Nature conservation

Threatened species

Sand-hill Spider Orchid - Riverina: Distribution and vegetation associations

Scientific name: Caladenia arenaria
Conservation status in NSW: Endangered
Commonwealth status: Endangered
Last updated: 07 Jun 2022

Distribution of the species within this region

The Sand-hill Spider Orchid is known or predicted to occur in the following sub-regions of the Riverina Interim Biogeographic Regionalisation of Australia Region.

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IBRA sub-region  Known or predictedGeographic restrictions within region
Murrumbidgee Known East of Jerilderie

Vegetation formations, classes and types

In this region the Sand-hill Spider Orchid - Riverina is known to be associated with the following vegetation formations and classes. Click on a name to get background information about it.

  • Grassy woodlands
    • Floodplain Transition Woodlands
      • 80 Western Grey Box - White Cypress Pine tall woodland on loam soil on alluvial plains of NSW South Western Slopes Bioregion and Riverina Bioregion
      • 76 Western Grey Box tall grassy woodland on alluvial loam and clay soils in the NSW South Western Slopes and Riverina Bioregions
  • Semi-arid woodlands (shrubby sub-formation)
    • Riverine Sandhill Woodlands
      • 28 White Cypress Pine open woodland of sand plains, prior streams and dunes mainly of the semi-arid (warm) climate zone
      • 75 Yellow Box - White Cypress Pine grassy woodland on deep sandy-loam alluvial soils of the eastern Riverina Bioregion and western NSW South Western Slopes Bioregion