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.
Distribution:
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.
Status:
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)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA5100 (0.16 g)50+1-Oct-2007DJD897
Lake Eyre
19-Sep-2008100%-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.