My Colby-Sawyer Experience

“My students are always kind of surprised to learn about what they have missed, what they haven't been paying attention to all their lives.”
Natural Sciences Professor Laura Alexander

175th Celebration

In 2012 the college celebrated 175 years as an institution of teaching and learning. Visit the 175th website for more information and to view photos of the events.

Carnegia gigantea

Height: 30' to 50'

Stem: 2 1/2' in diameter. They have a green and treelike trunk with 12 to 30 ribs. As they mature they grow branches up to 20" in diameter. The spines are 3" long and in a cluster of 15 to 30.

Flowers/Fruit: In bloom May to June. The flowers are white and funnel shaped. It is 3" wide at the top. They bloom at the top of the trunk and arms in clusters. They only open at night and once annualy. The fruit is fleshy, green and egg shape 3" long.

Form/Habitat: Found in the rocky slopes and well drained flats. Their range is only in southern Arizona

Click here to return to the Desert Herbarium Home Page.