AT51 - Keeping it minimal

Had a fabulous day out with my camera club at the Botanic Gardens in Dundee....the first outing I have been out with them and what a great day it was too!
I am just starting to look at the photos and I'm so chuffed as the weather didn't start very promisingly but it dried up eventually...great company...great fun and a day taking photos.....it doesn't get much better than this!
No idea what this is...It was in the tropical greenhouse and I thought it would fit the bill for today's challenge....