Native to Texas, New Mexico, Mexico and the Southwest. Commonly grown as an ornamental
Humans, dogs, cattle, sheep and goats
Sophora secundiflora - Texas Laurel
The mature foliage and the seeds are most toxic. The seeds contain several toxic quinolizidine alkaloids including cytisine, with N-methylcytisine, anagyrine, and termopsine.
Unless chewed, the seeds passthrough the digestive tract without causing toxicity.
An evergreen shrub to small tree with alternate leathery leaves, pinnately divided with 7-9 leaflets, notched, silky below; flowers pea-like, violet-blue, fragrant. The bright red seeds are produced in a hard, woody pod.
Stress or exercise often induces trembling , stiff gait, falling, and difficulty in rising. Animals recover rapidly if left undisturbed.
1. Kingsbury, John M. 1964. Poisonous plants of the United States and Canada. Englewood Cliffs, NJ: Prentice-Hall, Inc. pp 122.
2. Knauer KW, Reagor JC, Bailey EM Jr, Carriker L. Mescalbean (Sophora secundiflora) toxicity in a dog. Vet Hum Toxicol. 1995;37:237-239.
3. Izaddoost M, Harris BG, Gracy RW. Structure and toxicity of alkaloids and amino acids of Sophora secundiflora. J Pharm Sci. 1976;65:352-354.
Sophora secundiflora leaf and flowers
Sophora secundiflora silvery form
Sophora secundiflora pods