Plants on limestone hillside. *To protect this small rare western population of the species, already nearly extirpated by unscrupulous collectors, a specific location is not provided but may be obtained for academic purposes by e-mail inquiry to address given below
Plants on low hillside of platy limestone. To protect this small and rare western population of the species, a location is not provide here but may be obtained for academic purposes by e-mail as given below
Plants on low hillside of platy limestone. To protect this small population of a rare western population of the species, a specific location is not provided but may be obtained for academic purposes by e-mail inquiry to address given below
Plants on low hillside of platy limestone. To protect this small population of a rare western population of the species, a specific location is not provided but may be obtained for academic purposes by e-mail inquiry to address given below
Plants on low hillside of platy limestone. To protect this small population of a rare western population of the species, a specific location is not provided but may be obtained for academic purposes by e-mail inquiry to address given below
Plants on low hillside of platy limestone. To protect this small population of a rare western population of the species, a specific location is not provided but may be obtained for academic purposes by e-mail inquiry to address given below
hillside with calcareous gravels on over white blocky limestone outcrops with an exceptionally rich and diverse flora less than 100 yards east of Coahuila state line.