Fungi
Fungal galls, other rusts, leaf spots, etc
Other rusts, leaf spots, sooty moulds

Other rusts, leaf spots, sooty moulds

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Other rusts, leaf spots, sooty moulds

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Discussion

Mike wrote:
5 Jun 2025
Discoloration is gum exudate dripping down and onto the ground.
Pinus radiata
MichaelMulvaney wrote:
5 Jun 2025
Thanks Ken - much appreciated
Pinus radiata
KenT wrote:
5 Jun 2025
I don't know what this is, Diplodia sapinea is not a rust it is in the family Botryosphaeriaceae (Ascomycota). Diplodia sapinea produces blue staining of the timber (under the bark), the image here appears to show superficial colouration on the bark surface that may or not be associated with a gum exudate. Examination under a microscope may show if there is a microorganism involved. There is a recent paper on Diplodia sapinea here: Wingfield, M.J., Slippers, B., Barnes, I. et al. The Pine Pathogen Diplodia sapinea: Expanding Frontiers. Curr. For. Rep. 11, 2 (2025). https://doi.org/10.1007/s40725-024-00236-2
Pinus radiata
MichaelMulvaney wrote:
5 Jun 2025
The only other ACT electronic records are two 1998 records from Pierces Creek
Pinus radiata
MichaelMulvaney wrote:
5 Jun 2025
This rust fungus seems well established in Australia so unsure whether this is one that ACT Forestry want to know about. @ACTBiosecurity
Pinus radiata

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Pinus radiata

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