Seeds of South Australia
Pultenaea villifera var. glabrescens (Leguminosae)
Splendid Bush-pea
List of species for Pultenaea
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Seed collecting:
December to February
Herbarium region:
Kangaroo Island
NRM region:
Kangaroo Island
IBRA region
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D1+2)   [endemic to KI; on north-west side; B Overton: prob around 250 plants in total; M Haby prob stable]
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. Villifera from the Latin 'ville' meaning long weak hairs and 'fera' meaning bearing; referring to the presence of long thin hairs on the leaves and bracteoles. Glabrescens  from the Latin 'glabresco' meaning becoming glabrous; referring to this variety having glabrous or with a few hairs only on the stem and leaf margins compared to the other variety P. villifera var. villifera.
Distribution:
Endemic to South Australia and found only along the north coast on Kangaroo Island, growing in dry sclerophyll forests to open mallee woodlands often dominated by Allocasuarina verticillata or Eucalyptus baxteri, E. cladocalyx, E. leucoxylon, heaths, grasslands and coastal cliffs on sandy to gravelly clay over sandstone, basalt, limestone or rhyolite.
Status:
Native. Rare in South Australia.
Plant description:
Erect to prostrate shrub to 2 m high with branchlets glabrous to sparsely hairy. Leaves alternate, to 26 mm long and 9 mm wide, triangular to linear, ovate to elliptic, glabrous to sparsely hairy, apex acute to acuminate, pungent. Inforescences axillary with single yellow to orange with red striation at front pea-flowers. Flowering between October and December.
Fruit type:
Hairy brown ovoid pod to 7.5 mm long.
Seed type:
Brown with black mottled reniform seed to 2.5 mm long and 2.2 mm wide, with a cream aril.
Embryo type:
Bent.
Seed collecting:

Collect maturing pods, those that are brown or turning brown and contain dark hard seeds inside. 

In 2016 a second provenance collection for this rare endemic pea was achieved from De Mole River on Kangaroo island with the support of the Australian Seed Bank Partnership.

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 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
1600 (7.35 g)
1675 (7.4 g)
~6014-Dec-2004MKJ 51
Kangaroo Island
31-Mar-200670%-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:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jun-1776%1435 seed coat nicked with scalpel;
potting mix;
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)