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CENTER for BIOLOGICAL DIVERSITY Because life is good
ABOUT ACTION PROGRAMS SPECIES NEWSROOM PUBLICATIONS SUPPORT

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ENDANGERED SPECIES ACT PROFILE

PROTECTION STATUS: Endangered

YEAR PLACED ON LIST: 1997

CRITICAL HABITAT: 83.2 kilometers of streams and rivers in Arizona’s Cochise and Santa Cruz counties designated in 1999

RECOVERY PLAN: None

RANGE: The San Pedro River, Santa Cruz River, Rio Yaqui, and Rio Sonora

THREATS: Destruction, modification, or curtailment of habitat resulting from wetland degradation and loss, groundwater pumping and growing water demand, livestock grazing, wood cutting, mining, fire suppression, water diversion, dredging, rural and urban development, and recreation; as well as nonnative plant invasion

POPULATION TREND: The plant has been extirpated from six of 26 sites in its historical range. Individual plant numbers are difficult to determine.

Photo © Greta Anderson