Nature conservation

Threatened species

Silky Swainson-pea - Murray Darling Depression: Distribution and vegetation associations

Scientific name: Swainsona sericea
Conservation status in NSW: Vulnerableexternal link
Commonwealth status: Not listedexternal link
Last updated: 11 Feb 2019

Distribution of the species within this region

The Silky Swainson-pea is known or predicted to occur in the following sub-regions of the Murray Darling Depression Interim Biogeographic Regionalisation of Australia Region.

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IBRA sub-region  Known or predictedGeographic restrictions within region
South Olary Plain Known None

Vegetation formations, classes and types

In this region the Silky Swainson-pea - Murray Darling Depression is known to be associated with the following vegetation formations and classes. Click on a name to get background information about it.

  • Arid shrublands (Chenopod sub-formation)
    • Gibber Chenopod Shrublands
      • 150 Bottlewasher - Copperburr grassland of the arid zone
      • 167 Kerosene Grass - Mulka grass - short grassland/forbland of the arid zone
      • 61 Mitchell Grass - saltbush grassland/shrubland of the gibber downs of the arid climate zone
    • Riverine Chenopod Shrublands
      • 377 Copperburr low open shrubland on loam - clay flats and playas, western Brigalow Belt South Bioregion and northern Darling Riverine Plains Bioregion
  • Dry sclerophyll forests (shrub/grass sub-formation)
    • New England Dry Sclerophyll Forests
      • 568 Broad-leaved Stringybark shrub/grass open forest of the New England Tableland Bioregion
      • 530 Nandewar Box - Western New England Blackbutt - Red Stringybark open forest in the Kaputar area of the Nandewar Bioregion
      • 965 Narrow-leaved Peppermint - Mountain Ribbon Gum grassy open forest of the eastern New England Tableland Bioregion
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    • North-west Slopes Dry Sclerophyll Woodlands
      • 506 Black Cypress Pine - White Box - Tumbledown Gum shrubby open forest / woodland mainly in the Mt Kaputar region, Nandewar Bioregion
      • 453 Granite gorge Tumbledown Red Gum - White Cypress Pine - Oleander Wattle low open woodland in the Warialda region
      • 856 Grey Box - Rough-barked Apple shrub/grass open forest of northern parts of the Nandewar Bioregion and New England Tableland Bioregion
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    • Upper Riverina Dry Sclerophyll Forests
      • 338 Blakely's Red Gum - Red Stringybark - Long-leaved Box woodland on Wyangala Granite in the NSW South Western Slopes Bioregion
      • 4152 Central West Tumbledown Gum Grassy Forest
      • 353 Inland Scribbly Gum - Red Stringybark - box - Daviesia latifolia - snow grass open forest on sandy loam soils from acid volcanics in the Boorowa - Young region of the NSW South Western Slopes Bioregio
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  • Dry sclerophyll forests (shrubby sub-formation)
    • Northern Tableland Dry Sclerophyll Forests
      • 609 Black Cypress Pine - Caley's Ironbark - Tumbledown Red Gum shrubby woodland on Mole Granite of the Torrington area of the New England Tableland Bioregion
      • 502 Black Cypress Pine - Orange Gum - Tumbledown Red Gum shrubby woodland on granites of the Nandewar Bioregion and New England Tableland Bioregion
      • 503 Black Cypress Pine - Orange Gum heath shrubland or woodland on granite outcrops of the New England Tableland Bioregion
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    • Southern Tableland Dry Sclerophyll Forests
      • 3739 Monaro Hills Brittle Gum Exposed Forest
      • 3742 Monaro Mountains Snow Gum Shrub Forest
      • 3743 Monaro Ranges Exposed Shrub Forest
    • Western Slopes Dry Sclerophyll Forests
      • 417 Black Cypress Pine - Narrow-leaved Ironbark - red gum +/- White Bloodwood shrubby open forest on hills of the southern Pilliga, Coonabarabran and Garawilla regions, Brigalow Belt South Bioregion
      • 341 Blakely's Red Gum - Red Box - Black Cypress Pine grass/shrub woodland on hills in the Upper Slopes sub-region of the NSW South Western Slopes Bioregion and western South Eastern Highlands Bioregion
      • 325 Blue-leaved Stringybark open forest of the Mudgee region NSW central western slopes
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  • Grasslands
    • Riverine Plain Grasslands
      • 46 Curly Windmill Grass - speargrass - wallaby grass grassland on alluvial clay and loam on the Hay Plain, Riverina Bioregion
      • 165 Derived corkscrew grass grassland/forbland on sandplains and plains in the semi-arid (warm) climate zone
      • 44 Forb-rich Speargrass - Windmill Grass - White Top grassland of the Riverina Bioregion
      • 45 Plains Grass grassland on alluvial mainly clay soils in the Riverina Bioregion and NSW South Western Slopes Bioregion
    • Semi-arid Floodplain Grasslands
      • 43 Mitchell Grass grassland - chenopod low open shrubland on floodplains in the semi-arid (hot) and arid zones
      • 214 Native Millet - Cup Grass grassland of the Darling Riverine Plains Bioregion
      • 49 Partly derived Windmill Grass - copperburr alluvial plains shrubby grassland of the Darling Riverine Plains Bioregion and Brigalow Belt South Bioregion
    • Temperate Montane Grasslands
