Seeds of South Australia
Gonocarpus mezianus (Haloragaceae)
Hairy Raspwort
List of species for Gonocarpus
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Seed collecting:
October to March
Herbarium regions:
Eyre Peninsula, Northern Lofty, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South East
IBRA regions
SUMMARY
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU D2)
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU D2)   [no records - T Horn has records]
Lucindale (NCP03) 
 Rare   (IUCN: RA d(ii))
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Least Concern
Southern Flinders (FLB04) 
 Vulnerable   (IUCN: VU D1+2)   [Mt Brown ]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
St Vincent (EYB02) 
 Rare   (IUCN: RA d(i))
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [edge of range]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))
IBRA regions
DISPLAY ALL
Mount Gambier (SVP02)Southern Volcanic PlainVulnerable
  (IUCN: VU D2)
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
, Vulnerable
2 of 2 subregionsKanmantooLeast Concern
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Vulnerable
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Rare
3 of 6 subregionsMurray Darling DepressionRare
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. Mezianus named after Prof. Carl Christian Mez (1866-1944), a German botanist at Breslau, Halle, Königsberg (1910–1935 director of the Botanical Garden) and finally Freiburg.
Distribution:
Found in the southern part of South Australia, growing on dry rocky soils, often with Gonocarpus elatus, with which it sometimes hybridises. Also found in Victoria.
Status:
Native. Common in South Australia. Rare in Victoria.
Plant description:
Erect or ascending perennial herb to 30 cm tall with strongly 4-angled, hairy stems. Leaves opposite becoming alternate above, subsessile, broadly ovate to cordate, to 17 mm long and 15 mm wide, margin thickened, with 8-12 coarse teeth. Inflorescence a leafy-spike at terminal of stems with numerous red flowers. Flowering between August to February.
Fruit type:
Small silver-grey to purplish ovoid fruit to 1.3 mm long and 1 mm wide, with 8-ribbed and 2-3 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 low, at 20%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
8500 (3.1 g)
8500 (3.1 g)
40-5030-Nov-2005DJD266
South Eastern
1-Aug-200620%-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.