Seeds of South Australia
Dodonaea baueri (Sapindaceae)
Crinkled Hop-bush
List of species for Dodonaea
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Seed collecting:
December to April
Herbarium regions:
Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened   [on roadsides; restricted to eastern plains; locally common]
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [poor roadside management leading to decline; limestone/mallee; edge of range]
Broughton (FLB02)Flinders Lofty Block
 Least Concern
Olary Spur (FLB03) 
 Least Concern
Southern Flinders (FLB04) 
 Least Concern
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Southern Yorke (EYB01)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [mallee species]
St Vincent (EYB02) 
 Least Concern
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))   [edge of range]
IBRA regions
DISPLAY ALL
2 of 2 subregionsKanmantooNear Threatened
, Rare
5 of 6 subregionsFlinders Lofty BlockLeast Concern
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Rare
2 of 6 subregionsMurray Darling DepressionRare
4 of 8 subregionsGawlerLeast Concern
, Rare
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))   [edge of range]
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 Dodonaea]
Name derivation:
Dodonaea named after Rembert Dodoens (1517-1585), a Flemish physician and botanist, also known under his Latinized name Rembertus Dodonaeus. Baueri named after Ferdinand Lucas Bauer (1760-1826), an Austrian botanical illustrator who travelled on Matthew Flinders' expedition to Australia.
Distribution:
Endemic to South Australia and found in the southern part of South Australia, from the Gammon Ranges to the Fleurieu Peninsula, growing on rocky hillsides and exposed sites on mountain ridges and in red-brown sandy loams in mallee scrub.
Status:
Native. Common in South Australia.
Plant description:
Dioecious spreading or sometimes prostrate shrub to 1 m high. Leaves simple, petiolate, obovate, rarely broad-oblong or orbicular, truncate or rounded and irregularly 3- rarely 6-toothed at the apex, to 1.8 cm long and 1 cm wide, viscous, with flat glands, glabrous to sparsely puberulent, margin slightly recurved, undulate, unevenly dentate or repand. Flowers solitary or rarely 2 together, axillary, with small yellow with red tip flowers. Flowering between December and March.
Fruit type:
Red-brown capsule with 3-5-angled to 10 mm long and 5 mm wide.
Seed type:
Black ovoid seed to 2.5 mm long and 2 mm wide with orange aril.
Embryo type:
Folded.
Seed collecting:
Collect capsules that contain hard black seeds, usually when capsule is turning red or brown.
Seed cleaning:
Place capsules in a tray and leave to dry for 1 to 2 weeks. Then rub the capsules by hand 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 one collection, the seed viability was low, at 45%.
Seed germination:
This species has physiological dormancy that needs to be overcome for the seed to germinate (e.g. nicking the seed coat).
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
13200
13200
3722-Dec-2003PJA 74
Southern Lofty
1-Sep-200445%+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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
July 200428%11dNA Boiling hot water treatment (Start temperature 90ºC) for 10min. Then seed sterilised with 20% Hydrogen Peroxide with 5 drops of Tween (10min). Rinsed in sterile water.
Wet filter paper placed over wettex sponge. Irrigated with RO water
10/14 dark/light  /  10°C/18°C
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)