Seeds of South Australia
Gilesia biniflora (Sterculiaceae)
Western Tar-vine
List of species for Gilesia
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Seed collecting:
September to January
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Eastern, Eyre Peninsula, Murray
NRM regions:
Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Northern Flinders (FLB05)Flinders Lofty Block
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Central Flinders (FLB06) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Gawler Lakes (GAW03)Gawler
 Rare   (IUCN: RA d(i,ii))   [ephemeral]
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))   [ephemeral]
Torrens (GAW06) 
 Rare   (IUCN: RA d(ii))   [ephemeral, comes up after floods, undercollected]
Roxby (GAW07) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))   [ephemeral]
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Least Concern   [ephemeral, comes up after floods, undercollected]
Oodnadatta (STP02)Stony Plains
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Murnpeowie (STP03) 
 Least Concern   [ephemeral, comes up after floods, undercollected]
Macumba (STP05) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Witjira (STP06) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Baltana (STP07) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened   [ephemeral, comes up after floods, undercollected]
Coongie (CHC06) 
 Near Threatened   [ephemeral, comes up after floods, undercollected]
IBRA regions
DISPLAY ALL
2 of 6 subregionsFlinders Lofty BlockNear Threatened
4 of 8 subregionsGawlerNear Threatened
, Rare
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(i,ii))   [ephemeral]
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsLeast Concern
  [ephemeral, comes up after floods, undercollected]
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
2 of 4 subregionsChannel CountryNear Threatened
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 Gilesia]
Name derivation:
Gilesia named after William Ernest Powell Giles (1835-1897), an Australian explorer who led five major expeditions in central Australia. Biniflora from the Latin 'bi' meaning two and 'flora' meaning flower; referring to the flowers usually occurring in pairs.
Distribution:
Found scattered across the northern part of South Australia, growing on saline clay soils. Also found in the Northern Territory, Queensland and New South Wales.
Status:
Native. Uncommon in South Australia. Rare in Queensland and New South Wales. Uncommon in the Northern Territory.
Plant description:

Small prostrate subshrub covered in glandular and stellate hairs and stems to 25 cm long. Leaves oblong to lanceolate, to 40 mm long and 10 mm wide, glabrous to sparsely stellate-hairy on lower surface, margins coarsely toothed to crenate. Flowers axillary, usually paired with white flowers. Flowering between July and October.

Fruit type:
Brown oblong apsule to 6 mm long, covered in stellate hair, separating into 5 valves.
Seed type:
Orange reniform seed to 1 mm long and 0.5 mm wide.
Seed collecting:
Collect mature capsules, those turning brown and fat, opened or unopened, either individually or break off stems with many capsules.
Seed cleaning:
Place the capsules in a tray and cover with paper to prevent seeds being lost when explosively 'popping' out. Leave to dry for at least a week. Rub the dried capsules by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Store the seeds with a dessicant such as dried silica beads or dry rice in an air tight container in a cool and dry place.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
19500 (5.08 g)
19500 (5.08 g)
50+11-Mar-2007RJB70963
Gairdner-Torrens
1-Aug-2007100%+5°C, -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.