Seeds of South Australia
Pultenaea largiflorens (Leguminosae)
Twiggy Bush-pea
List of species for Pultenaea
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Seed collecting:
October to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Southern Lofty, Kangaroo Island
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke
IBRA regions
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU B2ab(iii); D2)   (Probable Decline)   [found in Lashmar CP; requires specific habitat; grazed by kangaroos]
Fleurieu (KAN02) 
 Least Concern   (Probable Decline)   [heavily grazed by kangaroos]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern   (Probable Decline)   [heavily grazed by kangaroos]
Broughton (FLB02) 
 Least Concern
Southern Flinders (FLB04) 
 Least Concern
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [grazed by roos, sheep, goats]
Southern Yorke (EYB01)Eyre Yorke Block
 Regionally Extinct   [regionally extinct]
St Vincent (EYB02) 
 Rare   (IUCN: RA d(i))
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. Largiflorens from the Latin 'largus' meaning abundant and 'florens' meaning blooming; referring to the plentiful but small and non-showy flowers.
Distribution:
Found in the Flinders Ranges, Mount Lofty Ranges and Kangaroo Island in South Australia, with an old records from the Eyre and Yorke Peninsulas, growing in open woodland or mallee. Also found in New South Wales and Victoria.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Rigid shrub 1 m high with terete hairy stems. Leaves alternate, narrowly obovate, to 9 mm long and 4 mm wide, apex obtuse, recurved, upper surface usually glabrous, paler than lower; lower surface with pale, appressed hairs. Inflorescence clusters of 2–8 yellow to orange pea-flowers. Flowering between August and December.
Fruit type:
Hairy brown ovoid pod to 4 mm long.
Seed type:
Dark brown with black mottle reniform seed to 2.5 mm long and 1.5 mm wide, with a white aril.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods, those that are brown or turning brown and contain hard seeds inside.
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 100%.
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.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
4600 (14.8 g)
6700 (21.3 g)
30-4013-Dec-2004DJD 80
Southern Lofty
31-Mar-2006100%-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.