Link to English Wikipedia entry: Hercules' Club Puya
Link to German Wikipedia: Puya clava-herculis
Link to French Wikipedia: Puya
Link to eol.org: Puya clava-herculis
Links to my pictures: Hercules' Club Puya
Binomial Links for Puya clava-herculis on aerobaticsweb.org
Dr. Günther Eichhorn Travel Website
Soaring website