Phalaenopsis Column Before & After Pollination
 

These photos show how the reproductive structure of a Phalaenopsis hybrid changes after it has been pollinated.

Before: The structure (circled in red) is wide open, ready to receive pollen.
http://farm8.staticflickr.com/7070/1...d858a2afd6.jpg

After: A few days after pollination, the structure closes tightly, its color becomes more yellow, and it begins to swell.
http://farm8.staticflickr.com/7327/1...46db7ed7c3.jpg

Here's another comparison courtesy of Wikimedia Commons.
http://upload.wikimedia.org/wikipedi...s-Pollinia.jpg
Phalaenopsis-Pollinia [Public domain, CC-BY-SA-3.0 (Creative Commons, Attribution-ShareAlike 3.0 Unported, CC BY-SA 3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], by Cy21 (Own work), from Wikimedia Commons

Cool