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

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ke ...

Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...

, and northern

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

. 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