Pimelea stricta

Thymelaeaceae

Gaunt Riceflower,

Erect Riceflower

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plant: Pimelea stricta plant Frahn Scrub

plant: Pimelea stricta plant habit Frahn Scrub

plant: Pimelea stricta Battery Track plant

plant: Pimelea stricta lf Denzel Murfet Rockleigh

plant: Pimelea stricta lf under Denzel Murfet Rockleigh

flower: Pimelea stricta flowers Frahn Scrub

flower: Pimelea stricta flowers Frahn Scrub 2

seedling: Pimelea stricta sdlg Denzel Murfet Black Point

seedling: Pimelea stricta sdlng Denzel Murfet Black Point

Regional Species Conservation Assessments per IBRA subregion.

Least concern

Near threatened

Rare

Vulnerable

Endangered

Critically endangered

Extinct

Data deficient

Adelaide

Arkaroola

Ceduna

Coober Pedy

Hawker

Innamincka

Marla

Marree

Mount Gambier

Oodnadatta

Renmark

Wudinna

Keith

Yunta

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Botanical art

Kath Alcock paintings: 7

Common names

Gaunt Riceflower

Erect Riceflower

Etymology

Greek 'pimele' fat, alluding to the fleshy cotyledons and Latin 'strictus' rigid.

Distribution and status

Mostly light sandy soils in open woodland, mallee or sandhills. Native
Herbarium regions: Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
AVH map: SA distribution map (external link)

Plant description

Erect shrub to 1.5m, stems glabrous. Leaves narrow-elliptic, 5.5-37 mm long, 1-5 mm wide, acute. Inflorescence a bracteate head, flowers 9-37 per head 10-15mm long, creamy white. Flowering July-October. Fruits are fruit approximately 5 mm long, green, enclosed in hypanthium base. Seeds are seed narrow-ovoid, hooked at the apex, glabrous, black, reticulate.

Seeds stored:

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Location	No. of seeds (weight grams)	Number of plants	Date collected	Collection number Collection location	Date stored	% Viability	Storage temperature
BGA MSB	4,380 (15.34 g) 4,380 (15.34 g)	50+	2-Nov-2006	DJD646 Northern Lofty	1-Aug-2007	100%	-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.

Germination table:

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Date	Result	T0	T50	Pre-treatment \| Germination medium \| Incubator: Photoperiod / Thermoperiod
May-07	23%	63	NA	20% hydrogen peroxide 10 min, water rinse; filter paper over moist sand; 6 weeks summer, 6 weeks spring/autumn, 6 weeks winter, 6 weeks spring/autumn, 6 weeks summer, 6 weeks spring/autumn;
May-07	11%	82	NA	20% hydrogen peroxide 10 min, water rinse; filter paper over moist sand; 6 weeks winter, 6 weeks spring/autumn, 6 weeks summer, 6 weeks spring/autumn, 6 weeks winter, 6 weeks spring/autumn;
May-07	11%	48	NA	20% hydrogen peroxide 10 min, water rinse; filter paper over moist sand; Incubated under spring/autumn conditions
May-07	1%	48	NA	20% hydrogen peroxide 10 min, water rinse; filter paper over moist sand; Incubated under winter conditions

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)

Bridgewater (NCP01)	Naracoorte Coastal Plain	Rare (IUCN: RA d(ii))
Glenelg Plain (NCP02)		Vulnerable (IUCN: VU D2)
Lucindale (NCP03)		Near Threatened
Tintinara (NCP04)		Least Concern
Kangaroo Island (KAN01)	Kanmantoo	Near Threatened (Probable Decline) [likes limestone; habitat loss]
Fleurieu (KAN02)		Least Concern
Mount Lofty Ranges (FLB01)	Flinders Lofty Block	Least Concern
Broughton (FLB02)		Near Threatened (Probable Decline)
Olary Spur (FLB03)		Rare (IUCN: RA d(i,ii)) (Probable Decline)
Southern Flinders (FLB04)		Least Concern
Northern Flinders (FLB05)		Rare (IUCN: RA d(ii))
Central Flinders (FLB06)		Near Threatened
St Vincent (EYB02)	Eyre Yorke Block	Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline)
Eyre Hills (EYB03)		Least Concern
Talia (EYB04)		Rare (IUCN: RA d(ii)) (Probable Decline)
Eyre Mallee (EYB05)		Least Concern
Murray Mallee (MDD02)	Murray Darling Depression	Least Concern
Murray Lakes and Coorong (MDD03)		Near Threatened
Lowan Mallee (MDD04)		Least Concern
Wimmera (MDD05)		Vulnerable (IUCN: VU D2)
Gawler Volcanics (GAW02)	Gawler	Near Threatened
Gawler Lakes (GAW03)		Rare (IUCN: RA d(i,ii))
Bimbowrie (BHC05)	Broken Hill Complex	Rare (IUCN: RA d(i,ii)) (Probable Decline)

4 of 4 subregions	Naracoorte Coastal Plain	Least Concern , Near Threatened , Rare , Vulnerable
2 of 2 subregions	Kanmantoo	Least Concern , Near Threatened
6 of 6 subregions	Flinders Lofty Block	Least Concern , Near Threatened , Rare
4 of 5 subregions	Eyre Yorke Block	Least Concern , Rare , Vulnerable
4 of 6 subregions	Murray Darling Depression	Least Concern , Near Threatened , Vulnerable
2 of 8 subregions	Gawler	Near Threatened , Rare
Bimbowrie (BHC05)	Broken Hill Complex	Rare (IUCN: RA d(i,ii)) (Probable Decline)