Seeds of South Australia
Hibbertia pallidiflora (Dilleniaceae)
Pale Guinea-flower
List of species for Hibbertia
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Seed collecting:
October to January
Herbarium regions:
Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke, South East
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU B2ab(iii))   (Probable Decline)   [on limestone ridges & shallow red soils]
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU D2)
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [stronghold is on KI]
Fleurieu (KAN02) 
 Critically Endangered   (IUCN: CR B2ab(i,ii,iii); D)   (Probable Decline)   [only known from Cape Jervis; database problems; development (subdivisions), vehicles - threats]
Southern Yorke (EYB01)Eyre Yorke Block
 Vulnerable   (IUCN: VU D2)   (Probable Decline)   [Coastal, sandy soils, limestone]
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Vulnerable   (IUCN: VU D1+2)   [on limestone ridges & shallow red soils; edge of range]
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 Hibbertia]
Name derivation:
Hibbertia named after George Hibbert (1757-1837), a London merchant who maintained a private botanic garden at Chelsea. Pallidiflora from the Latin 'pallidus' meaning pale and 'florus' meaning flower; referring to the pale yellow petals.
Distribution:
Found on the tip of Yorke and Fleurieu Peninsulas, Kangaroo Island and in the South-east in South Australia, growing on moist sandy to gravelly soils, sometimes close to temporarily flooded areas, commonly associated with limestone mainly in scrub of coastal heath or mallee vegetation. Also found in Victoria.
Status:
Native. Uncommon in South Australia. Rare in Victoria.
Plant description:
Dense shrublets with flexible branches often scrambling to 1.5 m rarely up to 4 m high, covered in hairs. Leaves without axillary tuft of hairs, petiole to 1.6 mm long. leaves obovate to oblanceolate, 10.4 mm long and 7.2 mm wide, rounded to rarely obtuse with apex of central vein bulging and covered with stellate hairs, more or less abruptly tapering into petiole, usually flat, hairy above and below. Flowers pale yellow petals being shorter than the calyx and remaining tubular (not opening widely), on peduncle to 17.3 mm long, terminal on all branches or leaf-opposing when overtopped by growth from axillary buds, with linear bract. Flowering between August and December.
Fruit type:
Brown capsule with 2 carpels, pubescent, with erect styles from the apex
Seed type:
Brown ovoid seed to 2.5 mm long and 2 mm wide.
Seed collecting:
Collect mature capsules, those that are turning a pale straw colour and contain brown seeds.
Seed cleaning:
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.
Seed viability:
This genus tend to have low seed viability. From one collection, the seed viability was average, at 50%.
Seed germination:
This species has morphophysiological dormancy and can be difficult to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
1180 (3.33 g)
1180 (3.33 g)
14-Nov-2006DJD668
Kangaroo Island
1-Aug-200750%-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.