Up 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
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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.
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