Seeds of South Australia
Ptilotus obovatus (Amaranthaceae)
Silver-tails
List of species for Ptilotus
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Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern
Central Flinders (FLB06) 
 Least Concern   [lots of NC records]
Tallaringa (GVD05)Great Victoria Desert
 Least Concern   [lots of NC records]
Warriner (SSD04)Simpson Strzelecki Dunefields
 Least Concern   [lots of NC records]
Strzelecki Desert (SSD05) 
 Least Concern   [lots of NC records]
Breakaways (STP01)Stony Plains
 Least Concern   [lots of NC records]
Oodnadatta (STP02) 
 Least Concern   [lots of NC records]
Murnpeowie (STP03) 
 Least Concern   [lots of NC records]
Peake-Dennison Inlier (STP04) 
 Least Concern   [lots of NC records]
Macumba (STP05) 
 Least Concern   [lots of NC records]
Witjira (STP06) 
 Least Concern   [lots of NC records]
Baltana (STP07) 
 Least Concern   [lots of NC records]
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Lake Pure (CHC07) 
 Least Concern   [lots of NC records]
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern   [lots of NC records]
Everard Block (CER03) 
 Least Concern   [lots of NC records]
Tieyon (FIN03)Finke
 Least Concern   [lots of NC records]
IBRA regions
DISPLAY ALL
2 of 6 subregionsFlinders Lofty BlockLeast Concern
Tallaringa (GVD05)Great Victoria DesertLeast Concern
  [lots of NC records]
2 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
7 of 7 subregionsStony PlainsLeast Concern
2 of 4 subregionsChannel CountryLeast Concern
2 of 3 subregionsCentral RangesLeast Concern
Tieyon (FIN03)FinkeLeast Concern
  [lots of NC records]
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. Obovatus from Latin meaning obovate or inverted egg-shaped; referring to leaf.
Distribution:
Found across the northern and central parts of South Australia, growing in a variety of habitats across drier area. Also found in all mainland states.
Status:
Native. Common in South Australia. Very rare in Victoria. Common in South Australia.
Plant description:
Shrubby roundish perennials to 120 cm across, much-branched from the base or from the top (then forming terminal clusters), intricate branchlets and foliage softly hairy, cream to greyish or greyish-glaucous, stems finally becoming dark-barked. Leaves usually obovate to lanceolate-elliptic, to 6 cm long and 2 cm wide. Flower-spikes hemispherical to oblong and short-cylindrical, to 5 cm long, many on right-angled peduncles, often composed in an irregular clusters, with pink to grey flowers.
Fruit type:
Small head containing numerous long papery and hairy fruits, each containing one seed.
Embryo type:
Peripheral.
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.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
(38.8 g)MKJ114-Aug-20060%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.