Seeds of South Australia
Rhyncharrhena linearis (Asclepiadaceae)
Climbing Purple-star
List of species for Rhyncharrhena
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Seed collecting:
October to March
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Fleurieu (KAN02)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [outlier; sth edge of range]
Broughton (FLB02)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(ii))
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(ii))
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(ii))
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))
South Olary Plain (MDD01)Murray Darling Depression
 Near Threatened
Braemer (MDD07) 
 Rare   (IUCN: RA d(ii))
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(i,ii))   [no records, undercollected]
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(i,ii))
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))
Roxby (GAW07) 
 Rare   (IUCN: RA d(ii))
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Near Threatened
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern
Carlisle (NUL01)Nullarbor
 Least Concern
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(ii))
Murnpeowie (STP03) 
 Rare   (IUCN: RA d(i,ii))
Witjira (STP06) 
 Rare   (IUCN: RA d(ii))
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Near Threatened
Everard Block (CER03) 
 Least Concern
Tieyon (FIN03)Finke
 Near Threatened
Pedirka (FIN04) 
 Near Threatened
IBRA regions
DISPLAY ALL
Fleurieu (KAN02)KanmantooVulnerable
  (IUCN: VU D2)   [outlier; sth edge of range]
5 of 6 subregionsFlinders Lofty BlockRare
2 of 6 subregionsMurray Darling DepressionNear Threatened
, Rare
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(i,ii))   [no records, undercollected]
7 of 8 subregionsGawlerLeast Concern
, Rare
4 of 4 subregionsGreat Victoria DesertLeast Concern
, Near Threatened
Carlisle (NUL01)NullarborLeast Concern
3 of 7 subregionsStony PlainsRare
3 of 3 subregionsCentral RangesLeast Concern
, Near Threatened
2 of 2 subregionsFinkeNear 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 Rhyncharrhena]
Name derivation:
Rhyncharrhena from the Greek 'rhynchos' meaning a beak and 'arrhen' meaning male; alluding to the inner coronal appendages. Linearis from Latin meaning linear; reference to the shape of the leaves of this species.
Distribution:
Found scattered across the drier parts of South Australia, growing on stony soils and red sand. Also found in all mainland states.
Status:
Native. Common in South Australia. Rare in Victoria. Common in the other states.
Plant description:
Slender climber or trailer with stems to 2 m long. Stems finely ribbed, young growth with woolly hairs. Leaves opposite, narrow-linear, to 10 cm long and 5 mm wide, margins thickened and usually revolute, both surfaces more or less glabrous. Inflorescences axillary in umbels of 3–7 greenish-yellow becoming purple flowers. Pedicels with 6 linear pubescent bracts at the base, calyx almost glabrous, sepals lanceolate, glabrous, corolla ovate to narrow-ovate, lobes deeply incised, greenish-yellow becoming purple, outer corona a 5-lobed disk, inner corona of 5 laterally compressed segments, tube to 5 mm long. Flowering between July and January.
Fruit type:
Long, green slender bean-like capsule turning yellow-brown upon dehiscing, to 18 cm long.
Seed type:
Brown, semi-flat oblong seed to 10 mm long and 3 mm wide, with long white pappus at one end.
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.