BOOJUM

Idria columnaris: age as determined by growth rate

Author
R.R. Humphrey and A.B. Humphrey
Article Date
1990
Article Abstract
A process for determining age of boojum trees from rate-of-growth measurements is described. "The age estimate...can be obtained by multiplying the inverse growth rate by the height of the plant." Tabular data
Language
English
Journal Title
Desert Plants
Journal Volume
10
Journal Issue
2
Page Number(s)
51-54
Subject Headings
BOOJUM
Object type
Article
Rights
Submit a duplications request to Special Collections for this material: https://speccoll.library.arizona.edu/duplications

Ho, Ho, a boojum, definitely a boojum!

Author
R. Humphrey
Article Date
Autumn 1989
Article Abstract
The author, professor emeritus at the UofA, began his extensive research on the boojum only after his retirement in 1966. He recounts his fascinating experiences of the next five years as he studied the plants in Sonora. Numerous photographs of the Idria columnaris
Language
English
Journal Title
J of the Southwest
Journal Volume
31
Journal Issue
3
Page Number(s)
378-415
Subject Headings
BOOJUM
Object type
Article
Rights
Submit a duplications request to Special Collections for this material: https://speccoll.library.arizona.edu/duplications
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