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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
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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
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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
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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
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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
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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
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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.