Cross-section of a leaf of grass (Eriachne ciliata).

Credit: Edwards Lab/Brown University

Source: Best Science Photos of the Week,

Diagram showing the act of the bulging strand bending over moss cells. It is interesting when you break moss down to its cell’s. They are separate units taking on their own separate responsibilities within its self. However at the same time they are all working together as a whole, as one structure, comprised of many.

Source: Relational Geometries, CAST, School of Architecture and Planning, University at Buffalo

Here’s a closeup of that stomata with a pair of guard cells, although they ended up a bit overexposed. (Photo taken by student)

Source: School of Life Sciences, University of Nevada, LINK

One Red Rose for all lovers (of Science) and happy Saint Valentine.

Source