Seeds of South Australia
Pultenaea canaliculata (Leguminosae)
Coast Bush-pea
List of species for Pultenaea
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Seed collecting:
November to January
Herbarium regions:
Eyre Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South East
IBRA regions
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened
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 Pultenaea]
Name derivation:
Pultenaea named after Richard Pulteney (1730 – 1801), an English physician, botanist and biographer of Carl Linnaeus. Canaliculata from the Latin 'canaliculatus' meaning with small grooves; referring to the upward curving leaves forming a deep groove.
Distribution:
Found in the southern part of South Australia, on the southern Eyre Peninsula, Kangaroo Island, Mount Lofty Ranges and the upper South-east, growing on coastal dunes and limestone cliffs. Also found in Victoria.
Status:
Native. Uncommon in South Australia. Rare in Victoria.
Plant description:
Rigid, spreading shrub to 2 m high with terete stems covered in dense silky hairs. Leaves alternate, terete, to 12 mm long and 1.5 mm wide, margins curved upwards, both surface densely hairy, stalk appressed to stem. Inflorescence terminal clusters of 2–4 yellow, orange and pea-flowers, often partially hidden among dense leaves. Flowering between September to November.
Fruit type:
Hairy brown ovoid pod to 5 mm long.
Seed type:
Brown with black mottled reniform seed to 2.5 mm long and 1.5 mm wide, with a cream aril.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods, those that are brown or turning brown and contain hard seeds inside. Might have to search for the pods as it can be partially hidden among dense leaves.
Seed cleaning:
Place the pods in a paper bag and leave to dry for one to two weeks. Then rub the pods with a rubber bung 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 one collection, the seed viability was high, at 95%.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate. The seed coat needs to be ruptured so that water can enter the seed before germination can occur. Methods to rupture the seed coat include scarification with sand paper or nicking the seed coat with a sharp blade or hot water treatment by immersion in boiling water.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jul-1696%7 d14 d seed coat nicked with scalpel, leached in water 24 h;
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)