Seeds of South Australia
Pycnosorus eremaeus (Compositae)
Yellow Drumsticks
List of species for Pycnosorus
Display more images
Click on an image to enlarge it
Seed collecting:
July to January
Herbarium regions:
Lake Eyre, Flinders Ranges
NRM region:
South Australian Arid Lands
IBRA regions
SUMMARY
Tallaringa (GVD05)Great Victoria Desert
 Least Concern   [likes low-lying cracking clay soil]
Dieri (SSD03)Simpson Strzelecki Dunefields
 Least Concern   [likes low-lying cracking clay soil]
Strzelecki Desert (SSD05) 
 Least Concern   [undercollected; likes low-lying cracking clay soil]
Breakaways (STP01)Stony Plains
 Least Concern   [likes low-lying cracking clay soil]
Oodnadatta (STP02) 
 Least Concern   [likes low-lying cracking clay soil]
Murnpeowie (STP03) 
 Least Concern   [likes low-lying cracking clay soil]
Macumba (STP05) 
 Least Concern   [likes low-lying cracking clay soil]
Witjira (STP06) 
 Least Concern   [likes low-lying cracking clay soil]
Baltana (STP07) 
 Least Concern   [likes low-lying cracking clay soil]
Sturt Stony Desert (CHC02)Channel Country
 Least Concern   [undercollected; likes low-lying cracking clay soil]
Coongie (CHC06) 
 Least Concern   [undercollected; likes low-lying cracking clay soil]
Lake Pure (CHC07) 
 Least Concern   [undercollected; likes low-lying cracking clay soil]
Pedirka (FIN04)Finke
 Least Concern   [likes low-lying cracking clay soil]
IBRA regions
DISPLAY ALL
Tallaringa (GVD05)Great Victoria DesertLeast Concern
  [likes low-lying cracking clay soil]
2 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
6 of 7 subregionsStony PlainsLeast Concern
3 of 4 subregionsChannel CountryLeast Concern
Pedirka (FIN04)FinkeLeast Concern
  [likes low-lying cracking clay soil]
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 Pycnosorus]
Name derivation:
Pycnosorus from the Greek 'pyknos' meaning dense or thick and 'soros' meaning heap, referring to the dense flowering heads of the genus. Eremaeus from the Greek 'eremos' meaning solitary, referring to its remote inland distribution.
Distribution:
Found in the north and north-eastern parts of South Australia, growing on heavy or rocky soils. Also found in the Northern Territory and Queensland.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Ascending or erect herb with stems arising from a woody tap-root, to 35 cm high. Leaves linear-ovate to narrow-spathulate, to 60 mm long and 6 mm wide, decreasing in length up the stem, hairy on both surface with a distinct white margin. Inflorescence a single ovoid or globose compound golden-yellow head to 25 mm long and 13 mm wide, mostly less than tice as long as wide. Flowering between June and December, but probably dependent on time of rainfall.
Fruit type:
Dense pale ovoid to globular heads with numerous seeds.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect heads that are drying off, fluffy and turning yellow-white with hard brown seeds. Pick off whole heads or pluck off mature seeds with your fingers.
Seed cleaning:
Place the heads in a tray and leave to dry for one to two weeks. Then rub the heads gently 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:
Seeds are non-dormant, viable seed should germinate readily.