Photo Gallery

P. pluvialis on Pinus radiata in New Zealand A stand of Pinus radiata trees affected by red needle cast disease. Note that frequently only the lower part of the crown is affected.	P. pluvialis - appearance of new growth Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation.	P. pluvialis sporangium Sporangium showing typical ovoid shape and semi-papillate condition
P. pluvialis hyphal swellings P. pluvialis hyphal swellings in water	P. pluvialis symptoms on Douglas-fir needles Symptoms of red needle cast on Douglas-fir needles	P. pluvialis oogonium and antheridium Oogonium and oospore with amphigynous antheridium
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015	P. pluvialis sporangia. P. pluvialis sporangia on tape peel from infected Douglas-fir needle.	P. pluvialis on Pinus radiata in New Zealand Lesions consistent with the presence of red needle cast disease are more abundant at the base of Pinus radiata needles as indicated by the arrow.
P. pluvialis sporangium Sporangia showing typical ovoid shape and semi-papillate condition	P. pluvialis on Pinus radiata in New Zealand Pinus radiata needles showing colour changes following infection with red needle cast disease. The tissues around the initial infection at the base or along the needle senesce, and change yellow and then brown as indicated by the arrows before the needles cast.	P. pluvialis on Pinus radiata in New Zealand A Pinus radiata needle showing faded olive- or khaki- coloured lesions consistent with the presence of red needle cast disease. Arrow shows resinous bands within the extended olive lesion.