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Fig.
11.3-2. Transverse section of delphinium stem (Delphinium
ajacis). The outermost layers of this cortex have differentiated as a
hypodermis, which is fairly common. An unusual feature here, however, is that the hypodermis is basically an aerenchyma
– it has so many large intercellular spaces that it appears to be only loosely
attached to the epidermis and the rest of the cortex.
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