Black & White photo: Furled up Fern

I took this photo in the glasshouses at Wisley when we went to visit the butterflies. I was hoping to squeeze it into that post but somehow didn't manage it. Now I've given it the black and white treatment I'm glad I didn't! 

I do have a minor obsession with ferns, especially the furled up sort. But I think it's understandable. I'm intrigued as to how they unfurl, and at what speed...

Given the time to do it I'd happily sit and watch one - especially in the warm glasshouses at Wisley - so I could let you know firsthand. But until then, isn't nature wonderful?