Enations are scaly

leaf A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, ste ...

like structures, differing from leaves in their lack of

vascular The blood vessels are the components of the circulatory system that transport blood throughout the human body. These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away f ...

tissue. They are created by some leaf diseases and occur normally on '' Psilotum''. Enations are also found on some early plants such as '' Rhynia'', where they are hypothesized to have aided in

photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored i ...

References

Plant morphology Botanical nomenclature {{Plant-morphology-stub