Seeds of South Australia
Gossypium sturtianum var. sturtianum (Malvaceae)
Sturts Desert-rose
List of species for Gossypium
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))
Kintore (GVD04)Great Victoria Desert
 Least Concern
Curnamona (BHC06)Broken Hill Complex
 Rare   (IUCN: RA d(ii))   [edge of range]
Murnpeowie (STP03)Stony Plains
 Near Threatened
Witjira (STP06) 
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Least Concern
Everard Block (CER03) 
 Least 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 Gossypium]
Name derivation:
Gossypium from the Latin 'gossypion', named used by Pliny the Elder to describe the cotton tree, which is derived from the Arabic 'goz' meaning soft such as cotton; referring to the fluffy white seed covering common to the genus. Sturtianum named after Captain Charles Napier Sturt (1795-1869), a British explorer of Australia, and collector of e type specimen.
Distribution:
Found in two disjunct areas in South Australia, in the far north-western corner and around the Flinders Ranges, growing on rocky or gravelly ranges, hills or rises and along watercourses and run-on areas. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Uncommon in Western Australia. Common in the other states.
Plant description:
Erect woody shrub to 3 m high, grabrous. Leaves glabrous, alternate, ovate or rounded to 6 cm long, folded along the main vein, dark green and with a long stalk to 3 cm. Leaves are strongly scented when crushed. Inflorescence solitary large mauve to lilac with a dark red centre flower. Flowers throughout the year.
Fruit type:
Brown with black-dotted, papery ovoid capsule o 16 mm long, with numerous seeds.
Seed type:
Segmented brown seed to 6 mm long and 3 mm wide, covered in dense whitish green to brown hairs.
Embryo type:
Folded.
Seed collecting:
Collect capsules that are drying off and starting to turn brown. The seed inside should be brown and hard.
Seed cleaning:
Place the capsules into a tray and leave to dry for a week. Then rub the capsules 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.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).