Collected
16 August 1990.
Tamaulipas, Mexico
Locality: Inland slope near crest of Sierra Madre Oriental along Hwy 101, 24.9 mi. SW jct. Hwy 85 at Cd. Victoria.
Environment description: Open oak woodland with Calliandra sp., Senna lindheimeriana, Dalea bicolor var. argyrea, Dalea sp., Mimosa martindelcampoi, Sophora secundiflora, Galphimia aurea, Jatropha dioica, Hechtia glomerata, Agave lophantha, grasses.
Number of plants sampled: 3