Threeway sedge | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Poales |
Family: | Cyperaceae |
Genus: | Dulichium Pers. |
Species: | D. arundinaceum |
Binomial name | |
Dulichium arundinaceum | |
Synonyms [1] | |
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Dulichium is a monotypic genus of sedge containing the single species Dulichium arundinaceum, which is known by the common name threeway sedge. This is an aquatic or semi-aquatic plant of the lakes, streams, and ponds of the United States and Canada. It has a wide distribution across the two countries, though noticeably absent from the Dakotas and from the Southwestern Deserts. [1] [2] [3] [4] [5]
Dulichium arundinaceum has a thick rhizome system and grows to heights approaching a meter. It is reminiscent of bamboo in appearance when new, growing bright green erect stalks in large, grassy stands. Stems are round to slightly triangular in cross-section (though not nearly as angularly triangular as in Cyperus or Carex), and hollow. The leaves are in three ranks along the stem when seen from above (thus the common name "threeway sedge"), with sheaths along the stems, and the inflorescence grows from the leaf axilla. The spikelets are generally lance-shaped and one to three centimeters long when ripe. [2] [6]
Two varieties are recognized: [1]
One fossil fruit of †Dulichium marginatum has been described from a middle Miocene stratum of the Fasterholt area near Silkeborg in Central Jutland, Denmark. [7]
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus Carex with over 2,000 species.
Cyperus is a large genus of about 700 species of sedges, distributed throughout all continents in both tropical and temperate regions.
Carex is a vast genus of nearly 2,000 species of grass-like plants in the family Cyperaceae, commonly known as sedges. Other members of the family Cyperaceae are also called sedges, however those of genus Carex may be called true sedges, and it is the most species-rich genus in the family. The study of Carex is known as caricology.
Carex nebrascensis is a species of sedge known as Nebraska sedge.
Carex vesicaria is an essentially Holarctic species of sedge known as bladder sedge, inflated sedge, and blister sedge. It has been used to insulate footwear in Norway and among the Sami people, and for basketry in North America.
Carex pensylvanica is a species of flowering plant in the sedge family commonly called Pennsylvania sedge. Other common names include early sedge, common oak sedge, and yellow sedge.
Alisma triviale, the northern water plantain, is a perennial semi-aquatic or aquatic plant in the water-plantain family (Alismataceae).
Schoenoplectus heterochaetus is a species of flowering plant in the sedge family known by the common name slender bulrush. It is native to North America, where it can be found in scattered locations in Canada and the United States.
Scirpus ancistrochaetus is a rare species of flowering plant in the sedge family known by the common names barbedbristle bulrush and northeastern bulrush. It is native to the northeastern United States from New Hampshire south to Virginia. It used to be found in Quebec but it is now thought to be extirpated there. It was also believed extirpated from the state of New York, but at least one population has been rediscovered in Steuben County in 2010. It is threatened by the loss and degradation of its wetland habitat. It is a federally listed endangered species.
Carex fraseriana is a perennial member of the sedge family with the common name Fraser's sedge. It was the only species of the genus Cymophyllus before it was re-transferred to Carex.
Corallorhiza odontorhiza, common name fall coral-root or small-flowered coral-root, is a species of orchid widespread across eastern and central United States, and reported also from Mexico, Central America, Quebec and Ontario. In North America, it occurs in forested areas up to an elevation of 2800 m.
Carex conjuncta, known as soft fox sedge, is a species of sedge that was first formally named by Francis Boott in 1862. It is endemic to the central and eastern United States.
Symphyotrichum subulatum, commonly known as eastern annual saltmarsh aster or, in Britain and Ireland where it is naturalized, annual saltmarsh aster, is an annual plant in the family Asteraceae native to the eastern United States and the Gulf Coast to Texas. The species grows primarily in coastal salt marshes, although in the Ozarks it occurs as a non-marine weedy variety.
Carex fascicularis, commonly known as tassel sedge, is a species of sedge of the family Cyperaceae that is native to Australia, New Zealand and New Guinea.
Carex tereticaulis, also known as basket sedge, is a species of sedge of the family Cyperaceae that is native to southern parts of Western Australia, southern parts of South Australia, southern and eastern parts of New South Wales as well as north western and central Victoria and Tasmania. The Koori peoples know the plant as Poong'ort.
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 hostiana, the tawny sedge, is a species of flowering plant in the genus Carex, native to Europe and northeast Canada, and extinct in Massachusetts. It is a member of the Carex flava species complex.
Carex deweyanaDewey's sedge, short-scale sedge, is a species of sedge native to Canada and the United States.
Carex peckii, Peck's sedge, Peck's oak sedge, or white-tinged sedge, is a species of sedge native to Canada and the United States.
Carex gaudichaudiana, also known as fen sedge, is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of Australia and New Zealand.