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SPIRAL TASSELWEED Ruppia sp. Aquatic. Submerged aquatic perennial with slender stems; 2 very similar species occur. Grow in brackish coastal pools and ditches. Flowers comprising 2 greenish stamens and no petals; in pairs, arranged in umbels on stalks that rise to the surface (July-Sept). Fruits swollen, asymmetrical, long-stalked. Leaves hair-like, 1-3mm wide. Status local and declining.