Scientific Names
Leaves
Bark
Seeds
Cones
100

This is the scientific name for plains cottonwood.

What is Populus deltoides?

100

Tree with single, opposite, deltoid leaves.

What is quaking aspen (Populus tremuloides)?

100

This trees bark smells like butterscotch.

What is ponderosa pine (Pinus ponderosa)?

100

This tree has blue, round berry-like cones.

What is Rocky Mountain juniper (Juniperus scopulorum)

100

This tree has cones that are armed, asymmetrical, and serotinous.

What is lodgepole pine (Pinus contorta)?

200

The scientific name for Gambel oak.

What is Quercus gambelii?

200

This tree can be distinguished by its white resin flakes on the needles.

What is bristlecone pine (Pinus aristata)?

200

A tree with corked warts and gray bark.

What is hackberry (Celtis occidentalis)?

200

Tree with seeds in a large pod.

What is honeylocust (Gleditsia triacanthos)?

200

This trees cones have 3-pronged bract that extend from under each scale.

What is Douglas-fir (Pseudotsuga menziesii)?

300

Scientific name for Russian olive.

What is Elaeagnus angustifolia?

300

This tree has parallel veins evident on back of leaf, the leaf base is unequal 

What is American elm (Ulmus americana)?

300

This trees bark contains salicin (similar to asprin)

What is willow species (Salix sp.)?

300

This tree has large, fleshy berries.

What is American plum (Prunus americana)?

300

This tree has cones that are purple-olive green, which fall apart at maturity.

What is white fir (Abies concolor)?

400

The scientific name for green ash.

What is Fraxinus pennsylvannica?

400

These trees needles are shaped like a catcher's mitt.

What is piñon pine (Pinus edulis)?

400

This tree looks like it has eyes.

What is quaking aspen (Populus tremuloides)?

400

Daily Double

Colorado's state tree!

What is blue spruce (Picea pungens)?

400

This tree has cones that are small, about 2” and large wingless seeds.

What is piñon pine (Pinus edulis)?

500

This is the scientific name for subalpine fir.

What is Abies lasiocarpa?

500

This tree has pinnately compound, opposite leaves with 5 leaflets which resembles poison ivy. 

What is boxelder (Acer negundo)?

500

This tree has smooth, grayish-white bark with resin blisters

What is subalpine fir (Abies lasiocarpa)?

500

This tree has fruit that is a flat samara with a circular papery wing surrounding the single 4–5 mm seed.

What is the American elm (Ulmus americana)?

500

This tree has cones that are 3-6” long, are armed and the base left on twig

What is ponderosa pine (Pinus ponderosa)?

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