Medlar leaf,light micrograph

Numéro d’image : 11675915
Medlar leaf,light micrograph
Medlar leaf. Light micrograph of a section through the midrib of a leaf from a wild sage (Salvia nemorosa) plant. This is a typical xerophyte leaf,adapted for arid conditions. It consists of an upper (red) and lower epidermis (blue) with a cuticle and trichomes (hairs) to prevent water vapour escaping. Under the upper epidermis are two layers of palisade mesophyll (red and blue) with chloroplasts. Beneath this is the spongy mesophyll (red; round) with chloroplasts and large inter-cellular spaces. The lower epidermis is thin with many stomata (pores). In the middle of the lamina is one single large vein (the horseshoe midrib) under which,the two epidermal layers consists of thick-walled cells,the collenchyma (black-blue),and a ring of parenchyma
Licence : Droits gérés
Crédit: Science Photo Library / Wheeler, Dr. Keith
Taille de l’image : 4394 px × 4394 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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