Plants of
South Australia
Orianthera nuda
Loganiaceae
Bare Logania
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Regional Species Conservation Assessments per IBRA subregion.
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Near threatened
Rare
Vulnerable
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Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
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Etymology

Logania named after James Logan (1674-1751), an Irish born botanist who emigrated to North America, became Governor of Pennsylvania and wrote a book on the sexuality of plants. Nuda from the Latin 'nudus' meaning bare, naked; referring to its reduced leaves making the plant appear leaf-less or naked.

Distribution and status

Found in the central part of South Australia, along a east-west line from the Nullarbor to the Murrayland, growing in mallee communities on sandy soils. Also found in Western Australia (under the new genus Orianthera), New South Wales and Victoria. Native. Common in South Australia. Rare in Victoria. Common in the other states.
Herbarium regions: Nullarbor, Gairdner-Torrens, Eyre Peninsula, Murray
NRM regions: Alinytjara Wilurara, South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)

Plant description

Erect undershrub with rush-like stems to 1 m high, with many and opposite branches and striated stems, often ending in a weak spine, glabrous or minutely hairy. Leaves reduced to triangular scales, to 2 mm long. Inflorescence clustered in leaf axils with 1–3 hairy white, bisexual flowers. Flowering between October and February. Fruits are brown ovoid capsule to 5.5 mm long and 5-3 mm wide. Seeds are black convex seed, with a reticulated surface. Seed embryo type is linear under-developed.

Seed collection and propagation

Collect seeds between December and March. Collect maturing capsules, those that are fat, turning brown in colour, have not open and contain hard black seeds. Place the capsules in a tray and leave to dry for one to two weeks for it to split. Then rub the capsules gently 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. From one collection, the seed viability was high, at 90%.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

1,000 (0.73 g)
7-Dec-2005DJD297
Eyre Peninsula
BGA1,100 (0.79 g)309-Dec-2005DJD319
Eyre Peninsula
9-Aug-200690%-18°C
BGA15 (0.06 g)66-Dec-2005DJD290
Eyre Peninsula
9-Aug-2006N/C-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.