Seeds of South Australia
Erodium cygnorum (Geraniaceae)
Blue Heron's bill
List of species for Erodium
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Seed collecting:
September to December
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
SUMMARY
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02) 
 Least Concern
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))
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
Nullarbor Plain (NUL02)Nullarbor
 Least Concern
Yalata (NUL03) 
 Rare   (IUCN: RA d(ii))
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Near Threatened
Strzelecki Desert (SSD05) 
 Near Threatened
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Near Threatened
Murnpeowie (STP03) 
 Near Threatened
Sturt Stony Desert (CHC02)Channel Country
 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
IBRA regions
DISPLAY ALL
6 of 8 subregionsGawlerLeast Concern
, Rare
4 of 4 subregionsGreat Victoria DesertLeast Concern
2 of 3 subregionsNullarborLeast Concern
, Rare
2 of 4 subregionsSimpson Strzelecki DunefieldsNear Threatened
3 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
2 of 4 subregionsChannel CountryNear Threatened
3 of 3 subregionsCentral RangesLeast Concern
Tieyon (FIN03)FinkeLeast 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 Erodium]
Name derivation:
Erodium from the Greek 'erodios' meaning heron; alluding to the fruit resembling the head and beak of this bird. Cygnorum from the Latin 'cygnis' meaning a cygnet or young swan; possibly alluding to the shape of the flower and flower-stalk, bent like a swan's neck. 
Distribution:
Found in the northern part of South Australia, growing in a open areas. Also found in Western Australia, Northern Territory and Queensland.
Status:
Native. Common in South Australia. Uncommon in Queensland. Common in the other states.
Plant description:
Decumbent to ascending perennial or annual herb to 50 cm high with stems covered in hairs. Leaves with 3 principal lobes, pubescent as the stems. Flowers in clusters of 2-6, rarely solitary, with blue to purple petals. Flowering between July and October.
Fruit type:
Long brown capsule.
Seed type:
Brown ovoid seed to 6 mm long and 1 mm wide, covered in long white hairs and with a 12 cm long hairy awn-like attachment.
Seed collecting:
Collect matured capsules, those that are turning brown and have exposed brown seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry fro 1 to 2 weeks. If only seeds collected, no further cleaning is required. If other material is collected, use a sieve to separate 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).