Arizona Naturalists >>> Ponderosa Woodland Flora >>> Fagaceae >>> Quercus gambelii

Gambel's Oak

Quercus gambelii

Gambel's Oak, Quercus gambelii, photo © by Mike Plagens

Observed on Pinal Peak, Gila Co., Arizona, USA. 23 Sept 2012.

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LEAVES: Winter deciduous, simple leaves have margins with several broad, rounded lobes. Oaks often represent hybrids between recognized species and as such the explorer will find wide variation in leaf texture, shape and pubescence. Leaves can be thicker and darker green in some plants. This can be the result of genetic mixing or else local environmental influences. Trees growing in hotter exposed locations can have smaller, thicker leaves, for example.

TREE: In Arizona's montane habitats Gambel's Oak is a medium to large tree. The champion Gambel's Oak growing in Arizona's Coconino National Forest is almost 32 meters.

FLOWERS: Small flowers without petals are borne early in spring in short spikes of many flowers. Flower usu. before leaves emerge fully.

RANGE: Found as a frequent component of open woodlands, more commn and reaching larger proportions on moister sites. Less frequent after periodic fires.

FRUIT: Acorns with a deep cups enclusing nut about ½ way.

UNARMED. No spines or thorns.

Fagaceae -- Oak Family

More Information:

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Arizona Naturalist
Arizona's Ponderosa Woodlands
The Flora of Arizona's Ponderosa Woodlands


Copyright Michael J. Plagens, page created 21 Sept. 2012