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Term Definition
Cork Protective tissue located on the outside of stems, branches, and roots, consisting of the phellogen or cork cambium, the phellem or cork to the outside, and the phelloderm to the inside. Same as periderm. Cross-section of a tree trunk. Drawing by M. N. Sashital.
Cork cambium The actively dividing tissue that produces cork to the outside and phelloderm to the inside. Cross-section of a tree trunk. Drawing by M. N. Sashital.
Cork warts Very small brown to reddish-brown dots that appear on the abaxial leaf blade surfaces of some species of Lecythidaceae. They are also called punctations in descriptions by various authors. Opaque punctations on the abaxial leaf blade surface of Lecythis ibiriba. Photo by S. A. Mori.