Hiker's Guide to the Trees, Shrubs
and Vines of Ricketts Glen State Park


Acraspis quercushirta - Chestnut Oak Leaf Gall
Amphibolips cookii - Red-Black Oak "Apple" Gall
Hemadas nubilipennis - Blueberry Stem Gall
Hormaphis hamamelidis - Witch Hazel Cone Gall
Cryptococcus fagisuga - Woolly Beech Scale
Desmocerus palliatus - Elderberry Borer
Dryocosmus imbricariae - Red-Banded Bullet Gall
Grylloprociphilus imbricator - Beech Blight Aphid
Neolasioptera nodulosa - Blackberry Gall Midge
Pineus similis - Ragged Spruce Gall Adelgid
Pontania sp. - Willow Sawfly Gall
Pterourus troilus - Spicebush Swallowtail
Larvae feed on members of the Lauraceae,
such as Sassafras albidum.

Eriophyes nyssae - Black Gum Leaf Gall
Eriophyidae - Birch Velvet Leaf Gall
Phytoptus tiliae - Basswood Leaf Gall
Acalitus fagerinea- Beech Velvet Leaf Gall

Epifagus virginiana - Beech Drops
Parasitic on roots of Fagus grandifolia.

Monotropa uniflora - Indian Pipe
Mutualistic with conifer mycorrhizal fungi.

Aleurodiscus oakesii - Smooth Patch of White Oak
Apiosporina morbosa - Black Knot of Cherry
Armillaria mellea - Shoestring Rot
Cercospora kalmiae - Mountain Laurel Leaf Spot
Cryphonectria parasitica - Chestnut Blight
Dendrothele macrodens - Smooth Patch of Ash
Fomes fomentarius - White Rot of Beech
Ganoderma tsugae - White Rot of Hemlock
Inonotus obliquus - Birch Stem Canker
Neonectria faginata - Beech Bark Disease
Oxyporus populinus - White Rot of Living Trees
Scorias spongiosa - Beech Black Soot
Trichaptum abietinum - White Rot of Conifers

Updated 14 May 2020.