Stems: triangular. Leaves: the upper longest, commonly shorter than the stem. Heads: dark, ferruginous, spikes ovoid, contiguous in an oblong or crowded spherical cluster.
These grass-like Sedges are extremely numerous. The Tussock Sedge has brown-purple spikes, and rough-margined leaves.
Carex pyrenaica, or Dwarf Sedge, is a small species, very leafy at the base, and densely-flowered. It grows at high altitudes.
Carex Mertensii, or Merten's Sedge, has slender, erect stems, which are rough on the very sharp angles. The leaves are broad and flat, and the spikes drooping on slim stalks. It grows at the edge of high mountain streams.
Car ex nigricans, or Black Sedge, is leafy at the base, the leaves terminating in very sharp points. The spikes are almost black. It grows in wet meadows at high elevations.
Carex rupestris, or Rock Sedge, has leaves which often curve and curl, and a solitary, terminal spike.