Seeds of South Australia
Gonocarpus humilis (Haloragaceae)
Shade Raspwort
List of species for Gonocarpus
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Seed collecting:
November to February
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Near Threatened   [likes acid soils in swamps; stronghold]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [likes acid soils in swamps]
Glenelg Plain (NCP02) 
 Least Concern   [Troy has more records]
Lucindale (NCP03) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range]
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 Gonocarpus]
Name derivation:
Gonocarpus from the Greek 'gonia' meaning angle, corner and 'carpos' meaning fruit; referring to its ribbed fruits. Humilis means dwarf, small; referring to the small habit, compared to the other species. 
Distribution:
Found in the lower South-east in South Australia, growing in cool, damp places. Also found in Queensland, New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Prostrate or semi-prostrate perennial herb to 30 cm high with weakly 4-ribbed, hairy stems to 70 cm long. Leaves decussate, opposite, ovate, to 20 mm long and 12 mm wide, densely hair, short stalk and toothed margin. Inflorescence a leafy-spike at terminal of stems with numerous yellow-green flowers. Flowering between October and December.
Fruit type:
Small silver-grey to purplish ovoid fruit to 1.5 mm long and 1 mm wide, with 8-ribbed and 3 calluses between the ribs, scabrous surface.
Seed type:
Considered the same as the fruit.
Seed collecting:
Collect maturing fruits, those that are fat and turning grey-purple, by running your hands along the fruit-spikes.
Seed cleaning:
Place the fruit in a tray and leave to dry for 1 to 2 weeks. No further cleaning is required if only fruits were collected. If collected with other material, 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 average, at 80%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
4500 (2.08 g)
4500 (2.08 g)
1023-Nov-2007RJB75899
South Eastern
19-Sep-200880%+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.