A leaf is an organ of the ferns and seed plants. Mosses also have leaves, but here they are organs of the gametophyte, which, moreover, differ from true leaves in construction. Other plant organisms such as algae do not develop leaves, although leaf-like structures are present in some brown algae (such as Kelp). These should not be called leaves.
Netherlands
Netherlands
Netherlands
Germany
Netherlands
Germany
Netherlands
Germany
Germany
Germany
Germany
Netherlands