Seeds of South Australia
Stackhousia monogyna (Stackhousiaceae)
Creamy Stackhousia
List of species for Stackhousia
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Seed collecting:
November to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [loss of habitat]
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(ii))
Lucindale (NCP03) 
 Rare   (IUCN: RA d(ii))
Tintinara (NCP04) 
 Rare   (IUCN: RA d(ii))   [some records probably aspericocca]
Fleurieu (KAN02)Kanmantoo
 Near Threatened   [newly named S subterranea]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened   [newly named S subterranea]
Broughton (FLB02) 
 Least Concern
Olary Spur (FLB03) 
 Least Concern
Southern Flinders (FLB04) 
 Endangered   (IUCN: EN D)
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(i,ii))
Central Flinders (FLB06) 
 Least Concern
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern   [Now S. subterranea WR Barker]
St Vincent (EYB02) 
 Least Concern
Eyre Hills (EYB03) 
 Least Concern   [name changed to S subterranea]
Talia (EYB04) 
 Least Concern   [name changed to S subterranea]
Eyre Mallee (EYB05) 
 Least Concern   [name changed to S subterranea]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [likes rich wet soils]
Lowan Mallee (MDD04) 
 Near Threatened   [likes rich wet soils]
Wimmera (MDD05) 
 Near Threatened
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainRare
Fleurieu (KAN02)KanmantooNear Threatened
  [newly named S subterranea]
6 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
, Rare
, Endangered
5 of 5 subregionsEyre Yorke BlockLeast Concern
3 of 6 subregionsMurray Darling DepressionNear Threatened
, Rare
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 Stackhousia]
Name derivation:
'Stackhousia' after the cornish botanist and artist John Stackhouse (1742-1819) and Greek 'mono' single, 'gyne' woman, single ovary
Distribution:
Found throughout much of South Australia apart from the northern arid regions. Common on loam or sandy-loam soils, in sclerophyllous woodland
Plant description:
Glabrous perennial to 50 cm high. Leaves linear to lanceolate, rarely broad-elliptic, to 30 mm long, 2–4 mm wide. Inflorescence a dense cylindrical spike, corolla cream-white to light-yellow, the tube 5-8 mm long, the lobes 3.2-5.4 mm long. Flowering July - December.
Fruit type:
Fruit a non-fleshy schizocarp, 3 seeded
Seed type:
Seed broad-obovoid to broad-ellipsoid, green-brown, 1.5–3 mm, rugose to reticulate, the basal cavity shallow
Embryo type:
Straight
Seed collecting:
Remove flower spikes with mature seeds and store in until dry.
Seed cleaning:
Pass seed through sieves and aspirate to remove unwanted material
Seed germination:
Germination 80%, imbibed on 1% w/v agar for 5 weeks at 15°C. Germinated on 1% w/v agar supplemented with 250mg/L Gibberellic acid, 8/16 dark/light, 15°C. See http://data.kew.org/sid
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA2500 (7.92 g)100+26-Nov-2008DJD1290
Flinders Ranges
20-Jul-200996%-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:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Apr-0938%48 dNA
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions
Apr-0912%84 dNA
1% agar with 100mg/L potassium nitrate;
Incubated under spring/autumn conditions
Apr-096%112 dNA
1% agar;
Incubated under spring/autumn 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)