DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Clubmoss cone, light micrograph. Transverse section through the cone (strobilus) of the clubmoss Lycopodium clavatum. The strobilus consists of a central axis (purple). Surrounding this axis are the spore capsules (sporangia, brown, 5 seen here). These burst open to release the spores. These then germinate to form gametophyte plants that continue the reproductive cycle. Magnification: x45 when printed at 10 centimetres across.
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