Forestry ID Quiz

subalpine fir

Abies lasiocarpa. resin blisters on bark, spores, soft needles

white fir (extra credit)

Abies concolor. flat, upward needles

pinon pine

pinus edulis. 2-fascicle. edible seeds. round crown

bristlecone pine

Pinus aristata. white resin flecks

ponderosa pine

Pinus ponderosa. 3 needles

lodgepole pine

Pinus contorta. cones in 2s. 2/fascicle, twisted

limber pine

Pinus flexilis. 5/fascicle, stomata rows

colorado blue spruce

Picea pungens. 4 sided needles

Douglas fir

Pseudotsuga menziesii. 3-pronged cones

rocky mountain juniper

Juniperus scopulorum. berry-like cones

Engelmann spruce (extra credit)

Picea engelmannii. leaf is like claw foot. papery thin cone

quaking aspen

Populus tremuloides. deltoid (triangle) leaf, cotton-like fruit

plains cottonwood

Populus deltoides. glossy leaf

narrow leaf cottonwood (extra credit)

Populus angustifolia. fruit string of capsules

American elm

Ulmus Americana. leaf veins on back. seed papery samara/wing

willow

Salix spp. seed hairy

green ash

Fraxinus pennsylvanica. fruit helicopters

Russian olive

Elaeagnus angustifolia. silvery leaves, fruit olives

Gambel oak

Quercus gambelii. leaves lobed, hairy under. fuzzy acorn

honeylocust

Gleditsia triacanthos. large pod with seeds inside. thorns

hackberry

Celtis occidentalis. fruit berry-like

American plum

Prunus americana. leaf dark top pale bottom, leathery. fruit is plum

Boxelder

Acer negundo. 5 leaflets. purple twigs. seeds are helicopters

silver maple (extra credit)

Acer saccharinum. leaves 5-lobed. seeds helicopters