Seeds of South Australia
Chrysocephalum pterochaetum (Compositae)
Perennial Sunray
List of species for Chrysocephalum
Click on an image to enlarge it
Seed collecting:
November to March
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, South Eastern
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South East
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))   [southern limit]
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(i,ii))   [southern limit]
Arcoona Plateau (GAW04) 
 Least Concern
Kingoonya (GAW05) 
 Least Concern
Roxby (GAW07) 
 Least Concern
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Least Concern
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern
Carlisle (NUL01)Nullarbor
 Least Concern
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Near Threatened
Murnpeowie (STP03) 
 Near Threatened
Peake-Dennison Inlier (STP04) 
 Near Threatened
Macumba (STP05) 
 Near Threatened
Witjira (STP06) 
 Near Threatened
Baltana (STP07) 
 Near Threatened
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened
Diamantina-Eyre (CHC04) 
 Near Threatened
Coongie (CHC06) 
 Near Threatened
Lake Pure (CHC07) 
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Least Concern
Everard Block (CER03) 
 Least Concern
Tieyon (FIN03)Finke
 Least Concern
Pedirka (FIN04) 
 Near Threatened
IBRA regions
DISPLAY ALL
2 of 6 subregionsFlinders Lofty BlockLeast Concern
6 of 8 subregionsGawlerLeast Concern
, Rare
4 of 4 subregionsGreat Victoria DesertLeast Concern
Carlisle (NUL01)NullarborLeast Concern
7 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
4 of 4 subregionsChannel CountryNear Threatened
3 of 3 subregionsCentral RangesLeast Concern
2 of 2 subregionsFinkeLeast Concern
, Near Threatened
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 Chrysocephalum]
Name derivation:
Chrysocephalum from the Greek 'chryso' meaning golden and 'cephalus' meaning a head; referring to the golden flower heads. Pterochaetum from the Greek 'pteron' meaning wing or feather and 'chaite' meaning bristle; referring to the feather-like pappus attached to the seed.
Distribution:
Found in the northern part of South Australia, growing in sand among rocks, in or near dry creek beds, sandy gibber and rocky hill slopes. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Rigid bushy perennial herb to 40 cm tall or subshrub with a woody stock or lower woody branches. Branches white-felty with somewhat matted woolly-cobwebby hairs. Leaves linear to linear-oblanceolate, with recurved margins, a blunt apex and a broadly sessile base, mostly to 30 mm long and 1.5 mm wide, glandular-scabrid on both sides, sometimes with scattered woolly hairs. Flower-heads in clusters of 3-8 golden-brown to brown daisy-heads. Flowering between June and October.
Fruit type:
Pale brown fluffy daisy-head.
Seed type:
Brown ovoid seed to 1 mm long and 0.5 mm wide, covered in small tubercules and with long pappus.
Embryo type:
Spatulate.
Seed collecting:
Collect whole heads that are brown and fluffy or collect just the seeds by plucking it off with your fingers. Mature seeds are easily removed.
Seed cleaning:
Place the heads in a tray for a week to dry. Then pluck the seeds from the head with your finders. Viable seeds will be fat and brown. 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 viability:
From one collection, the seed viability was high, at 100%.
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
BGA9500 (1.49 g)50+11-Mar-2007RJB70940
Gairdner-Torrens
19-Sep-2008100%-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.