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The leaf structure of Galanthus nivalis L. (snowdrop) and Leucojum aestivum L. (snowflake) is characterized by a homogeneous mesophyll tissue. The dominant characters of the leaves are cavities with mucose substance. There is a striking difference between these plants tepal anatomy. A central cavity occurs only in snowdrop tepals. Plastids from white parts of the tepals have a poorly developed membrane...