Plants of
South Australia
Hibbertia pallidiflora
Dilleniaceae
Pale Guinea-flower,
Round-leaf 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
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock paintings: 5

Prior names

Hibbertia billardieri, partly

Hibbertia aspera, partly

Hibbertia sp. C, partly

Hibbertia aspera, partly

Common names

Pale Guinea-flower

Round-leaf Guinea-flower

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
BGA1,384 (2.132 g)1316-Jan-2022JRG865
Kangaroo Island
7-Jul-202245%-18°C
BGA1,380 (3.820 g)182-Dec-2021D.A.Young (West Bay Road)
Kangaroo Island
7-Jul-202270%-18°C
BGA3,800 (10.490 g)1018-Dec-2021D.A.Young (Vivonne Bay)
Kangaroo Island
7-Jul-20225%-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.