Collected
31 March 1993.
Sonora, Mexico
Locality: Ca. 3 mi. N of Bah a de Kino along road to Punta Chueca. Elevation ca. 30 m.
Environment description: Gulf Coast Subdivision Sonoran Desertscrub. Sandy soil of level valley between mountains. Larrea divaricata subsp. tridentata, Jatropha cinerea, J. cuneata, Bursera microphylla, Vizcainoa geniculata, Melilochia tomentosa, Marina parryi.
Number of plants sampled: 6