Seeds of South Australia
Eutaxia microphylla (Leguminosae)
Common Eutaxia
List of species for Eutaxia
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Seed collecting:
November to February
Herbarium regions:
Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Near Threatened
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(ii))   [likely to be in Penola Forest]
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Least Concern
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(i))
Southern Flinders (FLB04) 
 Least Concern
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
St Vincent (EYB02) 
 Least Concern
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern
Murray Mallee (MDD02) 
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(ii))
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Least Concern
Murray Scroll Belt (RIV06)Riverina
 Near Threatened   [grazed but regenerates]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria Desert
 Least Concern
Nullarbor Plain (NUL02)Nullarbor
 Rare   (IUCN: RA d(i,ii))
Yalata (NUL03) 
 Least Concern
Hampton (HAM01)Hampton
 Rare   (IUCN: RA d(i,ii))
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Near Threatened
, Rare
2 of 2 subregionsKanmantooLeast Concern
6 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
5 of 5 subregionsEyre Yorke BlockLeast Concern
5 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
Murray Scroll Belt (RIV06)RiverinaNear Threatened
  [grazed but regenerates]
3 of 8 subregionsGawlerLeast Concern
, Rare
Yellabinna (GVD06)Great Victoria DesertLeast Concern
2 of 3 subregionsNullarborLeast Concern
, Rare
Hampton (HAM01)HamptonRare
  (IUCN: RA d(i,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 Eutaxia]
Name derivation:
Eutaxia from the Greek 'eu' meaning well and 'taxis' meaning arrangement in row; referring to the regular arrangement of leaves. Microphylla from the Greek 'micros' meaning small and 'phyllon' meaning leaf; referring to the small leaves of the species.
Distribution:
Found across the southern part of South Australia, growing in mallee, heath and woodland communities. also found in New South Wales, Victoria and Tasmania.
Status:
Native. Common in South Australia. Uncommon in Tasmania. Common in the other states.
Plant description:
Variable shrub, often low dense and intricate or erect, stems usually glabrous. Leaves opposite, linear to linear-oblong, to 2.5 mm long and 1mm wide, glabrous. Flowers axillary, single or paired, 6-10 mm long, yellow, purple to red. Flowering between August and November.
Fruit type:
Brown obovoid pod to 5 mm long, very swollen.
Seed type:
Brown to black reniform seed to 2 mm long and 1.5 mm wide, dull, with the aril off-centre.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods, those brown or turning brown and contain hard black seeds inside.
Seed cleaning:
Place the pods in a paper bag and leave to dry for one to two weeks. Then rub the pods with a rubber bung to dislodge the seeds. 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 75% to 95%.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate. The seed coat needs to be ruptured so that water can enter the seed before germination can occur. Methods to rupture the seed coat include scarification with sand paper or nicking the seed coat with a sharp blade or hot water treatment by immersion in boiling water.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
2170 (3.96 g)
2350 (4.29 g)
1116-Nov-2004DJD 36
Southern Lofty
31-Mar-200695%-18°C
BGA2865 (4.87 g)502-Dec-2004DJD 60
South Eastern
31-Mar-200675%-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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
March 201596%7d7d None
1% water agar
Incubated under spring/autumn conditions
March 201588%7d7d seed coat nicked
1% water agar
Incubated under winter conditions
March 20156%21dNA None
1% water agar
Incubated under spring/autumn conditions
March 20154%14dNA None
1% water agar
Incubated under winter conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)