The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
References
- Isotype: Gray, A. 1853. Smithsonian Contr. Knowl. 5 (6): 54.
- Kearney, T. H. & R. H. Peebles. 1960. Arizona Fl. (ed. 2) 1032 pp.
- SPECIMEN BASED RECORD. Published protolog data.
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