| Acuminate |
Leaf tip, or the apex, that tapers to a point |
| Alternate arrangement |
Leaves are attached to a twig in an alternating pattern |
| Catkins |
A long cluster of small flowers |
| Compound leaf |
A single leaf composed of leaflets attached to a common stalk |
| Crown |
Also known as the canopy, refers to the branches and leaves of a tree |
| Deciduous |
Trees that shed leaves during cold and/or dry periods of the year |
| Dentate margins |
Edges of leaves with "teeth" pointing outward |
| Drupe |
Fleshy fruit with one seed (like a peach or cherry) |
| Elliptic |
Oval-shaped leaf that is widest in the middle and narrow to pointed at each end |
| Entire margin |
Edges of leaves are smooth with no "teeth" |
| Equilateral base |
Right and left sides of the leaf base is symmetrical in size and shape |
| Evergreen |
Trees that maintain their leaves year-round |
| Glabrous |
Smooth; without hairs |
| Inequilateral |
Right and left sides of the leaf base are asymmetrical in size or shape |
| Invasive species |
Non-native species introduced by human activity that causes environmental, economic, and/or human harm |
| Lanceolate |
Leaf is broadest at its base with a narrow tip; it is longer than it is wide |
| Leaflet |
Individual "leaf" blades from a compound leaf attached to a common stalk |
| Leaf scar |
Scar left on the twig where the leaf was attached |
| Lenticels |
Features on the stem of the tree that assist in respiration and often create distinctive textures or patterns on the bark |
| Lobed |
Leaves with rounded or pointed projections that extend out from the middle vein of the leaf |
| Margin |
Edge of a leaf or leaflet |
| Midrib |
The central or middle vein of a leaf or leaflet |
| Native |
A species that naturally occurs in a specific geographic area |
| Non-native |
A species that does not naturally occur in a specific geographic area |
| Opposite arrangement |
A pair of leaves attached to either side of a twig directly across from each other |
| Palmate venation |
Leaf veins that spread out from a single point like fingers from the palm of a hand |
| Panicle |
Flowers that form on branches that extend from a single stem |
| Petiole |
The supporting stalk or stem that connects a leaf to a branch |
| Pinnate venation |
Leaf veins that extend from the middle vein to the leaf edge; veins create a feather-like appearance |
| Pubescent |
Leaves or stems that have fine, short hairs on their surface |
| Pulpwood |
A tree that is harvested and processed into a pulp to make paper |
| Racemes |
Individual flowers that grow on its own stalk and extend from a common stem |
| Riparian |
Transitional zones along rivers and streams, and upland environments |
| Samara |
Seeds with a wing attached |
| Sawtimber |
Trees that are harvested and sawn to make lumber |
| Serrate margins |
Edges of leaves with sharp "teeth" that orient toward the leaf tip; appears saw-like |
| Simple leaves |
A single leaf blade attached to a branch with a visible bud present were leaf meets the branch |
| Stipules |
Small vegetative structures that grow at the base of the petiole |
