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
| Mann-Musgrave Block (CER01) | Central Ranges | Rare (IUCN: RA d(ii)) |
| Everard Block (CER03) | | Rare (IUCN: RA d(i,ii)) |
Botanical art
Kath Alcock painting: 1.
Etymology
Hibbertia, named after George Hibbert (1757-1837), a London merchant who maintained a private botanic garden at Chelsea. Glaberrima meaning very glabrous, referring to the species being devoid of hairs.
Distribution and status
Found in far north-western South Australia, growing on rocky soil in rocky areas. Also found in Western Australia and the Northern Territory. Native. Rare in South Australia. Uncommon in the other States.
Herbarium region: North Western
NRM region: Alinytjara Wilurara
AVH map: SA distribution map (external link)
Plant description
Glabrous spreading shrub to 50 cm high. Leaves linear-oblong to lanceolate or linear-elliptic, slightly recurved at the tip; usually to 100 mm long and 12 mm wide. Flowers yellow, large to 3 cm across on solitary pedicels; single bract at the base of the calyx, linear, leaf-like but shorter than the sepals. Flowers throughout the year. Fruits are brown glabrous capsule with 3 carpels with 6-9 ovules in each, Seeds are brown, globular seed to 2.1 mm diameter.
Seed collection and propagation
Collect seeds between January and December. Collect mature capsules that are turning a pale straw-colour and contain brown seeds. Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently by hand 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 This genus tends to have low seed viability. From one collection, the seed viability was average, at 65%. This species has morpho-physiological dormancy and can be difficult to germinate.
| Location | No. of seeds
(weight grams) | Number
of plants | Date
collected | Collection number
Collection location | Date
stored | % Viability | Storage
temperature | BGA
MSB | 2,500 (9.05 g)
2,500 (9.05 g) | 20+ | 4-Sep-2013 | DJD2693
North Western | 24-Mar-2015 | 65% | -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 |
| Sep-14 | 36% | 29 | NA |
500 mg/L gibberellic acid 24 h;
filter paper over moist sand;
Incubated under spring/autumn conditions |
| Sep-14 | 2% | 46 | NA |
dry heat 90 °C oven 15 minutes, 500 mg/L gibberellic acid + 10% smoke water 24 h;
filter paper over moist sand;
Incubated under spring/autumn conditions |
| Sep-14 | 2% | 35 | NA |
dry heat 90 °C oven 15 minutes, 500 mg/L gibberellic acid 24 h;
filter paper over moist sand;
Incubated under spring/autumn conditions |
| Sep-14 | 0% | NA | NA |
dry heat 90 °C oven 15 min, 10% smoke water 24 h;
filter paper over moist sand;
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)
