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Fireweed or Cutleaf Burnweed (Senecio glomeratus [syn. Erechtites glomeratus]), an annual or perennial with silvery stems, light green foliage and pale undersides, sometime purple-tinted. The flowerheads are petalless. Originally native to Australia and New Zealand, it is now naturalised in the western United States. Photographed in late autumn, this example is showing signs of poplar rust, which overwinters on small. Senecio species. senecio-3303htm'>Senecio.
![Fireweed or Cutleaf Burnweed (<i>Senecio glomeratus [syn. Erechtites glomeratus]), an annual or perennial with silvery stems, light green foliage and pale undersides, sometime purple-tinted. The flowerheads are petalless. Originally native to Australia and New Zealand, it is now naturalised in the western United States. Photographed in late autumn, this example is showing signs of poplar rust, which overwinters on small. Senecio species. senecio-3303htm'>Senecio.](./data/media/1/CFGax57.jpg "Fireweed or Cutleaf Burnweed (<i>Senecio glomeratus [syn. Erechtites glomeratus]), an annual or perennial with silvery stems, light green foliage and pale undersides, sometime purple-tinted. The flowerheads are petalless. Originally native to Australia and New Zealand, it is now naturalised in the western United States. Photographed in late autumn, this example is showing signs of poplar rust, which overwinters on small. Senecio species. senecio-3303htm'>Senecio.")