Echinocereus x roetteri (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Echinocereus x roetteri" in Spanish language version.

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Global rank Spanish rank

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biodiversityheritagelibrary.org

Cactaceae of the Boundary. In: United States and Mexican Boundary Survey, under the Order of Lietu. Col. W. H. Emory, Major first Cavalry, and United States Commissioner. Band 2, Teil 1, Cornelius Wendell, Washington 1859, S. 33, Tafel 41 (online) Archivado el 2 de abril de 2015 en Wayback Machine..

Cactaceae of the Boundary. In: United States and Mexican Boundary Survey, under the Order of Lietu. Col. W. H. Emory, Major first Cavalry, and United States Commissioner. Band 2, Teil 1, Cornelius Wendell, Washington 1859, S. 33, Tafel 41 (online) Archivado el 2 de abril de 2015 en Wayback Machine..