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
Display IBRA region text
| Olary Spur (FLB03) | Flinders Lofty Block | Vulnerable (IUCN: VU C2a(i)) (Definite Decline) [Goats & climate change a threat] |
| South Olary Plain (MDD01) | Murray Darling Depression | Vulnerable (IUCN: VU D2) [restricted habitat] |
| Murray Scroll Belt (RIV06) | Riverina | Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline) |
| Bimbowrie (BHC05) | Broken Hill Complex | Vulnerable (IUCN: VU C2a(i)) (Definite Decline) [Goats & climate change a threat] |
Etymology
Dianella is a diminutive of Diana, the virginal Roman goddess of hunting and the moon. The original species named was found located in the French woods, thus the hunting association. Porracea from the Latin 'porraceus' meaning leek-green; alluding to the colour of the flowers.
Distribution and status
Found in two disjunction populations in South Australia, west of Broken Hill and aound the upper reaches of the Murray River, growing on sandy soils and usually in the vicinity of water. Also found in Queensland, New South Wales and Victoria. Native. Rare in South Australia. Rare in Victoria. Uncommon in Queensland. Common in New South Wales.
Herbarium regions: Eastern, Murray
NRM regions: South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)
Plant description
Perennial lily to 1.2 m high forming tufts to 60 cm wide. Leaves to 20 mm wide, about the same breadth throughout its length; leaf blades glaucous or purplish, thick-textured. Flower-spike a small cyme with 2-10 pale-blue to green-blue flowers; anthers yellow. Flowers in October. Fruits are round blue berries containing numerous seeds. Seeds are shiny black ovoid seeds to 4 mm long and 3 mm wide. Seed embryo type is linear fully developed.
Seed collection and propagation
Collect seeds between November and January. Pick the fruits that are soft and purple. These will have hard black seeds inside. It is best to clean the fruit when it is fresh. Place fruits in a bucket of water and rub the fruit gently by hand to dislodge the seeds. Then use a sieve to separate unwanted material. 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. Seeds are non-dormant, viable seed should germinate readily.
| Location | No. of seeds
(weight grams) | Number
of plants | Date
collected | Collection number
Collection location | Date
stored | % Viability | Storage
temperature | | BGA | 230 (2.01 g) | 3 | 28-Nov-2011 | MJT367
Murray | 1-Nov-2012 | 66% | -18°C |
| BGA | 800 (5.76 g) | 7 | 14-Dec-2011 | MJT373
Murray | 1-Nov-2012 | 89% | -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:
Display
| Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
| May-13 | 68% | 8 | 24 |
aerosol smoke 15 min, 500 mg/L gibberellic acid 72 h;
1% agar;
12/12; / 20°C |
| May-13 | 58% | 16 | 30 |
aerosol smoke 15 min;
1% agar;
12/12; / 20°C |
| May-13 | 56% | 16 | 52 |
1% agar;
12/12; / 20°C |
| Jun-12 | 48% | 21 | NA |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions |
| May-13 | 44% | 8 | NA |
500 mg/L gibberellic acid 72 h;
1% agar;
12/12; / 20°C |
| Jun-12 | 20% | 35 | NA |
1% agar;
Incubated under spring/autumn conditions |
| Jun-12 | 16% | 35 | NA |
1% agar with 100 mg/L potassium nitrate;
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)
