Stomata

Stomata are pores on the epidermis of the plants and they allow oxigen to get in and carbon dyoxide to get out, water can also leave the inside of the plant from here. These ones are from the epidermis of Crassula ovata. We can see how the epidermical cells are colorless but the stomata are…

Outer and inner onion epidermises – stained at home!

The first time I sampled an onion peel was a bit different from the introductory experiment in a biology textbook (I observed the outer epidermis, without staining it). Till now I haven’t been able to get the same “3D” effect again (https://microcosmos.foldscope.com/?p=197449), but today’s observations were equally beautiful! This time, I observed and compared the…

Stomata and Guard Cells

I observed the outer epidermis of a leaf and the skin of a pea pod under my Foldscope. The samples were taken at different times of the day, and we can see both closed and open stomata, depending on when they were taken. Closed Stomata This is a leaf peel from a rhoeo (Tradescantia spathacea)…

Tepal epidermis

You might have seen this earlier post by Cristina on plant histology. I loved the jigsaw pattern on the leaf epidermis and wanted to see epidermal patterns in other plants and their structures. One of the flowers that one sees in early spring in the DC area are the magnolias. This one in the picture…