A barbed bristle on the areole of some cacti.
- The spines grow from an areole covered with glochids, which are tiny, barbed spines characteristic of all Opuntia.
- After you have removed the glochids you can eat the fruit fresh, or prepare it in several ways.
- This is a highly magnified photograph of a glochid taken with a scanning electron microscope.
Late 19th century: from Greek glōkhis, glōkhid- 'arrowhead'.
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