Allocasuarina
She-oak
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Location & distribution maps
Location & distribution maps
Phylogeny & links to associated information
Phylogeny & links to associated information
Wikipedia links: Angiosperms > Eudicots > Rosids > Fagales > Casuarinaceae > Allocasuarina
Other links:
Plant information
Plant information
Common name: She-oak
Conservation status: Varies
Etymology:
The name Allocasuarina means "other Casuarina"
"Allo-" in Greek means "other"
Flowers:
Allocasuarinas have separate male and female flowers
Sometimes on one plant (monoecious), otherwise on separate male and female plants, (dioecious)
Male flowers are arranged in spikes along branchlets that are usually different from the vegetative branchlets
Female flowers are in spikes on short side-branches
Fruit:
Cone-like structures enclosing winged seeds known as samaras
These are are grey or yellowish-brown
The bracteoles of the fruiting cones are thin, woody and extend well beyond the cone body
The samaras are reddish-brown to black, the bracteoles thickly woody and extend only slightly beyond the cone body
Leaves:
The leaves reduced to 4 to 14 scale-like teeth arranged around in whorls around ribbed, jointed branchlets
There are 6 to 20 scale-like teeth in each whorl of casuarina leaves
Stem & branches:
x
Roots:
x
Habit:
Trees or shrubs with soft, pendulous, green branchlets
Habitat:
Usually grow in nutrient-deficient soils
Distribution:
Endemic to Australia
Distribution and habitat
Mainly in southern Australia, but 4 species occur in north-eastern Queensland, and one in the north of Western Australia
Species:
World: 61 species
Australia: 61 species
Additional notes:
Taxonomy
The genus Allocasuarina was first formally described in 1982 by Lawrence Johnson in the Journal of the Adelaide Botanic Gardens
In the same paper, Johnson transferred some species previously included in Casuarina to the new genus, and nominated Allocasuarina torulosa Aiton L.A.S.Johnson as the type species
List of species
The following is a list of Allocasuarina accepted by the Australian Plant Census and Plants of the World Online as of April 2023:
Allocasuarina acuaria (F.Muell.) L.A.S.Johnson (W.A.)
Allocasuarina acutivalvis (F.Muell.) L.A.S.Johnson (W.A.)
Allocasuarina anfractuosa Wege & S.R.Barrett (W.A.)
Allocasuarina brachystachya L.A.S.Johnson (N.S.W.)
Allocasuarina campestris (Diels) L.A.S.Johnson (W.A.)
Allocasuarina corniculata (F.Muell.) L.A.S.Johnson (W.A.)
Allocasuarina crassa L.A.S.Johnson – Cape Pillar sheoak (Tas.)
Allocasuarina decaisneana (F.Muell.) L.A.S.Johnson – desert oak, desert sheoak (N.T., W.A., S.A.)
Allocasuarina decussata (Benth.) L.A.S.Johnson – karri oak (W.A.)
Allocasuarina defungens L.A.S.Johnson – dwarf heath casuarina (N.S.W.)
Allocasuarina dielsiana (C.A.Gardner) L.A.S.Johnson – northern sheoak (W.A.)
Allocasuarina diminuta L.A.S.Johnson (N.S.W.)
Allocasuarina distyla (Vent.) L.A.S.Johnson – scrub she-oak (N.S.W.)
Allocasuarina drummondiana (Miq.) L.A.S.Johnson (W.A.)
Allocasuarina duncanii L.A.S.Johnson & D.I.Morris – Duncan's sheoak, conical sheoak (Tas.)
Allocasuarina eriochlamys (L.A.S.Johnson) L.A.S.Johnson (W.A.)
Allocasuarina fibrosa (C.A.Gardner) L.A.S.Johnson – woolly sheoak (W.A.)
Allocasuarina filidens L.A.S.Johnson – Mount Beerwah sheoak (Qld.)
Allocasuarina fraseriana (Miq.) L.A.S.Johnson – western sheoak (W.A.)
Allocasuarina glareicola L.A.S.Johnson (N.S.W.)
Allocasuarina globosa L.A.S.Johnson (W.A.)
Allocasuarina grampiana L.A.S.Johnson – Grampians sheoak (Vic.)
Allocasuarina grevilleoides (Diels) L.A.S.Johnson
Allocasuarina gymnanthera L.A.S.Johnson (N.S.W.)
Allocasuarina helmsii (Ewart & M. Gordon) L.A.S.Johnson (W.A., S.A.)
Allocasuarina huegeliana (Miq.) L.A.S.Johnson – rock sheoak (W.A.)
Allocasuarina humilis (Otto & A.Dietr.) L.A.S.Johnson – dwarf sheoak (W.A.)
Allocasuarina hystricosa Wege (W.A.)
Allocasuarina inophloia (F.Muell. & F.M.Bailey) L.A.S.Johnson – stringybark she-oak (Qld., N.S.W.)
Allocasuarina lehmanniana (Miq.) L.A.S.Johnson – dune sheoak (W.A.)
Allocasuarina littoralis (Salisb.) L.A.S.Johnson – black sheoak (Qld., N.S.W., A.C.T., Vic., Tas.)
Allocasuarina luehmannii (R.T.Baker) L.A.S.Johnson – bull-oak, buloke (Qld., N.S.W., A.C.T., Vic., TAS.)
Allocasuarina mackliniana L.A.S.Johnson (Vic., S.A.)
Allocasuarina media L.A.S.Johnson (Vic.)
Allocasuarina microstachya (Miq.) L.A.S.Johnson (W.A.)
Allocasuarina misera L.A.S.Johnson (Vic.)
Allocasuarina monilifera (L.A.S.Johnson) L.A.S.Johnson – necklace sheoak (Tas.)
Allocasuarina muelleriana (Miq.) L.A.S.Johnson – slaty sheoak (S.A., Vic.)
Allocasuarina nana (Sieber ex Spreng.) L.A.S.Johnson – dwarf she-oak, stunted sheoak (N.S.W., Vic.)
Allocasuarina ophiolitica L.A.S.Johnson
Allocasuarina paludosa(Sieber ex Spreng.) L.A.S.Johnson (scrub sheoak)
Allocasuarina paradoxa (Macklin) L.A.S.Johnson
Allocasuarina pinaster (C.A.Gardner) L.A.S.Johnson
Allocasuarina portuensis L.A.S.Johnson
Allocasuarina pusilla (Macklin) L.A.S.Johnson (dwarf sheoak)
Allocasuarina ramosissima (C.A.Gardner) L.A.S.Johnson
Allocasuarina rigida (Miq.) L.A.S.Johnson
Allocasuarina robusta (Macklin) L.A.S.Johnson
Allocasuarina rupicola L.A.S.Johnson
Allocasuarina scleroclada (L.A.S.Johnson) L.A.S.Johnson
Allocasuarina simulans L.A.S.Johnson
Allocasuarina spinosissima (C.A.Gardner) L.A.S.Johnson
Allocasuarina striata (Macklin) L.A.S.Johnson (small bull-oak)
Allocasuarina tessellata (C.A.Gardner) L.A.S.Johnson
Allocasuarina thalassoscopica L.A.S.Johnson
Allocasuarina thuyoides (Miq.) L.A.S.Johnson (horned she-oak)
Allocasuarina tortiramula E.M.Benn. (twisted sheoak)
Allocasuarina torulosa (Aiton) L.A.S.Johnson (forest sheoak)
Allocasuarina trichodon (Miq.) L.A.S.Johnson
Allocasuarina verticillata (Lam.) L.A.S.Johnson (drooping sheoak)
Allocasuarina zephyrea L.A.S.Johnson
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