Catkin
Distinguishing Features: Small sticky buds, fruit is a small dry capsule
Distinguishing Features: Nuts in a papery sheath, young twigs and leaf stems slightly fuzzy, large male catkins in the spring
Distinguishing Features: Fruit clusters look like hops, bark is ropy and knotted on older trees
Distinguishing Features: Bristle-like teeth along edges, young leaves are fuzzy
Distinguishing Features: Large sticky buds, seeds have white cottony fibers
Distinguishing Features: Creamy orange shedding bark, male catkins grouped in threes, shiny leaves with large and small teeth
Distinguishing Features: Seeds are hanging clusters of nutlets with narrow, papery wings, buds curve toward the stem
Distinguishing Features: Seeds are hanging clusters of nutlets with wide, papery wings, buds are tiny and pointed
Distinguishing Features: Shallow lobes, very dark bark and large acorns