Seeds of South Australia
Eucalyptus gillii (Myrtaceae)
Curly Mallee
List of species for Eucalyptus
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Seed collecting:
January to December
Herbarium regions:
Lake Eyre, Flinders Ranges, Eastern
NRM region:
South Australian Arid Lands
IBRA regions
Broughton (FLB02)Flinders Lofty Block
 Critically Endangered   (IUCN: CR D)   [dubious record]
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [grazing by goats a threat]
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))   [limited habitat ]
Curnamona (BHC06)Broken Hill Complex
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [grazing by goats a threat]
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 Eucalyptus]
Name derivation:
Eucalyptus from the Greek 'eu' meaning well and 'calyptos' meaning covered; alluding to the cap or lid which covers the stamens in the bud. Gillii named after Walter W. Gill (1851-1929), a Conservator of Forests in South Australia who collected the type specimen and sent it J.H. Maiden, who named the species.
Distribution:
Found mainly in the northern Flinders Ranges with scattered populations south around Yunta in South Australia, growing in open mallee in gullies, slopes and ridges of undulating hills on calcareous shallow grey loams and gravelly red loams over limestone and slate. Also foun din New South Wales.
Status:
Native. Uncommon in South Australia. Rare in New South Wales.
Plant description:
Multi-stemmed mallee to 8 m high with crooked stems and bark smooth and waxy, yellowish or reddish to pale-grey, often rough and fissured or in coarse flakes below. Juvenile leaves sessile, very waxy, ovate, dull greyish. Mature crown consist of juvenile leaves that are opposite, sessile or with short stalk, orbicular to ovate, to 61 mm long ang 45 mm wide, waxy, dull, greyish. Flowers in groups of 7-9 in the axils. Buds to 18 mm long and 5 mm wide, smooth, dull and waxy, bud-cap horn-shaped longer than the base. Flowers pale creamy-yellow. Flowering between August and January.
Fruit type:
Round to barrel-shaped fruit to 9 mm long and 8.5 mm wide, waxy at first, disc descending, valves 3 to 4, fragile, needle-like, protruding well beyond the rim.
Seed type:
Dark brown ovoid seed to 2.5 mm long and 2 mm wide.
Embryo type:
Folded.
Seed collecting:
Collect mature fruits that are dark and hard (difficult to break with a finger nail), with the valves un-open any time of year.
Seed cleaning:
Leave the fruits in a breathable container in a dry room for one to two weeks. This allows the valves on the fruit to open and release the seeds. Separate the seeds by placing all the materials into a bucket and shaking it to dislodge the seeds. Pass the material through a sieve to separate the unwanted material. The finer material will contain both seeds (soft) and frass (hard) usually distinguishable from each other but can be very similar in shape and colour. With finer sieves, the seeds can be separated from the frass but this is not essential for storage or propagation. 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 70% to 95%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
7250 (6.93 g)
7250 (6.93 g)
30-4024-Nov-2005DJD239
Flinders Ranges
8-Aug-200695%-18°C
BGA7000 (6.13 g)50+KHB700
Flinders Ranges
24-Mar-201570%-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
August 2014100%7d14d None
1% water agar
12 hrs  /  20 °C C constant
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)