Seeds of South Australia
Orobanche cernua var. australiana (Orobanchaceae)
Australian broomrape
List of species for Orobanche
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Seed collecting:
September to December
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray, Yorke Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Fleurieu (KAN02)Kanmantoo
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [on coastal dunes; parasitises usually perennial daisies, often Senecios; depends on hosts; Cape Jervis < 15 plants]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [on coastal dunes; parasitises usually perennial daisies, often Senecios; depends on hosts; 1 location at Pt Noarlunga]
Broughton (FLB02) 
 Critically Endangered   (IUCN: CR C2a(i))   (Definite Decline)   [saltbush plains]
Olary Spur (FLB03) 
 Vulnerable   (IUCN: VU C2a(i))   (Probable Decline)
Northern Flinders (FLB05) 
 Near Threatened   [parasitic sp; in dry sandy creek beds]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   [parasitic sp; in dry sandy creek beds]
Southern Yorke (EYB01)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [sandy soils, needs host often a daisy, very obvious]
St Vincent (EYB02) 
 Critically Endangered   (IUCN: CR C2a(i))   (Definite Decline)
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(i,ii))
Talia (EYB04) 
 Rare   (IUCN: RA d(i,ii))
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(i,ii))
Murray Mallee (MDD02)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)   [could be eradicated because the weedy spp occurs here]
Murray Scroll Belt (RIV06)Riverina
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(i,ii))
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))
Torrens (GAW06) 
 Rare   (IUCN: RA d(i,ii))   [parasitic sp; in dry sandy creek beds]
Barrier Range (BHC01)Broken Hill Complex
 Vulnerable   (IUCN: VU C2a(i))   (Probable Decline)
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened   [parasitic sp; in dry sandy creek beds]
Murnpeowie (STP03)Stony Plains
 Least Concern   [parasitic sp; in dry sandy creek beds]
IBRA regions
DISPLAY ALL
Fleurieu (KAN02)KanmantooEndangered
  (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [on coastal dunes; parasitises usually perennial daisies, often Senecios; depends on hosts; Cape Jervis < 15 plants]
5 of 6 subregionsFlinders Lofty BlockNear Threatened
, Rare
, Vulnerable
, Endangered
, Critically Endangered
5 of 5 subregionsEyre Yorke BlockRare
, Critically Endangered
Murray Mallee (MDD02)Murray Darling DepressionVulnerable
  (IUCN: VU D2)   [could be eradicated because the weedy spp occurs here]
Murray Scroll Belt (RIV06)RiverinaVulnerable
  (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
4 of 8 subregionsGawlerRare
Barrier Range (BHC01)Broken Hill ComplexVulnerable
  (IUCN: VU C2a(i))   (Probable Decline)
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsNear Threatened
  [parasitic sp; in dry sandy creek beds]
Murnpeowie (STP03)Stony PlainsLeast Concern
  [parasitic sp; in dry sandy creek beds]
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 Orobanche]
Name derivation:
Orobanche from the Greek 'orobos' meaning vetch and 'ancho' meaning to strangle; referring to the parasitic characteristics of this plant. Cernua means nodding; possibly referring to the habit of the flower, ascending at first and then decurved. Australiana from the Latin 'australis' meaning southern; alluding to the variety distribution in the southern part of Australia.
Distribution:
Found scattered across the eastern half of South Australia, growing in sand dunes and sandy creek beds, parasitic on native Senecio species. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Rare in the other states.
Plant description:
An erect brown herb to 50cm tall, parasiticing to species of Senecio. The early stage is similar to a young asparagus. Flowers are purple and tubular along the stems appearing in spring.
Fruit type:
Brown papery capsules along the stem containing numerous fine seeds.
Seed type:
Very fine brown seeds less than 0.5 mm long with a net-like mesh pattern on the outside.
Seed collecting:
Carefully break off the stems with the developed capsules, those turning brown and place it in a paper bag to prevent the seeds falling out.
Seed cleaning:
Place the stems in a tray and cover with some paper and leave to dry for at least a week. Then shake the stems carefully in a tray to dislodge the fine seeds from the capsules. 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 two collections, the seed viability were high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA37300 (0.46 g)17-Sep-2006DM5391
Yorke Peninsula
1-Aug-2007100%+5°C, -18°C
BGA 
MSB
200000 (2.6 g)
200000 (2.6 g)
50+18-Nov-2006DJD603
Yorke Peninsula
1-Aug-2007100%+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.