Malacocera gracilis

Amaranthaceae

Slender Soft-horns

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plant: Malacocera gracilis plant habit Chinamans Creek(2)

plant: Malacocera gracilis plant habit Chinamans Creek 2 Sep 2016 (2)

fruit: Malacocera gracilis fruit Chinamans Creek 2 Sep 2016 (7)

fruit: Malacocera gracilis fruitChinamans Creek 2 Sep 2016 (8)

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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Common names

Slender Soft-horns

Distribution and status

Herbarium regions: Gairdner-Torrens, Eastern, Eyre Peninsula
AVH map: SA distribution map (external link)

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
MSB	1,030 (2.76 g)	30-40	30-Sep-2008	TST536 Eyre Peninsula		80%
BGA MSB	2,900 (7.6 g) 2,900 (7.6 g)	100+	2-Sep-2016	JRG418 Eyre Peninsula	1-Nov-2017	75%	-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-17	59%	14	70	250 mg/L gibberellic acid for 24 h; 1% agar; Incubated under winter conditions
May-17	45%	7		1% agar; 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)

Southern Flinders (FLB04)	Flinders Lofty Block	Vulnerable (IUCN: VU B2ab(i,ii)) (Probable Decline) [DD - not sure if declining]
Myall Plains (GAW01)	Gawler	Vulnerable (IUCN: VU D2) [localised at L Gilles]
Gawler Lakes (GAW03)		Rare (IUCN: RA d(ii))
Roxby (GAW07)		Rare (IUCN: RA d(ii)) [endemic to SA; likes low-lying calcareous soils]
Barrier Range Outwash (BHC04)	Broken Hill Complex	Vulnerable (IUCN: VU B2ab(i,ii)) (Probable Decline) [DD - not sure if declining]
Curnamona (BHC06)		Vulnerable (IUCN: VU B2ab(i,ii)) (Probable Decline) [DD - not sure if declining]
Strzelecki Desert (SSD05)	Simpson Strzelecki Dunefields	Near Threatened [endemic to SA; likes low-lying calcareous soils]
Murnpeowie (STP03)	Stony Plains	Rare (IUCN: RA d(ii)) [endemic to SA; likes low-lying calcareous soils]