These are Aranda Orchids, they are hybrids.
Its a mix of Arachnis which have a slender, thinner petals and Vanda. (more rounded lapping petals) The result you get a fairly sized petals wider than the Scorpion Orchids.
I had purchased a peach coloured one (pic below) to try out.
It was one of my impulsive buying or rather I would say, I got an offer price when a vendor called me out and gave me a bargain.
I got it for RM5.00 - not bad for 2 stalks of flowers with a clay pot full of wood chips.
I would say that must be a cost price.
(Even a stalk of this orchid in a florist might easily cost about RM5.00)
These flowers lasted for 2 weeks in my garden, one gone in a week and the next follow suit after another week. All was OK, until I spotted something not quite right on the leaves.
So here goes: