Carex (wetland) (named varieties)

Carex is a vast genus of more than 2,000 species^[2] of grassy plants in the family Cyperaceae, commonly known as sedges.

Carex species and cultivars are popular in horticulture, particularly in shady positions.^[12][13] Native species are used in wildland habitat restoration projects, natural landscaping, and in sustainable landscaping as drought-tolerant grass replacements for lawns and garden meadows.^[14] Some require damp or wet conditions, others are relatively drought-tolerant. 

Source: Wikipedia