Erect Guinea-flower,
Bristly Guinea-flower
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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
| Glenelg Plain (NCP02) | Naracoorte Coastal Plain | Rare (IUCN: RA d(i,ii)) [taxonomic issues, to be renamed] |
| Lucindale (NCP03) | | Rare (IUCN: RA d(ii)) [taxonomic issues, to be renamed] |
| Tintinara (NCP04) | | Rare (IUCN: RA d(ii)) [taxonomic issues, to be renamed] |
| Kangaroo Island (KAN01) | Kanmantoo | Least Concern |
| Fleurieu (KAN02) | | Least Concern |
| Mount Lofty Ranges (FLB01) | Flinders Lofty Block | Least Concern |
| Eyre Hills (EYB03) | Eyre Yorke Block | Rare (IUCN: RA d(ii)) [can be confused with H sp Glabriuscula] |
| Murray Mallee (MDD02) | Murray Darling Depression | Least Concern [to be renamed H sp Glabriuscula] |
| Lowan Mallee (MDD04) | | Least Concern [to be renamed H sp Glabriuscula] |
| Wimmera (MDD05) | | Rare (IUCN: RA d(i,ii)) [taxonomic issues, to be renamed] |
Prior names
Pleurandra riparia
Hibbertia stricta, partly
Common names
Erect Guinea-flower
Bristly Guinea-flower
Etymology
Hibbertia, named after George Hibbert (1757-1837), a London merchant who maintained a private botanic garden at Chelsea. Riparia, from the Latin 'riparius' meaning of a river bank, possible alluding to the habitat where the type specimen was collected.
Distribution and status
Found in the southern part of South Australia, growing in a diverse range of habitats. Also found in Queensland, New South Wales, Victoria and Tasmania. Native. Common in South Australia. Common in the other States.
Herbarium regions: Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Kangaroo Island, South East
AVH map: SA distribution map (external link)
Plant description
Low usually erect shrub or with the longer branches drooping; to 50 cm high; branchlets closely stellate-pubescent to almost glabrous with scattered minute hairs. Leaves linear, often narrowly so, obtuse or sub-obtuse, to 20 mm long and 2 mm wide; scabrous above and below with simple or stellate hairs or almost glabrous or softly stellate-pubescent; the margins revolute to the broad prominent midrib. Flowers yellow, to 2 cm across; sessile or occasionally on peduncles up to 20 mm long; bracts at the base of the calyx usually 0, sometimes a few and usually 1 on the peduncle where this is produced. Flowering between July and November. Fruits are brown capsule with 2 carpels with 3-6 ovules in each, pubescent. Seeds are brown, globular seed to 2.1 mm diameter.
Seed collection and propagation
Collect seeds between September and January. Collect mature capsules, those 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 tend to have low seed viability. From one collection, the seed viability was average, at 62%. This species has morpho-physiological dormancy and can be difficult to germinate.
Germination table:
Display
| Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
| May-15 | 62% | 43 | 89 |
500 mg/L gibberellic acid + 10% smoke water 48 h;
1% agar;
Incubated under winter conditions |
| May-15 | 18% | 60 | NA |
seed coat nicked with scalpel;
1% agar;
Incubated under winter conditions |
| Dec-14 | 16% | 42 | NA |
400 mg/L gibberellic acid + 10% smoke water 48 h;
moist sand;
Incubated under winter conditions |
| Dec-14 | 14% | 56 | NA |
400 mg/L gibberellic acid 48 h;
moist sand;
Incubated under winter conditions |
| May-15 | 12% | 50 | NA |
500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under winter conditions |
| Dec-14 | 0% | NA | NA |
leached in water 48 h;
moist sand;
Incubated under winter conditions |
| May-15 | 0% | NA | 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)
