Plants of
South Australia
Hibbertia pallidiflora
Dilleniaceae
Pale Guinea-flower
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
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Oodnadatta
Renmark
Wudinna
Keith
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Botanical art

Kath Alcock paintings: 5.

Etymology

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 and status

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. Native. Uncommon in South Australia. Rare in Victoria.
Herbarium regions: Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Northern and Yorke, South East
AVH map: SA distribution map (external link)

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 over-topped by growth from axillary buds, with linear bract. Flowering between August and December. Fruits are brown capsule with 2 carpels, pubescent, with erect styles from the apex. Seeds are brown ovoid seed to 2.5 mm long and 2 mm wide.

Seed collection and propagation

Collect seeds between October and January. Collect mature capsules that are turning a pale straw-colour and contain brown seeds. 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. This genus tend to have low seed viability. From one collection, the seed viability was average, at 50%. This species has morpho-physiological dormancy and can be difficult to germinate.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
1,180 (3.33 g)
1,180 (3.33 g)
6014-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.