Friday, March 6, 2009
Phomopsis gall on bitternut hickory limb
Here's an update about those warty looking tree "tumors" I wrote about in my February 24 post. According to Moreau Park staffer Dave Alfred, the trees were all bitternut hickory. There were about 20 hickories showing these growths in that particular low-lying area, and no other tree species nearby appeared to be affected. Dave shared this information with Casey Holzworth, regional biologist with the NYS Office of Parks, Recreation, and Historic Preservation. This is what Casey reported:
[These growths] appear to be phomopsis galls on hickory. It's a relatively common gall in hickory and some other species caused by some species of phomopsis fungus. It will harm the vigor of the tree, but that's more of a concern for cultivators of some of the other species that this fungus can impact. [Moreau Lake] Park staff will keep an eye on it.
So now we know that it's just a fungus among us. Not some alien invasion. Phew!