English: Spines grown in series on a ~1m tall saguaro cactus in Tucson, Arizona. Red tape is affixed to the primary central spine of each areole. The numbers written on the cactus in black ink denote the order that the spines grew - youngest towards the apex, oldest towards the base. The marked spines probably grew the year previous to the picture (2005).
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{{Information |Description = Spines grown in series on a saguaro |Source = I (~~~) created this work entirely by myself. |Date = August 8, 2006 |Author = ~~~ |other_versions = }}
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