Seeds of South Australia
Cynanchum floribundum (Asclepiadaceae)
Native Pear
List of species for Cynanchum
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Seed collecting:
August to November
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges
NRM regions:
Alinytjara Wilurara, Northern and Yorke, South Australian Arid Lands
IBRA regions
Southern Flinders (FLB04)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   [limit of range, in dry areas]
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Kingoonya (GAW05)Gawler
 Rare   (IUCN: RA d(i,ii))
Torrens (GAW06) 
 Near Threatened
Maralinga (GVD03)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Least Concern
Dieri (SSD03) 
 Least Concern
Strzelecki Desert (SSD05) 
 Least Concern
Murnpeowie (STP03)Stony Plains
 Least Concern
Macumba (STP05) 
 Near Threatened
Witjira (STP06) 
 Near Threatened
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Diamantina-Eyre (CHC04) 
 Least Concern
Coongie (CHC06) 
 Least Concern
Lake Pure (CHC07) 
 Least Concern
IBRA regions
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
2 of 8 subregionsGawlerNear Threatened
, Rare
Maralinga (GVD03)Great Victoria DesertRare
  (IUCN: RA d(i,ii))
3 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
3 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
4 of 4 subregionsChannel CountryLeast Concern
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. Floribundum from the Latin 'flora' meaning flower and 'bundum' meaning plenty.
Found in the north-eastern part of South Australia, growing on sandy soils, along drainage lines and dunes. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Native. Common in South Australia. Uncommon in New South Wales. Common in the other states.
Plant description:
Shrubs with twining branches to 1 m high, new growth pubescent. Leaves ovate to narrow-lanceolate, to 90 mm long and 30 mm wide, apex long-acuminate, base cuneate to cordate, glabrous, mostly with 2 basal glands, petiole to 30 mm long. Inflorescence axillary or terminal with 2-12 creamy above, greenish to purplish below flowers. Flowering and fruiting between March and November.
Fruit type:
Pale brown ovoid capsule to 5 cm long, pubescent, thin-walled, splitting into two.
Seed type:
Brown ovoid seed to 6 mm long and 4 mm wide with long dense 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.