{{Short description|Species of eucalyptus}} {{Speciesbox |name = Alpine ash |image = Eucalyptus delegatensis habit.jpg |image_caption = ''Eucalyptus delegatensis'' growing between Corryong and Omeo |status = LC |status_system= IUCN3.1 |status_ref = <ref>{{cite iucn |author=Fensham, R. |author2=Laffineur, B. |author3=Collingwood, T. |year=2019 |title=''Eucalyptus delegatensis'' |volume=2019 |article-number=e.T61912169A61912172 |doi=10.2305/IUCN.UK.2019-3.RLTS.T61912169A61912172.en |access-date=23 October 2021}}</ref> |genus = Eucalyptus |species = delegatensis |authority = R.T.Baker<ref name=APC>{{cite web|title=''Eucalyptus delegatensis''|url= https://biodiversity.org.au/nsl/services/apc-format/display/71357|publisher=Australian Plant Census|access-date=28 May 2019}}</ref> }}
'''''Eucalyptus delegatensis''''', commonly known as '''alpine ash''', '''gum-topped stringybark''', '''white-top'''<ref name="CANBR">{{cite web |title=''Eucalyptus delegatensis'' subsp. ''delegatensis'' |url=https://apps.lucidcentral.org/euclid/text/entities/eucalyptus_delegatensis_subsp._delegatensis.htm |publisher=Euclid: Centre for Australian National Biodiversity Research |access-date=4 June 2020}}</ref> and in Victoria as '''woollybutt''',<ref>Second paragraph of Boland, Douglas J. (1985). "Taxonomic revision of Eucalyptus delegatensis R.T.Baker (Myrtaceae)". Australian Forest Research. 15: 173–181. Retrieved 28 May 2019.</ref> is a species of tree that is endemic to southeastern Australia. It has a straight trunk with rough, fibrous to stringy bark on the lower half of the trunk, smooth white bark above, lance-shaped to curved adult leaves, flower buds in groups of between seven and fifteen, white flowers and barrel-shaped or hemispherical fruit.thumb|225px|flower budsthumb|225px|fruitthumb|225px|bark
==Description== ''Eucalyptus delegatensis'' is a tree that typically grows to a height of {{cvt|40-50|m}}, sometimes to {{cvt|90|m}}, and forms a lignotuber. The bark is rough, grey to black, fibrous or stringy on the lower half of the trunk, smooth white to greyish above. Young plants and coppice regrowth have broadly lance-shaped to egg-shaped leaves {{cvt|70-200|mm}} long and {{cvt|27-82|mm}} wide. Adult leaves are lance-shaped to curved, the same glossy green to bluish green on both sides, {{cvt|75-230|mm}} long and {{cvt|13-55|mm}} wide on a petiole {{cvt|10-45|mm}} long. The flower buds are arranged in groups of between seven and fifteen in leaf axils on an unbranched peduncle {{cvt|8-20|mm}} long, the individual buds on a pedicel {{cvt|3-5|mm}} long. Mature buds are oval to club-shaped, green to yellow or red, {{cvt|4-5|mm}} long and wide with a conical or rounded operculum with a small point on the tip. Flowering occurs between December and March and the flowers are white. The fruit is a woody barrel-shaped to hemispherical capsule {{cvt|6-11|mm}} long and wide with the valves near rim level or enclosed in the fruit.<ref name="CANBR" /><ref name="ABRS">{{cite web |last1=Chippendale |first1=George M. |title=''Eucalyptus delegatensis'' |url=https://profiles.ala.org.au/opus/foa/profile/Eucalyptus%20delegatensis |publisher=Australian Biological Resources Study, Department of the Environment and Energy, Canberra |access-date=28 May 2019}}</ref><ref name="RBGS">{{cite web |last1=Hill |first1=Ken |title=''Eucalyptus delegatensis'' |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~delegatensis |publisher=Royal Botanic Garden Sydney |access-date=28 May 2019}}</ref><ref name="RBGV">{{cite web |last1=Brooker |first1=M. Ian |last2=Slee |first2=Andrew V. |title=''Eucalyptus delegatensis'' subsp. ''delegatensis'' |url=https://vicflora.rbg.vic.gov.au/flora/taxon/c7da359b-eae4-42b5-b429-2a043aedabe1 |publisher=Royal Botanic Gardens, Victoria |access-date=28 May 2019}}</ref>
