''Haplophyton crooksii'' is a plant species native to

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, and northern

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. It is an herb up to 60 cm tall, with showy yellow flowers, found on rocky slopes in desert scrub and desert grassland.L.D. Benson. 1943. American Journal of Botany 30(8): 630. 1943.McLaughliln, S.P. 1993. Apocynaceae A.L. Juss., Dogbane Family. Journal of the Arizona-Nevada Academy of Science 27:164-168. The plant is commonly called the cockroach plant (or ''hierba de la cucaracha'') because of its insecticidal properties.

References

Rauvolfioideae Flora of Chihuahua (state) Flora of Sonora Flora of Mexico Flora of New Mexico Flora of Arizona Flora of Texas {{Apocynaceae-stub