Dryopteris filix-mas, enlarged approximately 550 times (sporangium) / 850 times (spore tetrad and germination), in SOMSO-PLAST®. After Prof. Dr. W. Weber. A sub-model shows a sporangium in the moment of opening. In addition to this, a spore tetrad and a spore germinating onto a prothallium are shown and enlarged to a greater extent. In one piece. On a stand with green base.
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