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{{Short description|Species of eucalyptus}}
{{italic title}}
{{speciesbox
{{taxobox
|name = ''Mongamulla Mallee ''
|name = Mongamulla mallee
|image = Eucalyptus deuaensis Batemans Bay.jpg
|image = Eucalyptus deuaensis habit.jpg
|image_caption = ''Eucalyptus deuaensis'' in the [[Australian National Botanic Gardens|ANBG]]
|image_caption =
|status =
|status=
|status_system = EPBC
|status_system=
⚫
|genus = Eucalyptus
|regnum = [[Plantae]]
⚫
|species = deuaensis
|unranked_divisio = [[Angiosperm]]s
|authority = [[Douglas John Boland|Boland]] & [[Phil M. Gilmour|P.M.Gilmour]]<ref name=APC>{{cite web|title=''Eucalyptus deuaensis''|url= https://biodiversity.org.au/nsl/services/apc-format/display/71403|publisher=Australian Plant Census|access-date=30 May 2019}}</ref>
|unranked_classis = [[Eudicot]]s
|unranked_ordo = [[Rosid]]s
|ordo = [[Myrtales]]
|familia = [[Myrtaceae]]
⚫
|genus = ''[[Eucalyptus]]''
⚫
|species = '''''E. deuaensis '''''
|binomial = ''Eucalyptus deuaensis''
|binomial_authority = Boland & Gilmour
|}}
|}}
'''''Eucalyptus deuaensis''''', the '''Mongamulla Mallee''' is a [[eucalyptus]] of south eastern [[Australia]]. A threatened species, with a rarity rating of 2RCit on [[ROTAP]].<ref>{{cite web |title=''Eucalyptus deuaensis''|work= PlantNET - NSW Flora Online|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~deuaensis}}</ref>


'''''Eucalyptus deuaensis''''', commonly known as the '''Mongamulla mallee''',<ref name="RBGS">{{cite web |last1=Hill |first1=Ken |title=''Eucalyptus deuaensis'' |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~deuaensis |publisher=Royal Botanic Garden Sydney |access-date=30 May 2019}}</ref> is a species of [[Mallee (habit)|mallee]] or small tree [[Endemism|endemic]] to a small area of [[New South Wales]]. It has smooth bark, lance-shaped to curved adult leaves, diamond-shaped buds arranged in leaf [[wikt:axil|axil]]s in groups of seven, white flowers and bell-shaped, hemispherical or conical fruit.[[File:Eucalyptus deuaensis flowers.jpg|thumb|225px|flowers]][[File:Eucalyptus deuaensis fruit.jpg|thumb|225px|fruit]]
The original specimen was collected in 1984, at the only known population, near [[Mongamulla Mountain]], in [[Deua National Park]], west of [[Moruya]].<ref>A Field Guide to Eucalypts - Brooker & Kleinig volume 1, ISBN 0-909605-62-9 page 275</ref>


==Description==
Found at altitudes between 500 and 800 metres above sea level on infertile shallow soil, based on [[rhyolite]].
''Eucalyptus deuaensis'' is a rare mallee or small tree that typically grows to a height of {{cvt|4|m}} with smooth, white or pink to yellow bark and forms a [[lignotuber]]. Young plants and [[coppice]] regrowth have [[Sessility (botany)|sessile]], egg-shaped to lance-shaped leaves arranged in opposite pairs, {{cvt|35-75|mm}} long and {{cvt|13-23|mm}} wide. Adult leaves are arranged alternately, the same colour on both sides, lance-shaped to curved, {{cvt|70-100|mm}} long and {{cvt|10-23|mm}} wide. The flower buds are arranged in leaf [[wikt:axil|axil]]s in groups of seven on an unbranched [[Peduncle (botany)|peduncle]] up to {{cvt|4|mm}} long, the individual buds sessile. Mature buds are diamond-shaped, about {{cvt|8|mm}} long and {{cvt|6-7|mm}} wide with a conical or pyramid-shaped [[Operculum (botany)|operculum]]. Flowering has been observed in January and November and the flowers are white. The fruit is a woody bell-shaped, hemispherical or conical [[Capsule (botany)|capsule]] {{cvt|5-6|mm}} long and {{cvt|10-15|mm}} wide with the valves protruding.<ref name="RBGS" /><ref name="CANBR">{{cite web |title=''Eucalyptus deuaensis'' |url=https://apps.lucidcentral.org/euclid/text/entities/eucalyptus_deuaensis.htm |publisher=Euclid: Centre for Australian National Biodiversity Research |access-date=4 June 2020}}</ref><ref name="ABRS">{{cite web |title=''Eucalyptus deuaensis'' |url=https://profiles.ala.org.au/opus/foa/profile/Eucalyptus%20deuaensis |publisher=Australian Biological Resources Study, Department of the Environment and Energy, Canberra |access-date=30 May 2019}}</ref>
The ''Mongamulla Mallee'' is a [[Mallee (habit)|mallee]] or small tree to 5 metres tall. Old bark is grey or a pale reddish brown. After the shedding of the old bark, the newer bark underneath is white or yellowish.


