28 August 1995.
Querétaro, Mexico
Locality: At km 18, N of Queretaro (city) about 100 m E of Mex 57.
Coordinates: 20.8037, -100.4445
(Map it)
Elevation: 2100m.
Environment description: Zone of Bursera, Jatropha dioica, minosoid scrub, and large candelabran cactus. W and SE facing slopes and ledges of lava rocks.
Collector(s):