This is my entry for the  worldcraft contest.

Following is an explication of the plant's properties and phases.

A: Open phase.
When the morning mist begins to form,the plants opens up completely.
It's green surface is excellent for photosynthesis and evolved to the point it can absord the feintest of sunlight and use it for energy.
The surface is covered with sensitive 'hairs' which can detect if the plant is in danger by a predator. In case something tries to eat it, a reflex will cause the 'leaves' to contract and spasm. The small extensions on the leaf's egde contain tiny hidden barbs filled with a venom. I'm sure you can figure out what happens next.

B: Partially Closed phase.
When the sun starts to rise and the temperature increases, the plant will fol it's own leaves in order to protect itself from overheating. It's similar to a venus flytrap, but the small extentions will 'lock' itself to the opposite leaf, creating a very strong bond.

C: Detail of Internal Vine & Center
Quite simply, this is what helps the plant to survive.
On the main branch, there are hundred of tiny hair which in turn, consist of dozen even smaller hairs. These, when fully open, form a memebrane used to capture the morning's fog and guide the water to it's roots deep underground. There have a limited movement and can wave around to capture as much of the moisture in the air as possible.

The main vines only pop out under the right conditions. If there isn't enough moisture in the eir, the vines won't come out. These are very fragile but can be regrown in case they get damaged ot ripped out by predators.

D: Closed Phase
This is what the plant looks like when fully closed.
It features a set of spikes that have the same toxic proterties as the smaller barbs on the side of the leaves.
It's brown and dead appearance is cause when the plant drains most of the water out of it's outter layers. The dried shell acts as a buffer against the day's heat, guiding it into the ground or through the spikes.

E: The Root.
This is much, much deeper below the surface and about the same size of the plant itself. The more water it gets, the more it can 'expand' it's terrain and grow 'side branches'.
Near the mountains where the fog tend to focus, you can sometimes witness an entire colony of these plants pop up under the right conditions.
All of the plants share one main root and the more plants there are, the bigger the root.
If the main root where to get damaged somehow, all the plants in that were once part of it will start growing their own roots. Most will wither but the few that survive will, in due time, become as strong as it's parent once was.