Seeds of South Australia
Cynanchum viminale ssp. australe (Asclepiadaceae)
Caustic Vine
List of species for Cynanchum
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Seed collecting:
December to April
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Fleurieu (KAN02)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [cliff edges, only 2 known pops]
Broughton (FLB02)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Near Threatened
St Vincent (EYB02)Eyre Yorke Block
 Critically Endangered   (IUCN: CR D)   (Probable Decline)   [Records in Tickeria]
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(ii))   [southern limit]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))
Braemer (MDD07) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(i,ii))
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))
Arcoona Plateau (GAW04) 
 Least Concern
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))
Torrens (GAW06) 
 Near Threatened
Kintore (GVD04)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06) 
 Rare   (IUCN: RA d(i,ii))
Bimbowrie (BHC05)Broken Hill Complex
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened
Breakaways (STP01)Stony Plains
 Near Threatened
Oodnadatta (STP02) 
 Near Threatened
Murnpeowie (STP03) 
 Near Threatened
Witjira (STP06) 
 Near Threatened
Baltana (STP07) 
 Least Concern
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Near Threatened
Everard Block (CER03) 
 Near Threatened
Tieyon (FIN03)Finke
 Rare   (IUCN: RA d(ii))
IBRA regions
DISPLAY ALL
Fleurieu (KAN02)KanmantooVulnerable
  (IUCN: VU D2)   [cliff edges, only 2 known pops]
5 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
, Rare
2 of 5 subregionsEyre Yorke BlockRare
, Critically Endangered
2 of 6 subregionsMurray Darling DepressionRare
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(i,ii))
6 of 8 subregionsGawlerLeast Concern
, Near Threatened
, Rare
2 of 4 subregionsGreat Victoria DesertRare
Bimbowrie (BHC05)Broken Hill ComplexRare
  (IUCN: RA d(ii))   (Probable Decline)
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsNear Threatened
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
Sturt Stony Desert (CHC02)Channel CountryNear Threatened
3 of 3 subregionsCentral RangesLeast Concern
, Near Threatened
Tieyon (FIN03)FinkeRare
  (IUCN: RA d(ii))
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 Cynanchum]
Name derivation:
Cynanchum from the Greek 'kyon' meaning a dog and 'anchein' meaning to choke; alluding to supposed poisonous properties of some European species. Viminale from the Latin 'vimineus' meaning bearing osiers (a shoot of a willow); alluding to the species having long flexible shoots like the willow. Australis from Latin meaning southern; referring to the species distribution in Australia.
Distribution:
Found across much of South Australia, growing in woodland and scrub, often on rock outcrops and in coastal sites. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Shrub to 2 m high or with prostrate stems longer. Leaves opposite, scale-like. Inflorescence an umbel with 2-10 pale yellow to whitish flowers. Flowers in spring to summer.
Fruit type:
Brown capsule to 14 cm long and 10 mm wide, tapering to a long point, outer surface finely veined, sometimes tuberculate, inner surface smooth, shiny, pale-brown.
Seed type:
Pale-brown, flattened seed to 7 mm long and 4 mm wide, with long silky pappus.
Seed collecting:
Collect fruits that are maturing, fat, hard, turning pale brown and contain fluffy seeds.
Seed cleaning:
Place the fruit in a tray and leave to dry for at least two weeks until it split. Then shake the fruits to release the seeds. No further cleaning is required. 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.