Hey!
Lots of the pictures are of different Ansellia africanas. Which is totally fine since it is one of my favorites!
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It's always very interesting to see all the different color variations and patterns in Ansellias.
For the other orchids...
My guesses are:
Picture 8 might be some kind of Eulophia.
Picture 11 looks like some kind of Aerangis.
Picture 18 & 19 must be a dendrobium of some sort.
Pictures 27 & 28 look like some kind of Aerangis again to me.
I so wish that I could have orchids growing wild in the garden like that, but the humidity here in Namibia is just not high enough for most of the year. I just love epiphytes that are actually growing on threes as they are supposed to.
Thanks for the sharing.
Picture 7 looks like some kind of Aerangis to me.