The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
References
- Abrams, L. 1951. Geraniums to Figworts. 3: 866 pp. In L. Abrams Ill. Fl. Pacific States. Stanford University Press, Stanford.
- CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.
- Holotype: Griffiths, D. 1908. Annual Rep. Missouri Bot. Gard. 19: 261.
- Holotype: Griffiths, D. 1911. Annual Rep. Missouri Bot. Gard. 22: 27.
- Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
- SPECIMEN BASED RECORD. Published protolog data.
- Shreve, F. & I. L. Wiggins. 1964. Veg. Fl. Sonoran Des. 2 vols. Stanford University Press, Stanford.
- Véliz Pérez, M. E. 2008. Cactáceas Guatemala 1–129. Univ. de San Carlos de Guatemala, Guatemala.
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