Australia's favorite Dendrobium, 'Rock Lillies' they call them as they can grow on exposed hillsides in full sun. I have a number of them, will post them here as they open up. This one is a hybrid called 'Golden Arch'. (Lynette Banks x spec Yellow Moon), so I guess it's not really a Dend speciosum but a Dendrobium. I think of it as a Dend speciosum, correct me Arthur.
A Viet Namese grower from Orange County brought about 500 seedling into California some time ago and has them numbered 1 to 10. Don't exactly know how he gets that but whatever. #1, sold by him always looks the same, divisions I guess. The flowers are large but not placed too well, not compact and a little rambling all over the place.
This then is Dendrobium Golden Arch #1.