==Taxonomy and naming== ''Eucalyptus delegatensis'' was first formally described in 1900 by Richard Thomas Baker from a specimen collected by William Baeuerlen, (previously known as Wilhelm Bäuerlen) on "Delegate Mountain". The description was published in ''Proceedings of the Linnean Society of New South Wales''.<ref name=APNI>{{cite web|title=''Eucalyptus delegatensis''|url= https://id.biodiversity.org.au/instance/apni/454945|publisher=APNI|access-date=28 May 2019}}</ref><ref name="R.T.Baker">{{cite journal |last1=Baker |first1=Richard Thomas |title=On some new species of ''Eucalyptus'' |journal=Proceedings of the Linnean Society of New South Wales |date=1900 |volume=25 |pages=305–308 |doi=10.5962/bhl.part.12156 |url=https://www.biodiversitylibrary.org/item/30484#page/335/mode/1up |access-date=28 May 2019}}</ref> The specific epithet (''delegatensis'') refers to the type location.<ref name="CANBR" />
In 1985 Douglas John Boland described two subspecies and the names have been accepted by the Australian Plant Census: * ''Eucalyptus delegatensis'' <small>R.T.Baker</small> subsp. ''delegatensis''<ref name=APC1>{{cite web|title=''Eucalyptus delegatensis'' subsp. ''delegatensis''|url= https://biodiversity.org.au/nsl/services/apc-format/display/71363|publisher=Australian Plant Census|access-date=28 May 2019}}</ref> that has broadly lance-shaped juvenile leaves and is found in New South Wales and Victoria; * ''Eucalyptus delegatensis'' subsp. ''tasmaniensis'' <small>Boland</small><ref name=APC2>{{cite web|title=''Eucalyptus delegatensis'' subsp. ''tasmaniensis''|url= https://biodiversity.org.au/nsl/services/apc-format/display/71366|publisher=Australian Plant Census|access-date=28 May 2019}}</ref> that has more or less round juvenile leaves with a short "drip-tip" and only grows in Tasmania.<ref name="Boland">{{cite journal |last1=Boland |first1=Douglas J. |title=Taxonomic revision of ''Eucalyptus delegatensis'' R.T.Baker (Myrtaceae) |journal=Australian Forest Research |date=1985 |volume=15 |pages=173–181 |url=https://drive.google.com/file/d/0B9KIbbp1-PmyU0UyWldPWjI3Tlk/view |access-date=28 May 2019}}</ref>
==Distribution and habitat== Alpine ash is widespread and often dominant in grassy or wet subalpine forest, in deep fertile soil, often on slopes, and commonly forms pure stands. In New South Wales and the Australian Capital Territory it is found south from the Brindabella Range and in Victoria it occurs at altitudes between {{cvt|900 and 1500|m}} east of Mount Macedon. Subspecies ''tasmaniensis'' is endemic to Tasmania.<ref name="RBGS" /><ref name="RBGV" />
==See also== *List of ''Eucalyptus'' species
==References== {{Reflist}}
{{Taxonbar|from=Q2687372}} {{Authority control}}
{{DEFAULTSORT:Eucalyptus Delegatensis}} delegatensis Category:Myrtales of Australia Category:Flora of the Australian Capital Territory Category:Flora of New South Wales Category:Flora of Tasmania Category:Flora of Victoria (state) Category:Plants described in 1900 Category:Taxa named by Richard Thomas Baker