Just like most sedges, triangular club-rush has a three-sided stem. But in this case, the edges are very pronounced. Don't let the name fool you, it is not a rush species. Triangular club-rush is a very sturdy plant and is resistant to waves. It used to be one of the characteristic pioneer plants on the freshwater marshes in the Belgium-Dutch delta. Pollution and faulty management of river banks in the past have resulted in this plant practically disappearing. Now that the rivers are being cleaned up, triangular club-rush is slowly returning.
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