Seeds of South Australia
Utricularia dichotoma (Lentibulariaceae)
Fairies Apron
List of species for Utricularia
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Seed collecting:
May, October 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
 Rare   (IUCN: RA d(i,ii))
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(ii))
Lucindale (NCP03) 
 Near Threatened   [declining above Lucindale]
Tintinara (NCP04) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [edge of range]
Kangaroo Island (KAN01)Kanmantoo
 Rare   (IUCN: RA d(ii))
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(ii))   [undercollected; in Glen Shera; mostly in reserves]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B1ab(i))   (Probable Decline)
Northern Flinders (FLB05) 
 Data Deficient   [imprecise location]
Lowan Mallee (MDD04)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)   [water needed]
Wimmera (MDD05) 
 Data Deficient   [doubtful record]
Murnpeowie (STP03)Stony Plains
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [stock, water quality - threats]
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. Dichotoma from the Greek 'dichotomia' meaning divided in two or forked; referring to paired flowers.
Found on Kangaroo Island, southern Mount Lofty Ranges and the South-east in South Australia, growing in damp or wet heathy habitats. Also found in all States except the Northern Territory.
Native. Rare in South Australia. Rare in Western Australia. Common in the other states.
Plant description:
Tiny terrestrial, perennial herb. Leaves rosetted and on stolons, narrow-linear to broad-elliptic, to 140 mm long and 5 mm wide. Inflorescence 1 to several, erect spike to 50 cm long with 1–9 dark violet flowers, upper lip circular to obovate, rounded or emarginate, lower lip much larger, variable, obtrullate to almost circular, with 2 or more conspicuous yellow central ridges flanked by several less conspicuous violet ridges. Flowering between October and December but can be spasmodically throughout the year.
Fruit type:
Reddish brown globular capsule to 5 mm diameter.
Seed type:
Tiny brown ovoid seed to 0.6 mm long and 0.4 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 is high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
BGA5100 (0.16 g)50+1-Oct-2007DJD897
Lake Eyre
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.