Plants of South Eastern New South Wales
Eucalyptus sieberi
Common name
Silvertop ash, Black ash, Coast ash, Ironbark
Family
Myrtaceae
Where found
Forest. Coast, ranges, tablelands, and ACT.
Notes
Tree to 45 m tall. Bark rough on the trunk and bases of larger branches. Rough bark on the trunks of younger trees thin, flaky, shortly fibrous, orange-brown. On old trees the rough bark is thick, compacted, longitudinally furrowed, dark grey to black. Smooth bark of the upper branches sometimes powdery, shedding in long ribbons. Branchlets sometimes glaucous. Juvenile stems rounded in cross section, glaucous. Juvenile leaves stalkless and opposite each other for a few pairs, then becoming stalked and alternating up the stems, 6-17 cm long, 16-75 mm wide, dull, blue-green, grey-green, or blue-grey, to glaucous. Adult leaves 8.5-19.5 cm long, 12-38 mm wide, glossy, green to olive-green. Flowers white, with 0 petals. Flower clusters 7-15 flowered. Mature flower buds 3–7 mm long, caps shorter than the base. Outer ring of stamens not producing pollen. Flowers winter-summer. Gumnuts 6-9 mm in diameter. Gumnuts that have dropped their seed have valves that are not very noticeable.
Hybridises with Eucalyptus burgessiana on the coast north from Jervis Bay.
All native plants on unleased land in the ACT are protected.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~sieberi (accessed 22 January, 2021)
EUCLID description: https://apps.lucidcentral.org/euclid/text/entities/eucalyptus_sieberi.htm (accessed 22 January, 2021)
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