CATS New Mexico Tree Identification 2

Question 1

Which conifer native to New Mexico's high-elevation forests produces cones that open and close in response to moisture levels?

Accepted Answer

Engelmann spruce

Answer

Engelmann spruce (Picea engelmannii) cones are hygroscopic and open in dry conditions and close when wet, a key identification trait.

Question 2

The narrowleaf cottonwood (Populus angustifolia) differs from Fremont cottonwood most noticeably by its:

Accepted Answer

Leaf shape — much narrower with fine teeth

Answer

Narrowleaf cottonwood has willow-like, lance-shaped leaves that are far narrower than the broad triangular leaves of Fremont cottonwood.

Question 3

Which oak species found in New Mexico's Chihuahuan Desert foothills is semi-evergreen and often grows as a shrubby thicket?

Accepted Answer

Gray oak

Answer

Gray oak (Quercus grisea) is semi-evergreen, drought-adapted, and commonly forms dense brushy stands in southern New Mexico's desert grasslands.

Question 4

A large Southwestern tree with corky, deeply furrowed bark, pinnately compound leaves, and hanging clusters of papery winged seeds is most likely:

Accepted Answer

Boxelder

Answer

Boxelder (Acer negundo) has pinnately compound leaves — unusual for a maple — and produces paired samaras in drooping clusters.

Question 5

Which pinyon species is dominant in the Two Grey Hills and Chaco Canyon areas of northwestern New Mexico?

Accepted Answer

Colorado pinyon

Answer

Colorado pinyon (Pinus edulis) with its paired needles dominates the pinyon-juniper woodlands across northwestern New Mexico including the Chaco region.

(CATS) Certified Arborist Tree Service of Albuquerque Practice Test

(CATS) Certified Arborist Tree Service of Albuquerque Practice Test

CATS New Mexico Tree Identification 2