Rumex aquaticus
描述：
Description: English: Plant species Rumex aquaticus, shot in Djurgården, Stockholm, Sweden. Date: 9 August 2009. Source: Own work. Author: Rolf Engstrand.
Description: English: Plant species Rumex aquaticus, shot in Djurgården, Stockholm, Sweden. Date: 9 August 2009. Source: Own work. Author: Rolf Engstrand.
