| Tall flatsedge | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Cyperus |
| Species: | C. eragrostis |
| Binomial name | |
| Cyperus eragrostis | |
| Synonyms | |
Cyperus vegetus | |
Cyperus eragrostis is a species of sedge known by several common names, including tall flatsedge, nutgrass, tall nutgrass, umbrella sedge, chufa, Earth almond, zula nuts, edible galingale and pale galingale. [1]
This species is native to the West Coast of North America from California to Washington, the Southeastern United States, Jamaica, and South America. [2] [3] [4] [5] It has become naturalized elsewhere in some regions in the northeastern and southeastern U.S., Europe, South Africa, and various oceanic islands (Azores, Canary Islands, Ryukyu Islands, Norfolk Island, Easter Island, etc.). [3] [6] [7] It can become a weed where it is introduced; it has been known to infest rice fields.
It is found in riparian areas, roadsides ditches, damp grasslands, and other moist habitats. [5]
Cyperus eragrostis is an herbaceous perennial growing from rhizomes. It is a green sedge with tall, erect stems, 10–90 centimetres (3.9–35.4 in) in height. Long, thin, pointed leaves radiate from the top, similar to parasol ribs.
Its flowers are found within tough, rounded, greenish-yellow or beige spikelets. Fruiting is in the summer. [5]
Cyperus is a large genus of about 700 species of sedges, distributed throughout all continents in both tropical and temperate regions.
Cyperus polystachyos, also known as Pycreus polystachyos, and also called manyspike flatsedge in the US, or bunchy sedge, coast flatsedge, many-spiked sedge or Texas sedge in Australia, is a herbaceous species in the family Cyperaceae, widespread in tropical and subtropical areas around the world, sometimes extending its range into temperate regions.
Cyperus acuminatus is a common species of sedge known by several common names, including tapertip flatsedge and pale umbrella-sedge. This plant is native to North America, where it is widespread across the Great Plains and the western United States, with scattered populations in the eastern US as well as in Saskatchewan, Tamaulipas and Coahuila.
Cyperus bipartitus, commonly known as slender flatsedge, river cyperus, or the shining flatsedge, is a common species of sedge. The name "slender flatsedge" also applies to Cyperus gracilis.
Cyperus difformis is a species of sedge known by several common names, including variable flatsedge, smallflower umbrella-sedge and rice sedge. This plant is native to southern Europe, most of Africa and Asia, and Australia, and it is naturalized in other areas of the world, including large parts of the Americas.
Cyperus erythrorhizos is a species of sedge known by the common names red-rooted flatsedge or redroot flatsedge. It is found across much of North America from Maine, Ontario and British Columbia south to Tabasco in southern Mexico.
Cyperus fuscus is a species of sedge known by the common name brown galingale, or brown flatsedge. This plant is native to much of Europe, Asia and North Africa from England, Portugal and Morocco east to China and Thailand. It is an introduced species in North America, where it is naturalized in widely scattered locations in the United States and Canada.
Cyperus niger is a species of sedge known by the common name black flatsedge. This plant is native to the Americas, where it can be found in wet areas from South and Central America to the southwestern United States, from California and Oklahoma south to Argentina.
Cyperus odoratus is a species of sedge known by the common names fragrant flatsedge and rusty flatsedge. This species is quite variable and may in fact be more than one species included under one name.
Cyperus squarrosus is a species of sedge known by several common names, including bearded flatsedge and awned flatsedge. It is found in wet environments in North and South America, Africa, Australia, southern Asia and Italy.
Cyperus laevigatus is a species of sedge known by the common name smooth flatsedge.
Cyperus parishii is a species of sedge known by the common name Parish's flatsedge. It is native to the southwestern United States and northwestern Mexico. It grows in desert, mountain, and coastal habitat in Sonora, southwestern New Mexico, Arizona, southern Nevada and southern California. It is an annual sedge forming small clumps up to about 25 centimeters tall. The inflorescence is a spherical cluster of up to 30 reddish spikelets with a few long, leaflike bracts at the base.
Cyperus strigosus is a species of sedge known by the common names false nutsedge and straw-colored flatsedge. It is native to the United States, Cuba and Canada, where it grows in wet areas in many habitat types, including disturbed and cultivated areas such as roadsides and crop fields. It is common and sometimes weedy. It is a perennial sedge growing up to 70 centimetres tall. The inflorescence is a cluster of many linear-shaped spikelets up to 3 centimetres long each. A few long, leaf-like bracts grow at the base of the spike.
Cyperus gracilis, with the common name is slender flat sedge and slimjim flatsedge, is a sedge native to Australia. The species epithet gracilis refers to the graceful form of the leaves.
Cyperus pennatiformis is a rare species of sedge known by the common name coastal flatsedge. It is endemic to Hawaii, where it grows on the islands of Maui, Kauai, and Laysan. It is a federally listed endangered species of the United States.
Cyperus articulatus is an aromatic species of sedge known by the common names jointed flatsedge and priprioca. It has also been known as Guinea rush or adrue. It grows as a perennial herb. It grows in water or near it in rivers, streams, lakes, and swamps with a hyperhydrate or possibly tenagophyte growth pattern. It is widespread across tropical and subtropical regions in Africa, southern Asia, northern Australia, the southeastern United States, the West Indies, and Latin America. While it is closely related to highly invasive sedges such as purple nut sedge, priprioca is less prolific and competitive than its relative.
Cyperus longus is a species of sedge known by the common names of sweet cyperus and water rush in Africa, or in Britain galingale.
Cyperus javanicus, also known as the Javanese flatsedge, is a sedge of the family Cyperaceae that is native to Indonesia and Australia.
Cyperus retrorsus, commonly called pine barren flatsedge, is a species of flowering plant in the sedge family (Cyperaceae). It is found primarily in the Southeastern United States, with a range extending north to Martha's Vineyard, Massachusetts and south to Tamaulipas, Mexico. Its natural habitat corresponds to dry sandy soils, open woodlands and thickets.
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