A very interesting plant from one of my favorite places on earth (the high places of Asia) – the Noble rhubarb. This plant grows at high altitude (4000m) and one of it’s adaptations to the extreme conditions in the alpine zone it inhabits is a mini-greenhouse formed of translucent leaves.
A picture of a few in a mountain valley (Nepal?):
And a wonderful plate from 1855 (via BibliOdyssey):
