Seeds of South Australia
Eucalyptus wimmerensis (Myrtaceae)
Wimmera Mallee Box
List of species for Eucalyptus
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Tintinara (NCP04)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   [taxonomic issues]
Wimmera (MDD05)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [crosses with odorata]
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. Wimmerensis named after the Wimmera region of western Victoria, where the species is most common.
Distribution:
Found around Bordertown in the South-east in South Australia, growing on sands or gravelly loams in mallee vegetation or mixed mallee woodland. Also found in Victoria.
Status:
Native. Rare in South Australia. Rare in Victoria.
Plant description:
Multi-stemmed and often erect-stemmed mallee to 12 m tall with rough bark on lower stems only and smooth, grey to tan to cream bark above or smooth throughout. Juvenile leaves narrowly elliptical, dull, blue-green. Adult leaves to 80 mm long and 15 mm wide, linear-lanceolate to narrow-lanceolate, glossy, green. Flowers axillary in groups of 7-11. Buds to 6 mm long and 4 mm wide, bud-cap rounded to bluntly cone-shaped, shorter than the base. Flowers white appearing in summer to autumn.
Fruit type:
Cup-shaped to barrel-shaped fruit to 6 mm long and 6 mm wide, disc descending, valves 4 below the rim.
Seed type:
Orange-brown ovoid seed to 1.5 mm long and 1 mm wide, with reticulated surface.
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 one collection, the seed viability was high, at 100%.
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
BGA38000 (15.3 g)3020-Jan-2010TST891
South Eastern
Jun-2010100%-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.