Seeds of South Australia
Ptilotus seminudus (Amaranthaceae)
List of species for Ptilotus
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Seed collecting:
December to February
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula
NRM regions:
Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
IBRA regions
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(i,ii))   [mallee sp; edge of range; tolerates grazing]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Data Deficient   [mallee sp, edge of range; limited habitat; around Gawler area; questionable ID, could be spathulatus]
Broughton (FLB02) 
 Rare   (IUCN: RA d(i))   [limited habitat, likes mallee]
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(i))   [limited habitat, likes mallee]
St Vincent (EYB02)Eyre Yorke Block
 Least Concern
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern
Murray Mallee (MDD02) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Murray Scroll Belt (RIV06)Riverina
 Least Concern
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
IBRA regions
Fleurieu (KAN02)KanmantooRare
  (IUCN: RA d(i,ii))   [mallee sp; edge of range; tolerates grazing]
3 of 6 subregionsFlinders Lofty BlockRare
, Data Deficient
4 of 5 subregionsEyre Yorke BlockLeast Concern
3 of 6 subregionsMurray Darling DepressionLeast Concern
Murray Scroll Belt (RIV06)RiverinaLeast Concern
2 of 8 subregionsGawlerLeast Concern
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))
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 Ptilotus]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
Ptilotus from the Greek 'ptilotos' meaning feathered or winged; referring to the hairy flowers. Seminudus from the Latin 'semi' meaning half and 'nudus' meaning naked; possibly referring to the flowers.
Found on Eyre Peninsula, northern Mount Lofty Ranges and along the Murray River in South Australia, growing on red-brown silty or sandy loams, on low dunes and between ridges, in mallee scrub associations. Also found in Western Australia, New South Wales and Victoria.
Native. Common in South Australia. Rare in Western Australia. Uncommon in the other states.
Plant description:
Prostrate or semi-prostrate herbs to 10 cm high and 30 cm wide with hairy stems, glabrescent with age. Basal leaves obovate or elliptic, glabrous, to 90 mm long and 20 mm wide, bases long-attenuate, shorter than upper expanded portion. Stem leaves ovate, obovate or elliptic, sparsely hairy, to 20 mm long and 8 mm wide, bases cuneate or attenuate. flower-spikes terminal or pseudo-terminal, globose or ovoid, to 5 cm long, with 50 green, grey or white flowers. Bract to 9 mm long, bracteoles to 10 mm long, both with apices aristate, perianth to 17 mm long, green, grey or white, tepals with lower third glabrous, except some verticillate hairs to 0.5 mm long marginally, remainder with moderately dense hairs to 10 mm long, hairs exceeding apices. Flowering between August and December.
Fruit type:
White to pale brown ovoid head containing numerous long papery and hairy fruits, each containing one seed.
Embryo type:
Seed collecting:
Be very careful when collecting this species as the fruits contain fine hairs that may cause an allergic reaction for some people. Collect the fruit heads when dried to a pale straw colour. Each fruit should come off the head easily when fingers are rubbed up the stem. Collect more fruits than required as not all fruits will have a viable seed.
Seed cleaning:
Be very careful when cleaning this species as the fruits contain fine hairs that may cause an allergic reaction for some people. To clean, rub the fruit heads gently to dislodge the seed at the base of each fruit. 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:
Seeds are non-dormant, viable seed should germinate readily.