Seeds of South Australia
Utricularia violacea (Lentibulariaceae)
Violet Bladderwort
List of species for Utricularia
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Seed collecting:
November to January
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Lowan Mallee (MDD04)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)   [edge of range; needs water]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Utricularia]
Name derivation:
Utricularia from the Latin 'utriculus' meaning a small bottle or bladder; referring to a small insect trapping sac attached to the underground leaves. Violacea from Latin meaning violet colour; referring to the colour of the flowers.
Found only in the lower South-east in South Australia, growing in wet heaths and swamps. Also found in Western Australia, Victoria and Tasmania.
Native. Rare in South Australia. Rare in Victoria and Tasmania. Common in Western Australia.
Plant description:
Tiny terrestrial annual herb. Leaves numerous, rosetted, narrowly linear-cuneate, to 12 mm long and 0.5 mm wide. Inflorescence 1-4 erect spike to 10 cm long with 1 violet flower each, centre of lower lip pale yellow with 3 dark violet lines, upper lip obovate, bilobed, lower lip much larger, transversely oblong or elliptic. Flowering between October and November.
Fruit type:
Purple brown globular capsule to 2 mm diameter.
Seed type:
Tiny brown ellipsoid seed to 0.4 mm long and 0.2 mm wide, with a thin mesh-like surface.
Seed collecting:
Collect mature capsules, those turning reddish brown colour, fat and containing brown seeds. Can collect individual capsules or break off the whole stem.
Seed cleaning:
Place the capsules in a tray and leave to dry for 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.
Seed viability:
From one collection, the seed viability was high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
BGA15000 (0.08 g)100+17-Nov-2010DJD2024
South Eastern
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.