Seeds of South Australia
Eucalyptus obliqua (Myrtaceae)
Messmate Stringybark
List of species for Eucalyptus
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Seed collecting:
January to December
Herbarium regions:
Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Least Concern
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern   [lots of scattered trees]
Glenelg Plain (NCP02) 
 Least Concern
Lucindale (NCP03) 
 Least Concern   [common in Reedy Ck Range]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [widespread & stable]
Fleurieu (KAN02) 
 Least Concern   [threat from drying climate; good recruitment]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern   [threat from drying climate; good recruitment]
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. Obliqua from the Latin 'obliquus' meaning oblique; referring to the unequal length of the leaf bases. This species was used as the type specimen for the genus Eucalyptus.
Distribution:
Found on Kangaroo Island, southern Mount Lofty Ranges and the lower South-east in South Australia; growing on fertile soils in high rainfall areas. Also found in Queensland, New South Wales, Victoria and Tasmania.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Single to multi-stemmed tree to 40 m tall (tall in eastern states) with stringy fibrous bark. Juvenile leaves opposite for many pairs then becoming disjunct, ovate to broad-lanceolate, glossy green. Adult leaves broad-lanceolate to falcate, to 220 mm long and 60 mm wide, shiny green. Inflorescence axillary clusters with 11-21 white flowers. Buds to 9 mm long and 5 mm wide, bud-cap conical shorter that the base. Flowering between December and March.
Fruit type:
Woody wine-glass shape fruit to 12 mm long and 11 mm wide, on individual stalk, disc descending, valves 3 or 4 below the rim.
Seed type:
Dark brown irregularly pyramidal seed to 2.5 mm long and 1.5 mm wide, with angled sides and covered in fine wrinkles.
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 germination:
Seeds are non-dormant, viable seed should germinate readily.