Seeds of South Australia
Olearia passerinoides ssp. passerinoides (Compositae)
Feather Daisy-bush
List of species for Olearia
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Seed collecting:
December to June
Herbarium regions:
Eastern, Eyre Peninsula, Murray
NRM regions:
Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Data Deficient   [1 old record]
Eyre Hills (EYB03)Eyre Yorke Block
 Least Concern
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Murray Mallee (MDD02) 
 Near Threatened   (Probable Decline)   [could be more records]
Lowan Mallee (MDD04) 
 Near Threatened   (Probable Decline)   [could be more records]
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [limited habitat]
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Yalata (NUL03)Nullarbor
 Rare   (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 Olearia]
Name derivation:
Olearia named after Johann Gottfried Ölschläger (1603-1671), 17th century German horticulturist and author of a flora of Halle in Germany (his name was latinized to Olearius). Alternatively, it maybe from the Latin 'olearius' pertaining to oil, from 'olea', for olive tree; alluding to the first named species resembling the olive. Passerinoides means resembling Passerina, of sparrows or sparrow-like but unsure of the reference to the species.
Distribution:
Found on the Eyre Peninsula and in Muarry in South Australia, growing in mallee on sand dunes, sclerophyll forest and open shrubland. Also found in Western Australia, New South Wales and Victoria.
Status:
Native. Uncommon in South Australia. Uncommon in the other states.
Plant description:
Shrub to 2 m high. Leaves alternate, linear to 12 mm long, pex acute or rounded, appressed to the stems. Flowers terminal, solitary with 6-9 white or pale mauve ray florets and yellow desk florets. Flowering between November and April. Differ from the other subspecies found in South Australia, Olearia passerinoides spp. glutescens, which has clustered flower-head, 8-15 ray florets, long and spreading leaves and seeds to 20 mm long.
Fruit type:
Pale brown daisy head.
Seed type:
Brown short cylindrical seed to 2 mm long (excluding the pappus), covered in scattered hairs and long pappus bristles at one end.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect heads that are large and fluffy. Either pick off the whole heads or use your finger and pull off the seeds from the head. Mature seeds will come off easily.
Seed cleaning:
Place the heads in a tray for a week to dry. No cleaning is required if only pure seeds are collected. If heads are collected, then rub the heads gently with your hands to dislodge the seeds. Viable seeds will be fat and hard. 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.