Seeds of South Australia
Utricularia lateriflora (Lentibulariaceae)
Tiny Bladderwort
List of species for Utricularia
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Seed collecting:
November to February
Herbarium regions:
Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)   [T Horn has more records]
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)
Fleurieu (KAN02) 
 Endangered   (IUCN: EN B2ab(i,ii,iii); D)   (Probable Decline)   [only 1 or 2 plants in a few locations known]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Critically Endangered   (IUCN: CR B2ab(i,ii,iii); D)   (Probable Decline)   [J Quarmby: has been searched for, could be extinct]
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. Lateriflora from the Latin 'latus' meaning side and 'florus' meaning flower; referring to the species having lateral flowers. Due to the short pedicels the flowers appear to be fastened directly to the peduncle axis.
Distribution:
Found on Kangaroo Island, the southern Mount Lofty ranges and the lower South-east in South Australia, growing in heathland on wet, sandy or peaty soils. Also found in Queensland, New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Tiny terrestrial herb usually only observed when flowering. Leaves inconspicuous, scarcely emerging above the ground, very narrowly obovate to 20 mm long and 0.5 mm wide. Inflorescence erect, solitary or sometimes with 2 or more reddish stalk, with up to 5 pale lilac to mauve or violet with white or yellow spot at base of lower lip flowers. Flowering between October to January.
Fruit type:
Reddish brown globular capsule to 3 mm diameter, splitting into two.
Seed type:
Tiny brown ovoid seed to 0.3 mm long and 0.2 mm wide.
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)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA3600 (0.06 g)16-Dec-2008DJD1432
Kangaroo Island
20-Jul-2009100%-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.