Holgers' article in 'Orchids' on gratrixianum makes a good read. I know it covers ground already covered on this forum, but all the pertinent info relating to gratrixianum is well presented.
Beautiful dorsal on your plant Angela, these have always been a favourite of mine, they clump easily, flower easily and I like the way the blooms are held nicely above the foliage with no need for staking.
Yours is a good one!
(Only a pleasure to help you post your pictures, only sorry that you have struggled to get e-mail through to me)