Carex petitiana is a species of sedge in the family Cyperaceae that lives in swamps and bogs at altitudes of 1,800–3,600 metres (5,900–11,800 ft) in Cameroon, the Democratic Republic of Congo, Ethiopia, Kenya, Malawi, Nigeria, Tanzania, Uganda and Zimbabwe. Two subspecies are recognised:
Carex leptalea is a species of sedge known by the common names bristly-stalked sedge and flaccid sedge. It is native to much of North America including most of Canada, the Dominican Republic, and the United States. It only grows in wetlands. This sedge produces dense clusters of thin stems up to 70 centimeters tall from a network of branching rhizomes. The thin, deep green leaves are soft, hairless, and sometimes drooping. The inflorescence is up to 16 millimeters long but only 2 to 3 millimeters wide, and is yellow-green in color. There are only a few perigynia on each spikelet, and they are green and veined.
- Carex leptalea subsp. harperi(Fernald) W.Stone - southeastern US from Texas and Florida north to Missouri and Pennsylvania
- Carex leptalea subsp. leptalea - widespread from Alaska east to Nunavut and south to California and Dominican Republic
- Carex leptalea subsp. pacificaCalder & Roy L.Taylor - Washington State, British Columbia, southeastern Alaska
Kenneth Kent Mackenzie (1877–1934) was a lawyer and amateur botanist who wrote extensively on the genus Carex in North America. The standard author abbreviation Mack. is used to indicate this person as the author when citing a botanical name.
Carex colchica is a species of perennial plant in the family Cyperaceae.
Carex capillaris, the hair-like sedge, is a species of sedge found in North America and northern Eurasia including Greenland.
Carex viridula, known as little green sedge, green sedge, or greenish sedge, is a small flowering plant native to North America, Europe, Asia, and Morocco.
Carex elata, tufted sedge, is a species in the genus Carex, native to all of Europe, the Atlas Mountains of Africa, Turkey, Iran and Central Asia. It prefers to grow with its roots in water. Its cultivar 'Aurea' has gained the Royal Horticultural Society's Award of Garden Merit.
Carex remota, the remote sedge, is a species in the genus Carex, native to Europe, the Atlas Mountains in Africa, and western Asia. It is a riparian forest specialist. It is known as one of the most frequently hybridizing species of Carex, forming hybrids with C. appropinquata, C. arenaria, C. brizoides, C. canescens, C. divulsa, C. echinata, C. elongata, C. leporina, C. otrubae, C. paniculata, and C. spicata.
Carex curvula, the Alpine sedge, is a species of flowering plant in the genus Carex, native to the Pyrenees, the Alps, the Carpathians, and the mountains of the Balkans. It has gone extinct in Germany. It propagates almost exclusively clonally, with some of its clonal colonies estimated to be 2,000 years old.
Carex rupestris, called the curly sedge and rock sedge, is a species of flowering plant in the family Cyperaceae, native to temperate and subarctic North America, Greenland, Iceland, Europe, and Asia. It prefers to grow on rocky ledges.
Carex atrata, called black alpine sedge, is a widespread species of flowering plant in the genus Carex, native to Greenland, Iceland, and most of Europe, plus scattered locations across temperate Asia, including Anatolia, Siberia and the Himalaya, as far as Taiwan and Japan. Its chromosome number is 2n=52, with some variants reported, e.g. n2=54 for Greenland material.
Carex demissa is a species of sedge, native to Iceland, Macaronesia, all of Europe, and western Asia to the Himalayas and possibly Greenland. It has been introduced to eastern Canada, New Jersey, and Tasmania. It is a member of the Carex flava species complex.
Carex ornithopoda, called the bird's foot sedge, is a species of flowering plant in the genus Carex, native to most of Europe, and Anatolia. A variegated cultivar is commercially available.
Carex lachenalii, called the twotipped sedge and hare's foot sedge, is a species of flowering plant in the genus Carex, native to temperate and subarctic North America, Greenland, Iceland, Europe, and Asia, and the South Island of New Zealand. Its diploid chromosome number is 2n=64, with some uncertainty.
Carex lepidocarpa, called the long-stalked yellow-sedge, is a species of flowering plant in the genus Carex, native to eastern Canada, Morocco, and most of Europe. It is a member of the Carex flava species complex.
Juncus triglumis, called the three-flowered rush, is a species of flowering plant in the genus Juncus, native to the subarctic and subalpine Northern Hemisphere. It is typically found in calcareous tundra habitats and arcto-alpine fens. It is often found in association with Carex atrofusca and Carex bicolor in the so-called Caricion bicolori-atrofuscae alliance.
Carex dolichostachya is a species of flowering plant in the sedge genus Carex, family Cyperaceae. It is native to eastern Asia; central and southeast China, Taiwan, the Philippines, Korea, the Ryukyu Islands, and Japan. Its popular cultivar 'Kaga-nishiki' is sold in the US by the trade designation Gold Fountains.
Carex atlantica, the prickly bog sedge, is a species of flowering plant in the family Cyperaceae, native to eastern North America, and eastern Hispaniola. It is usually found growing in bogs or acidic seeps.
Carex dissitiflora is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of Japan and Taiwan.
