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Survey results for San Diego thornmint at Sabre Springs, Black Mountain Ranch, Mission Trails, Penasquitos Canyon Preserve in 2003.

Survey results for San Diego thornmint at Sabre Springs, Black Mountain Ranch, Mission Trails, Penasquitos Canyon Preserve in 2004.

Introduction: San Diego thornmint (Acanthomintha ilicifolia) is an endangered plant species that is found in clay soils within the County of San Diego. It is an annual herb that blooms between April and June. Monitoring for this plant in Penasquitos Canyon, Black Mountain Ranch, and Sabre Springs was conducted on May 3, 2000 by Holly Boessow, Keith Greer, Cindy Burrascano, Mike Kelly, and Pat Watkins. The surveys within Sabre Springs were completed by Mike Kelly on May 6, 2000. The methodology and results of the monitoring are detailed below. The goal of the effort was to establish baseline data for long-term monitoring of San Diego thornmint under the Multiple Species Conservation Program (MSCP). Previous surveys in Penasquitos Canyon and Black Mountain Ranch have been completed by Mike Kelly (see attached). Additional surveys in Penasquitos Canyon and Sabre Springs were also conducted by Ogden Environmental (1993).