Seeds of South Australia
Eucalyptus viminalis ssp. cygnetensis (Myrtaceae)
Rough-bark Manna Gum
List of species for Eucalyptus
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Seed collecting:
January to December
Herbarium regions:
Eyre Peninsula, Murray, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Rare   (IUCN: RA d(ii))   [isolated patches, koalas a threat]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   [found in small pockets, limited habitat; koalas a threat]
Glenelg Plain (NCP02) 
 Least Concern
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [on roadsides & private land]
Kangaroo Island (KAN01)Kanmantoo
 Rare   (IUCN: RA d(ii))   [if koalas and riverine systems are managed is stable; fairly restricted]
Fleurieu (KAN02) 
 Near Threatened   [threatened by olives; J Quarmby thinks VU A1 ace with decline]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened   [threatened by olives; declining in some areas but overall stable]
Talia (EYB04)Eyre Yorke Block
 Rare   (IUCN: RA d(i,ii))
Murray Mallee (MDD02)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)   (Probable Decline)   [edge of range]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(ii))   [common in sthn section]
Wimmera (MDD05) 
 Rare   (IUCN: RA d(i,ii))
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. Viminalis from the Latin 'viminalis' meaning viminous or osier-bearing; referring to the resemblance of the adult foliage to that of the osier willow. Cygnetensis named after the Cygnet River on Kangaroo Island where the type specimen was collected.
Distribution:
Found on southern Eyre Peninsula, Kangaroo Island, southern Mount Lofty Ranges and the South-east in South Australia, growing on well-drained sandy soils. Also found in Victoria.
Status:
Native. Uncommon in South Australia. Common in Victoria.
Plant description:
Single- or several-stemmed spreading tree to 22 m tall with smooth, pale grey to creamy-white bark throughout and rough and persistent, fissured, grey-brown bark on the lower trunk and branches. Juvenile leaves narrow-lanceolate to lanceolate, glossy, green. Adult leaves to 300 mm long and 30 mm wide, lanceolate, sometimes wavy, glossy, green. Flowers axillary in groups of 7 (or mixed 3 and 7). Buds to 8 mm long and 5 mm wide, bud-cap cone-shaped equal to the base. Flowers white appearing in summer to autumn. This subspecies is distinguished from the other subspecies found in South Australia, Eucalyptus viminalis ssp. viminalis which has a large tree habit, mostly or completely smooth bark and flowers, buds and fruits in groups of 3.
Fruit type:
Rounded to cone-shaped fruit to 8 mm long and 9 mm wide, disc ascending, valves 3 or 4 above the rim.
Seed type:
Dark brown to black ovoid seed, with wrinkled 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 germination:
Seeds are non-dormant, viable seed should germinate readily.