Bulbophyllum facetum

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Curently in bloom - the flowers only stays open until noon then they close

NYEric said:
Hmm..is it reacting to heat or light?
some Bulbos are only open in the morning. It must be an adaptation to when their pollinators are active. Similar adaptation in why some chids only fragrant at certain times of the day.
SlipperFan said:
Beautiful, Uri. When you say it closes at noon, do you mean for good, or does it re-open the next day?

Speaking for Uri it will open the next day.

I have a couple other species that do this too. Sometimes the lenght of time the flower stays open increases as the flower ages until they are open all the time (just before they crapp out).