Seeds of South Australia
Anthocercis angustifolia (Solanaceae)
Narrow-leaf Ray-flower
List of species for Anthocercis
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Seed collecting:
October to January
Herbarium regions:
Flinders Ranges, Northern Lofty, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Arid Lands
IBRA region
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [comes up after fire; very limited; at Morialta/Blackhill; foot traffic & olives - threats]
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [after fire]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))   [ephemeral; comes up after fire; localised spp]
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 Anthocercis]
Name derivation:
Anthocercis from the Greek 'anthos', meaning a flower and 'kerkis', meaning a ray, referring to the narrow corolla lobes. Angustifolia from the Latin 'angustus' meaning narrow and 'folius' meaning a leaf, referring to the narrow leaves of this species.
Endemic to South Australia and found in the Flinders Ranges and the southern Mount Lofty Ranges growing on steep rocky slopes on clay-loam; prolific particularly after fires. 
Native. Rare in South Australia.
Plant description:
An open erect shrub to 2 m tall, covered in fine hairs. Leaves linear, rarely narrowly elliptic to obovate; sessile, to 50 mm long and 6 mm wide (juvenile leaves larger); entire, pubescent, the lower leaves glabrescent. Flowers solitary; large white to creamy-yellow with five star-like petals. Flowering between May and November.
Fruit type:
Papery brown ovoid to pear-shaped capsule to 9 mm long, containing numerous seeds.
Seed type:
Bean-shaped brown seeds to 3 mm long and covered with honeycomb depressions.
Embryo type:
Linear fully developed.
Seed collecting:
Collect maturing capsules, those that are turning brown with hard brown seeds inside. Monitor the plants as the capsules will dry, split and disperse the seeds in a short space of time. Using of a small bag (ie. Organza bags) to enclose the developing capsules will help to increase the chances of collecting sufficient viable seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for a week. Then gently rub the capsules 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.
Seed viability:
From two collections, the seed viability was high at 100%.
Seed germination:
This species is generally difficult to germinate, it has physiological dormancy and complex germination requirements.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
4500 (5.96 g)
4500 (5.96 g)
Southern Lofty
19-Sep-2008100%+5°C, -18°C
BGA5300 (7.48 g)40+22-Dec-2008KHB208
Southern Lofty
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
Jul-080%NANA after ripening 45°C oven 6 weeks, aerosol smoke 15 min;
filter paper over moist sand;
Incubated under winter conditions
Jul-080%NANA after ripening 45°C oven 6 weeks;
filter paper over moist sand;
Incubated under winter conditions
Jul-080%NANA leached in water 72 h;
filter paper over moist sand;
Incubated under winter conditions
filter paper over moist sand;
Incubated under winter conditions
1% agar with 100 mg/L potassium nitrate;
Incubated under spring/autumn conditions
1% agar with 250 mg/L gibberellic acid;
Incubated under spring/autumn conditions
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)