Plants of
South Australia
Drosera macrantha ssp. planchonii
Droseraceae
Climbing Sundew
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
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Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Etymology

Drosera from the Greek 'droseros' meaning dewy; alluding to the glistening of the glandular leaf laminae. Macrantha from the Greek 'macros' meaning large and 'anthos' meaning flower. Planchonii named after Jules Émile Planchon (1823-1888), a French botanist born in Ganges, Hérault.

Distribution and status

Found in the southern part of South Australia, from the Flinders Ranges, Eyre Peninsula to the lower South-east, growing in a wide variety of habitats. Also found in Victoria and Tasmania. Native. Common in South Australia. Uncommon in Tasmania. Common in Victoria.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Perennial herb with an erect rhizome arising from a globular tuber with stems to 60 cm long, simple, slender, leafy, trailing, scrambling or climbing. Lower leaves few, reduced and scale-like, alternate, upper leaves paired or in false whorls of 3 or 4, lamina orbicular-peltate, to 7 mm in diameter, deeply concave, inverted. Inflorescence a terminal raceme or panicle with 2 to several-flowers. Sepals 5, blackish, to 8 mm long, broad-elliptical or ovate, pilose, the hairs appressed, septate, glandular, margins ciliate below. Petals 5, white or pale pink, to 10 mm long, obovate. Flowering between July and October. Fruits are brown globose capsule to 8 mm diameter, nodding, enclosed in persistent sepals. Seeds are black dumbbell-shape seed to 3 mm long and 0.5 mm wide.

Seed collection and propagation

Collect seeds between September and November. Collect mature capsules, those that are fat, hard, turning brown and contain black seeds inside. 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. From one collection, the seed viability was high, at 100%.

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
11,000 (1.02 g)
11,000 (1.02 g)
100+16-Oct-2005DJD146
Southern Lofty
1-Aug-2006100%-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.