Seeds of South Australia
Leptorhynchos waitzia (Compositae)
Button Immortelle
List of species for Leptorhynchos
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Seed collecting:
October to November
Herbarium regions:
Nullarbor, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Kangaroo Island
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [limited habitat]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Data Deficient   [1 very old record, questionable location]
Broughton (FLB02) 
 Data Deficient   [Ephemeral. May be undercollected]
Southern Flinders (FLB04) 
 Data Deficient   [Ephemeral. May be undercollected]
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [northern edge of range; weeds & climate change - threats]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [northern edge of range; weeds & climate change - threats]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern   [salt flats]
St Vincent (EYB02) 
 Rare   (IUCN: RA d(i))   (Definite Decline)
Eyre Hills (EYB03) 
 Least Concern   [often occurs in large numbers]
Talia (EYB04) 
 Least Concern   [often occurs in large numbers]
Eyre Mallee (EYB05) 
 Least Concern   [often occurs in large numbers]
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [old record]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA b)   (Probable Decline)
Braemer (MDD07) 
 Data Deficient
Murray Scroll Belt (RIV06)Riverina
 Data Deficient   [old record]
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) 
 Rare   (IUCN: RA d(ii))
Nullarbor Plain (NUL02)Nullarbor
 Rare   (IUCN: RA d(ii))
Yalata (NUL03) 
 Least Concern   [often occurs in large numbers]
IBRA regions
DISPLAY ALL
Kangaroo Island (KAN01)KanmantooVulnerable
  (IUCN: VU D2)   [limited habitat]
5 of 6 subregionsFlinders Lofty BlockRare
, Data Deficient
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Rare
3 of 6 subregionsMurray Darling DepressionRare
, Data Deficient
Murray Scroll Belt (RIV06)RiverinaData Deficient
  [old record]
4 of 8 subregionsGawlerRare
2 of 3 subregionsNullarborLeast Concern
, Rare
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 Leptorhynchos]
Name derivation:
Leptorhynchos from the Greek 'leptos' meaning slender and 'rhynchos' meaning a snout; alluding to the beaked achenes of some species. Waitzia named after Karl Friedrich Waitz (1774–1848), a privy councillor of the Duchy of Saxe-Altenburg.
Distribution:
Found across the southern part of South Australia except in the South-east, growing in open sites, often on seasonally inundated flats, with loamy soils or in coastal situations in calcareous sand or on salt flats. Also found in New South Wales and Victoria.
Status:
Native. Common in South Australia. Very rare in New South Wales. Common in Victoria.
Plant description:
Annual herb to 20 cm high, branching mostly from base with ascending, white-cottony stems. Leaves narrow-oblanceolate, to 4.5 cm long and 4 mm wide, reducing slightly to just below capitulum, acute, upper surface scabrous with coarse hairs, sometimes cottony, lower surface hairy or cottony, margins recurved. Flower-heads broadly campanulate, to 1.5 cm diameter; outer involucral bracts ovate with rounded apices, almost transparent, or with straw-coloured flecks or streaks, minutely glandular, margins shortly ciliate; inner bracts linear, mostly herbaceous, glandular, with scarious, acute or subacute, ciliate tips; florets yellow. Flowering between september and October.
Fruit type:
White fluffy daisy-head.
Seed type:
Brown ovoid seed to 4 mm long and 1 mm wide, covered in barbs and with short feathered-like papus at one end.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect heads that are fluffy. Either pick off the whole heads or use your finger and pull off the seeds from the head. Mature seeds will come off easily.
Seed cleaning:
Place the heads in a tray for a week to dry. No cleaning is required if only pure seeds are collected. If heads are collected, then rub the heads gently with your hands to dislodge the seeds. Viable seeds will be fat and hard. 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 two collections, the seed viability were average to high, ranging from 50% to 95%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
5000 (0.94 g)
5000 (0.94 g)
100+17-Oct-2006DJD600
Yorke Peninsula
1-Aug-200750%-18°C
BGA4800 (0.77 g)100+11-Nov-2009DJD1616
Yorke Peninsula
Jun-201095%-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.