Purple Coral-pea,
Native Lilac
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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
Mount Gambier (SVP02) | Southern Volcanic Plain | Data Deficient |
Bridgewater (NCP01) | Naracoorte Coastal Plain | Near Threatened [edge of range] |
Tintinara (NCP04) | | Near Threatened |
Kangaroo Island (KAN01) | Kanmantoo | Rare (IUCN: RA d(ii)) |
Fleurieu (KAN02) | | Near Threatened |
Mount Lofty Ranges (FLB01) | Flinders Lofty Block | Least Concern |
Broughton (FLB02) | | Rare (IUCN: RA d(ii)) |
Southern Flinders (FLB04) | | Rare (IUCN: RA d(ii)) |
Southern Yorke (EYB01) | Eyre Yorke Block | Least Concern |
St Vincent (EYB02) | | Vulnerable (IUCN: VU C2a(i)) (Probable Decline) |
Eyre Hills (EYB03) | | Least Concern |
Talia (EYB04) | | Least Concern |
Eyre Mallee (EYB05) | | Rare (IUCN: RA d(i,ii)) |
Murray Mallee (MDD02) | Murray Darling Depression | Rare (IUCN: RA d(i,ii)) [edge of range] |
Murray Lakes and Coorong (MDD03) | | Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline) [weeds a threat] |
Mount Gambier (SVP02) | Southern Volcanic Plain | Data Deficient |
2 of 4 subregions | Naracoorte Coastal Plain | Near Threatened |
2 of 2 subregions | Kanmantoo | Near Threatened , Rare |
3 of 6 subregions | Flinders Lofty Block | Least Concern , Rare |
5 of 5 subregions | Eyre Yorke Block | Least Concern , Rare , Vulnerable |
2 of 6 subregions | Murray Darling Depression | Rare , Vulnerable |
Botanical art
Kath Alcock paintings: 5
Prior names
Kennedia monophylla
Hardenbergia monophylla
Glycine violacea
Common names
Purple Coral-pea
Native Lilac
Etymology
Hardenbergia, named after Franziska, Countess von Hardenberg, a 19th century Austrian noblewoman, patron of botany and a sister of Baron von Hügel who collected plants in Western Australia in 1833. Violacea, from Latin meaning violet colour, referring to the typical colour of the flower.
Distribution and status
Found in the southern South Australia from the Eyre Peninsula to the upper South-east, growing in drier open-forests and woodlands. Also found in Queensland, New South Wales, Victoria and Tasmania. Native. Common in South Australia. Very rare in Tasmania. Common in the other States.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)
Plant description
Scrambling or trailing perennial shrub with branches that twist around the stems of other plants. Leaves leathery, glabrous; ovate to lanceolate, to 10 cm long, arranged alternately along the stem on stalks to 4 cm long. Inflorescence in axillary clusters with violet (rarely pink or white) pea-flowers. Flowering between July and November. Fruits are dark brown flattened oblong pod to 50 mm long by 8 mm wide. Seeds are orange reniform seed to 4.2 mm long and 2.2 mm wide. Seed embryo type is bent.
Seed collection and propagation
Collect seeds between November and January. Collect mature pods, those turning brown that contain hard seeds inside. Place the pods in a tray and cover with paper to prevent seeds popping out and leave to dry for a week. Then rub the pods with your hands to dislodge the seeds. Use a sieve to separate the 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. From two collections, the seed viability was high, ranging from 90% to 100%. This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).
Location | No. of seeds (weight grams) | Number of plants | Date collected | Collection number Collection location | Date stored | % Viability | Storage temperature | BGA MSB | 16,100 (215 g) 16,100 (215 g) | 100 | 8-Dec-2004 | DJD74 Eyre Peninsula | 31-Mar-2006 | 100% | -18°C |
BGA | 1,540 (34.34 g) | | 18-Dec-2005 | KHB16 Murray | 7-Aug-2006 | 90% | -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 |
Mar-15 | 100% | 7 | 14 |
seed coat nicked with scalpel; 1% agar; Incubated under spring/autumn conditions |
Mar-15 | 100% | 7 | 7 |
seed coat nicked with scalpel; 1% agar; Incubated under winter conditions |
Mar-15 | 4% | 14 | NA |
1% agar; Incubated under spring/autumn conditions |
Mar-15 | 2% | 21 | NA |
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)