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The vegetation of Ironbark Nature Reserve (1603 ha) and Bornhardtia Voluntary Conservation Agreement (704 ha), 75 km north west of Armidale, 30 km north east of Barraba (30°19’S, 150°53’E) in the Barraba Shire, in the Northern Tablelands Bioregion NSW, is described. Eleven communities are defined based on flexible UPGMA analysis of coverabundance scores of all vascular plant taxa. These communities are mapped based on ground truthing, air photo interpretation and substrate. All communities are simple in structure being primarily of woodlands or shrublands.
Communities described are: (1) Eucalyptus macrorhyncha (Red Stringybark) – Eucalyptus blakelyi (Red Gum) Woodlands, (2) Eucalyptus caleyi (Caley’s Ironbark) – Eucalyptus andrewsii (Western New England Blackbutt) Woodlands, (3) Eucalyptus prava (Orange Gum) – Eucalyptus andrewsii (Western New England Blackbutt) Woodlands, (4) Eucalyptus dealbata (Tumbledown Gum) – Eucalyptus caleyi (Caley’s Ironbark) Woodlands, (5) Eucalyptus prava (Orange Gum) – Eucalyptus blakelyi (Red Gum) Woodlands, (6) Eucalyptus quinniorum (Quinn’s Gum) – Eucalyptus prava (Orange Gum) Forests, (7) Angophora floribunda (Rough-barked Apple) – Eucalyptus blakelyi (Red Gum) Woodlands, (8) Casuarina cunninghamiana (River Oak) – Eucalyptus blakelyi (Red Gum) – Angophora floribunda (Apple) Forests, (9) Calytrix tetragona (Fringe Myrtle) – Ozothamnus obcordatus (Daisy Bush) Open Shrublands, (10) Homoranthus bornhardtiensis Open Shrublands and (11) Leptospermum polygalifolium (Tea-tree) Wetland.
All communities described here are inadequately represented in the conservation network with one (White-Box – Yellow-Box – Blakely's Red Gum Woodland) listed as endangered on the NSW TSC Act. Both conservation areas and neighbouring parcels of land contain extensive areas of little disturbed high quality "old growth". 38 species are of conservation significance of which one is listed as Vulnerable and one Endangered on the NSW TSC Act. The broader remnant is under increasing pressure for clearing for grazing production and the combined area of both reserves is considered to be inadequate to protect the significant features of the local region.
The vegetation of Arakoola Nature Reserve (3189 ha), 29°17’S, 150°48’E, 100 km north-west of Inverell, in north western New South Wales is described. Seven vegetation communities are defined based on flexible UPGMA analysis of cover-abundance scores of all vascular plant taxa. These communities are mapped based on ground-truthing, air photo interpretation and geological substrate. They are: Community 1: Eucalyptus albens (White Box) – Eucalyptus melanophloia (Silver-leaved Ironbark) Basalt Woodland, Community 2: Angophora leiocarpa (Smooth-barked Apple) – Corymbia dolichocarpa (Long-fruited Bloodwood) Sandstone Woodland, Community 3: Angophora leiocarpa (Smoothbarked Apple) – Eucalyptus macrorhyncha (Red Stringybark) Woodland, Community 4: Chloris truncata (Windmill Grass) Grassland, Community 5: Herbfield/Sedgeland, Community 6: Eucalyptus camaldulensis (Red Gum) – Eucalyptus melliodora (Yellow Box) Riparian Woodland, Community 7: Angophora floribunda (Rough-barked Apple) – Callistemon viminalis (Weeping Bottlebrush) Riparian Woodland.
There are 23 taxa considered significant within Arakoola Nature Reserve including the twining herb Desmodium campylocaulon and the shrub Pomaderris queenslandica (listed as Endangered under the NSW Threatened Species Conservation Act), and the grasses Dichantheum setosum and Bothriochloa biloba, and the perennial herbs Goodenia macbarroni and Thesium australe (all listed as Vulnerable under the TSC Act). A comprehensive species list of about 450 plant species is given for the Nature Reserve.