Seed structure of several Potamogeton species

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Imaging technique: 
Scanning Electron Micrograph

Figure A-G Aponogeton ulvaceus; H, I Potamogeton desertorum; J, K Aponogeton subconjugatus; L, M, N Potamogeton vallisnerioides, seed perhaps not fully mature.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith