Stanhopea tigrina (typical form)

[pmrorchideas]

I'm not convinced that this is not the nigroviolacea form, even though the size doesn't match what you expect from nigroviolacea. I've seen a bit of variation in the hypochil, and much variation in size of nigroviolacea. On the other hand, I've not yet seen such a large, nearly continuous color patch in petals and sepals of tigrina. I suspect that this is not a tigrina, or could be one of the indescriminately created hybrids of the two varieties. I'll vote for the more striped or spotted tigrina that is redder than this as the species.
Morning of July 28, 2013: OK, I do agree that this is more likely Stan. tigrina than Stan. tigrina var nigroviolacea. I compared the picture posted to one of my Stan. tigrina (darker form) that bloomed this morning with three 140 mm broad flowers on the inflorescence. This is a plant that had been growing outdoors the last couple of years, and was moved into the greenhouse about 6 weeks ago.
My wife finds this one much stinkier than the slightly smaller-flowered S. tigrina that bloomed a couple of times earlier this month, but was one just acquired from an anonymous grower at a local show on Mothers' Day this year.