*[http://pfaf.org/user/Plant.aspx?LatinName=Umbilicus%20rupestris Plants for a future]
*[http://www.prota4u.org/protav8.asp?p=Umbilicus%20rupestris Prota4U]
*[http://www.sierradebaza.org/principal_12-03/notic1_12-03.htm Sierra de Baza (Espagne)]
*[http://www.wikiphyto.org/wiki/Umbilicus%20rupestris Wikiphyto]