Common name: Swamp She-oak
Allocasuarina paludosa (Sieber ex Spreng.) L.A.S.Johnson APNI* Synonyms: Casuarina paludosa Sieber ex Spreng. APNI*
Casuarina distyla var. prostrata Maiden & Betche APNI*
Description: Dioecious or monoecious spreading shrub, 0.3–3 m high; bark smooth, greyish.
Branchlets ascending or curved, to 20 cm long; articles smooth, usually obviously densely hairy in furrows; ridges flat or slightly rounded-convex, usually with a median groove (more obvious when dried), occasionally pubescent (not in groove); teeth 6–8, erect or spreading, not overlapping, often withering, 0.5–0.9 mm long.
Male spikes 1–2.5 cm long, 7–9 whorls per cm; bracteoles persistent; anther 0.7–1.1 mm long.
Cones cylindrical to ovoid, sessile or on short peduncle to 2 mm long; cone body 10–18 mm long7–13 mm diameter; bracteoles truncate to obtuse, with a pyramidal protuberance shorter than bracteole body, with truncate apex, often with minute deciduous mucro. Samara 3.5–5.0 mm long, dark brown to black.
Distribution and occurrence: South from Broken Bay along coast and adjoining tablelands. Also in Vic, Tas, SA. In heath, or on poorly drained soils above swamps at edge of woodland.
NSW subdivisions: CC, SC, CT, ST
Other Australian states: Vic. Tas. S.A.
Individuals in a population may appear green or grey depending on hairiness of articles. Variable as to size characters.
Text by K. L. Wilson & L. A. S. Johnson (1990); edited KL Wilson (Feb 2014, 2026)
Taxon concept: Flora of NSW 1 (1990); Wilson and Johnson, Flora of Australia vol. 3 (1989)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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