The pollen grains, in most orchids, are aggregated into packets containing thousands of pollen grains and usually are removed as a unit. (see photo top right)

Some self-pollinating orchid's pollinia lack coherence and readily break into fragments.  (see photo bottom right)

All species of Arachnorchis have a pair of yellow waxy glands at the base of the column.  (see photo bottom left)


There is speculation that these represent anthers to attract pollen seeking insects while an alternative thought is that they are remnants of a pollination strategy gone wrong.

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