1
| 1
Pinus arizonica
- Tree
Growing on the lower slopes of Mount Lemmon, Santa Catalina Mountains.
Arizona
|
2
| 2
Pinus arizonica
- Tree
Chiricahua National Monument.
Southeastern Arizona
|
3
| 3
Pinus arizonica
- Cones and foliage
From tree in Chiricahua National Monument.
Arizona
|
4
| 4
Pinus ponderosa brachyptera
- Tree
Zion National Park.
Utah
|
5
| 5
Pinus ponderosa brachyptera
- Scenery
Zion National Park.
Utah
|
6
| 6
Pinus ponderosa brachyptera
- Bark
North Rim of Grand Canyon National Park.
Arizona.
|
7
| 7
Pinus arizonica & Pinus ponderosa brachyptera
- Cones
Pinus arizonica (left) and Pinus ponderosa subspecies brachyptera (right).
A study has been made of the Pinus ponderosa/arizonica of Mount Lemmon, in Arizona. The trees at lower elevations have needles in groups of 5, whereas the pines at upper elevations have needles in groups of 3. In the middle elevations the needles are in groups of 3, 4 and 5, suggesting hybrization between the upper elevation trees and the lower elevation trees. The ponderosa of the upper elevations appear to be of older origin than the lower elevation trees.
Mount Lemmon, Santa Catalina Mountains.
Arizona
|
8
| 8
Pinus engelmannii
- Tree
Chiricahua Mountains.
Southeastern Arizona
|
9
| 9
Pinus engelmannii
- Trees
Chiricahua Mountains.
Southeastern Arizona
|
10
| 10
Pinus engelmannii
- Seedling
Chiricahua Mountains.
Southeastern Arizona
|
11
| 11
Pinus engelmannii
- Cone and needles
Chiricahua Mountains.
Southeastern Arizona
|
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