Plant Finder

Needle Spike-rush

A rhizomatous perennial herb growing on the margins of lakes, ponds, reservoirs and rivers, in sites subject to winter flooding, and fully aquatic in shallow, still or slow-moving mesotrophic to eutrophic water. It roots into sand, gravel, mud or silt, often forming extensive lawns, but flowering only when exposed by falling water levels. 0-390 m (Drumore Loch, E. Perth).

Northern Spike-rush

A rhizomatous perennial herb found in the middle reaches of upland rivers, usually in slacker water in places which are to some extent protected from spates, such as in shallow bays. It also grows in ditches, pools, runnels and springs. The substrate is usually gravel with some silt deposition. 60-340 m (Ribblehead, Mid-W. Yorks.).

Many-stalked Spike-rush

A densely tufted perennial herb mainly of acid bogs, wet heath, valley mires, pools and wet hollows over peat, and at the edge of acidic lakes; also occurring in coastal dune-slacks. 0-610 m (Macgillycuddy`s Reeks, S. Kerry).

Common Spike-rush

An emergent rhizomatous perennial herb, found on the margins of ponds, lakes, slow-flowing rivers and streams, in fens, marshes, swamps and wet meadows, and in ditches, dune-slacks and saltmarshes. It grows in a wide range of organic and mineral soils, but rarely on acidic peat. It spreads by rhizomes and reproduces by seed. 0-550 m (Tyne Head, Cumberland).

A rhizomatous perennial herb found on the margins of ponds, lakes and rivers, and in fens, marshes, wet meadows and ditches. It does not appear to be ecologically distinct from subsp. vulgaris and, indeed, is often found growing with it. Lowland.

Dwarf Spike-rush

A diminutive rhizomatous perennial growing on firm estuarine mud by tidal rivers, and in tidal pans in brackish grazing marshes. It occurs close to the upper limit of tidal influence, avoiding strongly saline areas. It reproduces vegetatively by turions, and by seed, but flowering and fruiting is very poor in many localities. Lowland.

Few-flowered Spike-rush

A perennial herb of base-rich marshes and fens, calcareous flushes on peaty soils, stony and muddy areas with seeping water, wet paths and short turf on banks; also in coastal cliff-flushes, dune-slacks and in the upper parts of saltmarshes. It requires open sites and is often dependent on grazing, cutting or disturbance. 0-915 m (Atholl, E. Perth).

Slender Spike-rush

A rhizomatous perennial herb, predominantly of coastal habitats, growing in damp dune-slacks, saltmarshes, short, brackish grassland and pools in the spray zone. It also occurs inland in base-rich, wet meadows and calcareous marshes, and locally, as in Oxfordshire, by springs with higher than normal sodium content. Generally lowland, but reaching 325 m at Ponterwyd (Cards.).