Plants of
South Australia
Drosera hookeri
Droseraceae
Hooker's Sundew
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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: 3.

Etymology

Drosera from the Greek 'droseros' meaning dewy, alluding to the glistening hairs of the glandular leaf laminae. Hookeri commemorates Joseph Dalton Hooker (1817–1911) who originally recognised this taxon and provided a manuscript name which was used by J.É. Planchon.

Distribution and status

Found scattered across southern South Australia from the southern Flinders Ranges, bottom of Eyre Peninsula to lower South-east growing in seasonally-moist, infertile mineral-based soils in herbfields and low open shrublands. Also found in New South Wales, Victoria and Tasmania. Native. Uncommon in South Australia. Common in the other States.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Small yellowish-green herb forming dense colonies, with a white stem tuber enclosed by multi-layered black sheath. Stem erect, annual; much branched basally, appearing multi-stemmed and shrubby to 12 cm long, glabrou;, lowest leaves 5–10 in a flat rosette; spatulate-flabellate to 11 mm long and 10 mm wide; stem leaves alternate, close spaced; sometimes in clusters of 2–4, broadly crescentic-lunate, to 6 mm long and 5 mm wide. Inflorescence a 1-sided raceme, with 5–10 white flowers. Flowering between August and November. Fruits are brown globose capsule to 6 mm diameter; erect, enclosed in persistent sepals.

Seed collection and propagation

Collect seeds between October and December. 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.

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
2,800 (0.87 g)
2,800 (0.87 g)
703-Dec-2005DJD324
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.