In scrub oakberberidifolia) and Nuttall’s scrub oak (Q. dumosa), an endangered species that grows as an evergreen shrub about 2.5 meters (8 feet) tall, with leaves 2.5 cm (1 inch) long. The Rocky Mountain scrub oak, or Gambel oak (Q. gambelii), grows up to 9 meters (30 feet) tall.
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