Seeds of South Australia
Dodonaea procumbens (Sapindaceae)
Trailing hop-bush
List of species for Dodonaea
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Seed collecting:
November to January
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Kangaroo Island, South Eastern
NRM regions:
Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Critically Endangered   (IUCN: CR D)   [D Duval has recently seen 12 plants only]
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [1 record 1987; disjunct pop; could be gone: checked P Lang]
Broughton (FLB02)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(ii,iii))   (Probable Decline)   [weeds are a threat, hybridisation a problem]
Eyre Hills (EYB03)Eyre Yorke Block
 Critically Endangered   (IUCN: CR B2ab(i,ii,iii); D)   (Probable Decline)
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. Procumbens from Latin meaning to lie along the ground; referring to the species habit.
Distribution:
Found in the northern Mount Lofty Ranges and the lower South-East in South Australia, growing in low-lying areas that are seasonally inundated in winter, in grasslands and open woodlands on cracking grey clay and sandy soils. Also found in New South Wales and Victoria.
Status:
Native. Rare in South Australia. Rare in the other states.
Plant description:
Small dioecious prostrate shrub to 20 cm tall. Leaves simple, sessile, angular-obovate to oblanceolate to 3 cm long and 0.9 cm wide, usually with 1-4 irregular teeth, glabrous or puberulent, sticky and leathery to touch. Flowers are terminal, solitary or paired, with small yellow with orange tip flowers. Flowering between November and February.
Fruit type:
Orange-red capsule with 3- or 4-winged, to 13 mm long and 10.5 mm wide, glabrous.
Seed type:
Black ovoid seed to 5 mm long and 3 mm wide with cream 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 three collections, the seed viability were average to high, ranging from 75% to 100%.
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
2810 (25.3 g)
6500 (58.5 g)
~30DJD 50
Eyre Peninsula
28-Mar-200690%-18°C
BGA3100 (32.18 g)717-Dec-2008KHB192
Northern Lofty
20-Jul-2009100%-18°C
BGA720 (5.76 g)126-Dec-2012DJD2607
South Eastern
27-Feb-201475%-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 200793%15d21d Stored at -18°C for 1 year and then seed coat nicked.
Wet filter paper placed over wettex sponge.
Incubated under spring/autumn conditions
July 200580%7d17d Seed coat nicked
Wet filter paper placed over wettex sponge.
Incubated under spring/autumn 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)