All photographs copyright (2003-2013) by Kris H. Light

Cactus spines
Opuntia sp.<br>
The long white spines are not what cause the problems for the unwary hiker, it's the tiny brown <em>glochids</em> that stick into the skin and cause so much pain.
Cactus spines Opuntia sp.
The long white spines are not what cause the problems for the unwary hiker, it's the tiny brown glochids that stick into the skin and cause so much pain.

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