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Allocasuarina distyla, commonly known as scrub she-oak, is a shrub or small tree of the She-oak family Casuarinaceae endemic to New South Wales.

Allocasuarina distyla
Developing fruit
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Casuarinaceae
Genus:	Allocasuarina
Species:	A. distyla
Binomial name
Allocasuarina distyla (Vent.) L.A.S.Johnson
Occurrence data from AVH
Synonyms[1]
Casuarina distyla Vent. Casuarina distyla var. prostrata Maiden & Betche Casuarina dumosa A.Cunn. ex Miq. Casuarina rigida Miq.

Description

This dioecious[2] shrub or small tree will typically grow to a height of 4 metres (13 ft) tall, or 7 metres (22 feet) in richer soils, and is found in coastal areas of New south Wales and southern Queensland.[3] This plant is extremely resilient as it has the ability to grow in poor conditions such as draught. Its erect branchlets are up to 35 centimetres (14 in) long.[2] The ridges are angular to rounded and occasionally pubescent.[2] There are 6–8 teeth.[2] The spikes of male flowers are 1–5 centimetres (0.4–2.0 in) long with roughly 5 whorls of flowers per centimetre.[2] The cones are up to 12 millimetres (0.5 in) long and often have a sterile apex. The samara is a very dark brown.[2] This plant is dioecious, meaning that the male and female reproductive organs develop on different trees. The most common time this plant will flower is between the months of July through September, however, this may vary depending on rainfall. In Greek, 'allos' translates to 'other' and 'Casuarina' implies a comparison to 'foliage'. 'Di' translates to 'two' whereas 'stylos' translates to 'column'. These translations relate to the characteristics of this plant.

Taxonomy

The species was first described as Casuarina distyla by the botanist Étienne Pierre Ventenat in 1802 in the Description des Plantes Nouvelles et peu connues, cultivees dans le Jardin de J.M. Cels.[4][5] It was subsequently reclassified into the Allocasuarina genus by Lawrence Alexander Sidney Johnson in 1982 in a revision of the sheoaks, Notes on Casuarinaceae II., published in the Journal of the Adelaide Botanic Gardens.[6][7]

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References

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