung 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.