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Guide to Neidium bisulcatum

(Lagerst.) Cleve 1894

Neidium bisulcatum guide
  1. Valves linear, elongate
  2. Apices broadly rounded
  3. Proximal raphe ends extended

Valves are linear and elongate. The apices are broadly rounded. Proximal raphe ends extend to the edge of the circular central area.

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