desert ironwood Fabaceae Olneya
tesota A. Gray
|Leaf: Alternate, evergreen, pinnately compound, 6 to 9 pairs of obovate leaflets, entire leaf 2 to 3 inches long, gray-green and finely hairy.
Flower: Pea-shaped, 1/2 inch long pink to light purple flowers, 5 petals, appears in late spring in small clusters.
Fruit: Two to 3 inch long brown legume, swollen at seeds, finely hairy, matures in late summer.
Twig: Slender, green (later gray-brown), with a pair of slender sharp spines at base of leaves.
Bark: Initially smooth and light gray-brown, later becoming darker, browner and shreddy, often there are distinct transitions between smooth and rough areas.
Form: A small tree (up to 30 feet) with a short trunk (often several trunks) and wide spreading crown.
Looks like: honey mesquite
- screwbean mesquite
- catclaw acacia
- desert smoke tree
| Additional Range Information:
Olneya tesota is native to North America.
Range may be expanded by planting.
See states reporting desert ironwood.
| External Links:
USDA Plants Database
|© Copyright 2016, Virginia Tech|
Dept. of Forest Resources
and Environmental Conservation,
all rights reserved.
Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson