Photos
Infected 25 year old sugar pine
| Title: | Infected 25 year old sugar pine |
|---|---|
| Description: | 'Cryptic' white pine blister rust infection on the bole of a 25 year old sugar pine at BLM's Boulder Creek progeny test site in southwestern Oregon. Note the production of small amounts of orange aecia in the cracks of the bark in early July 2008; note also the lack of obvious stem swelling on the lower bole of this tree where the infection has likely been present for a decade or more. |
| Photographer: | Richard Sniezko |
