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Frailea grahliana (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Frailea grahliana" in German language version.

refsWebsite
Global rank German rank
2biodiversitylibrary.org
387th place
297th place

biodiversitylibrary.org

  • K. Schumann: Echinocactus Grahlianus F. Hge. jun. und seine Verwandten. In: Monatsschrift für Kakteenkunde. Band 9, Nr. 4, 1899, S. 54 (online).
  • N. L. Britton, J. N. Rose: The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family. Band III. The Carnegie Institution of Washington, Washington 1922, S. 209 (online).