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Ordinary epidermis
Guard cells
Thick cuticle
Thicker cuticle
Thin cuticle
Parasitic plant
Petal epidermis
Sclerified epidermis
Papillose epidermis
Sculptured cuticle
Elaborate cuticle
Cuticular horns
Radial walls
Cuticle proper
No epidermis
Epidermal peels
Cycad peel
Paradermal
Typical stoma
Sunken stoma
Stomatal orientation 1
Unusual orientation 2
Artifact
Stomata and fibers
Stomatal crypts
Crypts, mag.
Crypt margin
Non-crypt
Water lily
Stomatal channels
Groove, hi mag
Subsidiary cells
Ledges
Papillae
Trichome
Uniseriate hair
Peltate hair, mag
Peltate, lo mag
Branched hairs
Trichome base
Lithocyst, Ficus
Lithocysts, hemp
Bulliform cells
Grass epidermis
Multiple epi
Uniseriate?
Peperomia

Fig. 10.3-12. Magnification of oleander crypt. This crypt appears to lack an opening to the atmosphere outside the leaf. Do you think that is correct?

            This section cuts through the edge of the crypt, just missing the opening. We cannot be absolutely certain of that from this one single section, we know it because oleander is a species that has been studied carefully. If this were a species being examined for the first time, or if it were a newly created mutant in a genetic engineering experiment, we would need to examine serial sections to ascertain whether there is indeed an opening or not.