Seeds of South Australia
Pimelea glauca (Thymelaeaceae)
Smooth Riceflower
List of species for Pimelea
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Seed collecting:
October to December
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Near Threatened
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern
Glenelg Plain (NCP02) 
 Least Concern
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened
Broughton (FLB02) 
 Near Threatened   (Probable Decline)   [long lived, clonal]
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(i,ii))   [edge of habitat]
Southern Flinders (FLB04) 
 Least Concern
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
St Vincent (EYB02) 
 Near Threatened   (Probable Decline)   [long lived, clonal]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Near Threatened   [localised]
Murray Lakes and Coorong (MDD03) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Least Concern
IBRA regions
Mount Gambier (SVP02)Southern Volcanic PlainNear Threatened
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
2 of 2 subregionsKanmantooLeast Concern
4 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
, Rare
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
4 of 6 subregionsMurray Darling DepressionLeast 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 Pimelea]
Name derivation:
Greek 'pimele' fat, alluding to the fleshy cotyledons, glauca meaning thin bloom
Recorded on Eyre, Yorke and Fleurieu Peninsulas, Kangaroo Island and the South East of South Australia. Also recorded in Tasmania and the eastern mainland states. Growing in open forests and grasslands, coastal heaths and dunes on sandy soils..
Native, common in South Australia
Plant description:
Erect branched shrub to 1 m, glabrous except the inflorescence; heads terminal. Four involucral bracts glabrous outside, inner pair with short fine hairs and ciliate on the margins, outer pair glabrous inside, or nearly so. Flowering August to December.
Fruit type:
Seeds covered with a brown, papery perianth with short hairs on the outside, glabrous inside.
Seed type:
Ellipsoid black seed with a brittle, dark, finely ribbed seed coat. 
Embryo type:
Seed collecting:
Collect brown fruits with mature black seeds
Seed cleaning:
Gently rub fruits though a sieve, taking care not to damage the brittle seeds
Seed viability:
From one collection seed viability was high at 75%
Seed germination:
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jul-1612%28 dNA dry heat 90°C oven 15 min, 30% hydrogen peroxide 20 min, water rinse, 10% smoke water + 500 mg/L gibberellic acid 24 h;
1% agar;
8 weeks winter, then spring/autumn
Jul-160%NANA 30% hydrogen peroxide 20 min, water rinse;
1% agar;
8 weeks winter, then spring/autumn
Jul-160%NANA dry heat 90°C oven 15 min, 30% hydrogen peroxide 20 min, water rinse;
1% agar;
8 weeks winter, then spring/autumn
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)