      • 797 Derived grassland of the South Eastern Highlands Bioregion and South East Corner Bioregion
      • 894 Kangaroo Grass - Purple Wire-grass - Mat-rush - Wallaby Grass - Common Buttons dry tussock grassland in the north-western and Eastern parts of the Southern Tablelands of the South Eastern Highlands Bi
      • 896 Kangaroo Grass - Wallaby Grass - Snow Grass moist tussock grassland in the Monaro and the Southern Tablelands regions of the South Eastern Highlands Bioregion and NSW South Western Slopes Bioregion
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    • Western Slopes Grasslands
      • 710 Bluegrass - Redleg Grass - Common Woodruff clay plain grassland of northern Brigalow Belt South Bioregion
      • 796 Derived grassland of the NSW South Western Slopes
      • 484 Derived tall spear grass grassland on mainly basalt hills of the Liverpool Plains, Liverpool Range and in the upper Hunter Valley (Merriwa district), south-eastern Brigalow Belt South Bioregion
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  • Grassy woodlands
    • Floodplain Transition Woodlands
      • 628 Carbeen +/- Coolabah grassy woodland on floodplain clay loam soil on north-western NSW floodplains, mainly Darling Riverine Plain Bioregion
      • 248 Mixed box eucalypt woodland on low sandy-loam rises on alluvial plains in central western NSW
      • 251 Mixed Eucalypt woodlands of floodplains in the southern-eastern Cobar Peneplain Bioregion
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    • New England Grassy Woodlands
      • 3351 Armidale Creekflat Snow Gum Woodland-Scrub
      • 704 Blakely's Red Gum - Yellow Box grassy open forest or woodland of the New England Tableland Bioregion
      • 510 Blakely's Red Gum - Yellow Box grassy woodland of the New England Tableland Bioregion
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    • Southern Tableland Grassy Woodlands
      • 654 Apple Box - Yellow Box dry grassy woodland of the South Eastern Highlands Bioregion
      • 705 Blakely's Red Gum moist sedgey woodland on flats and drainage lines of the South Eastern Highlands Bioregion and NSW South Western Slopes Bioregion
      • 350 Candlebark - Blakely's Red Gum - Long-leaved Box grassy woodland in the Rye Park to Yass region of the NSW South Western Slopes Bioregion and South Eastern Highland Bioregion
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    • Subalpine Woodlands
      • 1191 Snow Gum - Candle Bark woodland on broad valley flats of the tablelands and slopes, South Eastern Highlands Bioregion
    • Tableland Clay Grassy Woodlands
      • 513 Candlebark - Ribbon Gum grassy woodland of the New England Tableland Bioregion
      • 3341 Monaro-Gourock Frost Hollow Grassy Woodland
      • 534 New England Peppermint grassy woodland on sedimentary or basaltic substrates of the New England Tableland Bioregion
      • 1099 Ribbon Gum - Rough-barked Apple - Yellow Box grassy woodland/open forest of the New England Tableland Bioregion and NSW North Coast Bioregion
    • Western Slopes Grassy Woodlands
      • 283 Apple Box - Blakely's Red Gum moist valley and footslopes grass-forb open forest of the NSW South Western Slopes Bioregion
      • 337 Apple Box - Silver Banksia - Drooping Sheoak open woodland - tall shrubland in protected gullies of the Coolac - Tumut serpentinite belt, NSW South Western Slopes Bioregion.
      • 282 Blakely's Red Gum - White Box - Yellow Box - Black Cypress Pine box grass/shrub woodland on clay loam soils on undulating hills of central NSW South Western Slopes Bioregion
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  • Semi-arid woodlands (shrubby sub-formation)
    • Inland Rocky Hill Woodlands
      • 257 Dwyer's Red Gum - Currawang grassy low woodland of the central western plains of NSW
      • 328 Red Ironbark - Black Cypress Pine shrubby woodland of the NSW South Western Slopes Bioregion
      • 329 Red Ironbark - Red Stringybark - Tumbledown Gum heath low woodland on ridges, central NSW South Western Slopes
      • 334 Tick Bush - Drooping She Oak tall shrubland on granite hills of the NSW central western slopes
      • 332 Tumbledown Red Gum - Black Cypress Pine - Red Stringybark woodland on rocky hills in the NSW central western slopes
    • North-west Alluvial Sand Woodlands
      • 71 Carbeen - White Cypress Pine - River Red Gum - bloodwood tall woodland on sandy loam alluvial and eolian soils in the northern Brigalow Belt South Bioregion and Darling Riverine Plains Bioregion
    • Riverine Sandhill Woodlands
      • 28 White Cypress Pine open woodland of sand plains, prior streams and dunes mainly of the semi-arid (warm) climate zone
      • 23 Yarran tall open shrubland of the sandplains and plains of the semi-arid (warm) and arid climate zones
    • Western Peneplain Woodlands
      • 135 Coobah - Western Rosewood low open tall shrubland or woodland mainly on outwash areas in the Brigalow Belt South Bioregion.
      • 98 Poplar Box - White Cypress Pine - Wilga - Ironwood shrubby woodland on red sandy-loam soils in the Darling Riverine Plains Bioregion and Brigalow Belt South Bioregion
      • 105 Poplar Box grassy woodland on flats mainly in the Cobar Peneplain Bioregion and Murray Darling Depression Bioregion
      • 72 White Cypress Pine - Poplar Box woodland on footslopes and peneplains mainly in the Cobar Peneplain Bioregion