Isaacs Ridge species

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7 species

Carduus nutans (Nodding Thistle)

Carduus nutans
Carduus nutans
Carduus nutans

Carduus pycnocephalus (Slender Thistle)

Carduus pycnocephalus
Carduus pycnocephalus
Carduus pycnocephalus

Carduus tenuiflorus (Winged Slender Thistle)

Carduus tenuiflorus
Carduus tenuiflorus
Carduus tenuiflorus

Carthamus lanatus (Saffron Thistle)

Carthamus lanatus
Carthamus lanatus
Carthamus lanatus

Onopordum acanthium (Scotch Thistle)

Onopordum acanthium
Onopordum acanthium
Onopordum acanthium

Silybum marianum (Variegated Thistle)

Silybum marianum
Silybum marianum
Silybum marianum

Xanthium spinosum (Bathurst Burr)

Xanthium spinosum
Xanthium spinosum
Xanthium spinosum
Isaacs Ridge
  • Area (hectares) 349.78 ha
  • Survey Effort Score (SES) 6.45 sightings per ha

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Conservation level

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Invasiveness

  • Noxious or High Risk Weed or Pest (change?)

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2,159,033 sightings of 20,011 species in 6,562 locations from 11,696 contributors
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We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.