Trees

The old growth forest on Mt. Graham (Pinaleno Mountains) of eastern Arizona is comprised of forest patches rather than being homogeneous in composition. These patches reflect the heterogeneity of...

Type of Content: Reports, Papers, Journal Articles

Devil’s Canyon is located in Pinal County Arizona a few miles east of Superior in the Globe Ranger District of the Tonto National Forest. The area is extremely rugged with deep canyons, rocky...

Type of Content: Reports, Papers, Journal Articles

Devil’s Canyon is located in Pinal County Arizona approximately 6 km east of the town of Superior in the Globe Ranger District of the Tonto National Forest. The area is generally rugged with deep...

Type of Content: Reports, Papers, Journal Articles
Saguaro flowers and buds
Type of Content: Image Content
  • Bursera microphylla leaves

This is a more desert adapted Bursera. Most Sonoran Burseras grow in thornscrub or tropical deciduous forest where there are prolonged periods without rain, but there is always a reliable growing...

Type of Content: Species Profile
Saguaro flowers and buds
Type of Content: Image Content
  • Quercus macvaughii leaf underside

This oak has large stiff leaves with a fuzzy underside that usually has an brown or orangish hue.

Type of Content: Species Profile
  • Quercus tarahumara trunk

This oak has very large leaves relative to other oaks in our region. Its current northward known limit is in the Sierra Bacadéhuachi. It is common in the Sierra Madre as one goes southward.

Type of Content: Species Profile
  • Sideroxylon occidentale, bebelama - foliage

Large shrub or tree with leaves and growth form that look similar to Lycium or Condalia, but can grow much larger. Bebelama has spine-tipped branches and acquires furrowed bark at a fairly young...

Type of Content: Species Profile

About 1,500 collections from within 100 kilometers of the Arizona border in Sonora yielded noteworthy records for 164 plants including 44 new species (12 non-native) for Sonora and 12 (six non-...

Type of Content: Reports, Papers, Journal Articles

Presently, the flora of the Sierra de Mazatán contains 357 species of vascular plants distributed in 248 genera and 80 families. The families with the most species are Asteraceae (48), Fabaceae (...

Type of Content: Reports, Papers, Journal Articles
  • Bursera lancifolia leaf

A thorn-scrub and TDF species similar to Bursera fagaroides, but seems to be slightly more sensitive to frost and/or dry conditions. This species has longer lanceolate leaves with teeth along the...

Type of Content: Species Profile
  • Quercus emoryi

Emory oak is widespread in the lower oak zone of southern Arizona, but disappears as one heads south in Sonora. It often shares slopes with Q. oblongifolia. Q. emoryi wood is very dense and makes...

Type of Content: Species Profile
  • Quercus viminea

Willow-leaf oak is closely related to emory oak, but the leaves are generally shinier, slimmer, much longer, and brighter green. Branch tips are generally less robust than emory oak. There is...

Type of Content: Species Profile
  • Quercus tuberculata leaves
Type of Content: Species Profile
  • Acacia occidentalis

This large Acasia grows primarily along xeroriparian washes subtropical Sonora and southern Sonoran Desert. Its appearance is very similar to Acacia greggii, but often grows much larger with finer...

Type of Content: Species Profile
  • Populus tremuloides (quaking aspen) trunks
Type of Content: Species Profile
  • Abies concolor (white fir) needles

The white fir is the most widespread true fir in the Sky Islands. There are only 3 recorded localities in Sonora, 2 being from the first half of the 1900's. Known in the Sierra de los Ajos and...

Type of Content: Species Profile
  • Abies lasiocarpa (corkbark fir) needles

In our Sky Island region corkbark fir is know only from Mt. Graham and the Santa Catalina mountains, its southernmost range extent. In this region Abies lasiocarpa is threatened and is susceptible...

Type of Content: Species Profile

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