==Taxonomy and naming==
Leaves are [[lanceolate]] or curved in shape; 7 to 10&nbsp;cm long, 1 to 1.7&nbsp;cm wide. The same glossy colour green above as below. Leaf veins are not easily seen. Though oil glands are prominent. Flowering occurs in January and February. The angular gumnuts are crowded together, without stalks.
''Eucalyptus deuaensis'' was first formally described in 1987 by [[Douglas John Boland|Douglas Boland]] and [[Phil Gilmour]] from a specimen collected "near Mongamulla Mountain, [[Deua National Park]]" by Gavin Moran. The description was published in the journal ''[[Australian Systematic Botany|Brunonia]]''<ref name="ANBG">{{cite web |title=Moran, Gavin Francis James (1949 - ) |url=http://www.anbg.gov.au/biography/moran-gavin-francis-james.html |publisher=Australian National Herbarium |access-date=30 May 2019}}</ref><ref name=APNI>{{cite web|title=''Eucalyptus deuaensis''|url= https://id.biodiversity.org.au/instance/apni/454952 |publisher=APNI|access-date=30 May 2019}}</ref> The [[Botanical name|specific epithet]] (''deuaensis'') refers to Deua National Park. The ending ''-ensis'' is a [[Latin]] [[wikt:suffix|suffix]] "denoting place, locality, or country".<ref name="RWB">{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page=303}}</ref><ref>A Field Guide to Eucalypts - Brooker & Kleinig volume 1, {{ISBN|0-909605-62-9}} page 275</ref>

==Distribution and habitat==
Mongamulla mallee is only known from Mongamulla Mountain in Deua National Park where it grows on steep, rocky cliffs.


== References ==
== References ==
{{reflist}}
{{Reflist}}

{{Taxonbar|from=Q5405578}}


{{DEFAULTSORT:Eucalyptus Deuaensis}}
{{DEFAULTSORT:Eucalyptus Deuaensis}}
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[[Category:Flora of New South Wales]]
[[Category:Flora of New South Wales]]
[[Category:Mallees (habit)]]
[[Category:Mallees (habit)]]
[[Category:Plants described in 1987]]


{{Eucalyptus-stub}}
{{Australia-rosid-stub}}

Latest revision as of 10:56, 7 March 2021

Mongamulla mallee
Eucalyptus deuaensis in the ANBG
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. deuaensis
Binomial name
Eucalyptus deuaensis

Eucalyptus deuaensis, commonly known as the Mongamulla mallee,[2] is a species of mallee or small tree endemic to a small area of New South Wales. It has smooth bark, lance-shaped to curved adult leaves, diamond-shaped buds arranged in leaf axils in groups of seven, white flowers and bell-shaped, hemispherical or conical fruit.

flowers
fruit

Description[edit]

Eucalyptus deuaensis is a rare mallee or small tree that typically grows to a height of 4 m (13 ft) with smooth, white or pink to yellow bark and forms a lignotuber. Young plants and coppice regrowth have sessile, egg-shaped to lance-shaped leaves arranged in opposite pairs, 35–75 mm (1.4–3.0 in) long and 13–23 mm (0.51–0.91 in) wide. Adult leaves are arranged alternately, the same colour on both sides, lance-shaped to curved, 70–100 mm (2.8–3.9 in) long and 10–23 mm (0.39–0.91 in) wide. The flower buds are arranged in leaf axils in groups of seven on an unbranched peduncle up to 4 mm (0.16 in) long, the individual buds sessile. Mature buds are diamond-shaped, about 8 mm (0.31 in) long and 6–7 mm (0.24–0.28 in) wide with a conical or pyramid-shaped operculum. Flowering has been observed in January and November and the flowers are white. The fruit is a woody bell-shaped, hemispherical or conical capsule 5–6 mm (0.20–0.24 in) long and 10–15 mm (0.39–0.59 in) wide with the valves protruding.[2][3][4]

Taxonomy and naming[edit]

Eucalyptus deuaensis was first formally described in 1987 by Douglas Boland and Phil Gilmour from a specimen collected "near Mongamulla Mountain, Deua National Park" by Gavin Moran. The description was published in the journal Brunonia[5][6] The specific epithet (deuaensis) refers to Deua National Park. The ending -ensis is a Latin suffix "denoting place, locality, or country".[7][8]

Distribution and habitat[edit]

Mongamulla mallee is only known from Mongamulla Mountain in Deua National Park where it grows on steep, rocky cliffs.

References[edit]

  1. ^ "Eucalyptus deuaensis". Australian Plant Census. Retrieved 30 May 2019.
  2. ^ a b Hill, Ken. "Eucalyptus deuaensis". Royal Botanic Garden Sydney. Retrieved 30 May 2019.
  3. ^ "Eucalyptus deuaensis". Euclid: Centre for Australian National Biodiversity Research. Retrieved 4 June 2020.
  4. ^ "Eucalyptus deuaensis". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 30 May 2019.
  5. ^ "Moran, Gavin Francis James (1949 - )". Australian National Herbarium. Retrieved 30 May 2019.
  6. ^ "Eucalyptus deuaensis". APNI. Retrieved 30 May 2019.
  7. ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 303.
  8. ^ A Field Guide to Eucalypts - Brooker & Kleinig volume 1, ISBN 0-909605-62-9 page 275
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