Sorghastrum nutans | |
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Indiangrass in bloom | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Poales |
Family: | Poaceae |
Subfamily: | Panicoideae |
Genus: | Sorghastrum |
Species: | S. nutans |
Binomial name | |
Sorghastrum nutans | |
Synonyms [1] | |
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Sorghastrum nutans, commonly known as either Indiangrass, yellow Indiangrass, or golden feather grass, [2] is a North American prairie grass found in the Central United States, the Eastern United States, and Canada, especially in the Great Plains and tallgrass prairies.
Indiangrass is a warm-season perennial bunchgrass. It is intolerant to shade. It grows 3 to 7 feet (1 to 2 m) tall, and is distinguished by a "rifle-sight" ligule where the leaf blade attaches to the leaf sheath. The leaf is about 3 feet (1 m) long. [3]
It blooms from late summer to early fall, producing branched clusters (panicles) of spikelets. The spikelets are golden-brown during the blooming period, and each contain one perfect floret that has three large, showy yellow stamens and two feather-like stigmas. One of the two glumes at the base of the spikelets is covered in silky white hairs. The flowers are cross-pollinated by the wind. [4]
The branches of pollinated flower clusters bend outwards. At maturity, the seeds fall to the ground. [4] There are about 175,000 seeds per pound. [3]
Sorghastrum nutans is prominent in the tallgrass prairie ecosystem and the northern, central, and Flint Hills tall grassland ecoregions, along with big bluestem (Andropogon gerardi), little bluestem (Schizachyrium scoparium) and switchgrass (Panicum virgatum). It is also common in areas of longleaf pine.
It is adapted in the United States from the southern border to Canada and from the eastern seaboard to Montana, Wyoming and Utah. [3]
It regrows with renewed vitality after fires, so controlled burns are used, replacing extirpated large herbivores (i.e. bison), for habitat renewal.
It is a larval host to the pepper-and-salt skipper. [5]
Indiangrass is the official state grass of both Oklahoma and South Carolina.
The USDA Natural Resources Conservation Service lists the following uses for Indiangrass:
In the effort to revise common names to be more descriptive and less harmful, the name "golden feather grass" is gaining popularity opposed to the less descriptive "Indiangrass".
Dry–mesic prairie is a native grassland community made up mid-to-tall grasses and a diverse mixture of forbs. The sandy loam or loamy sand soils of Dry-mesic Prairie support grasses that are shorter and grow less densely than Wet-mesic and Wet Prairies. Big bluestem, little bluestem, Indian grass, and porcupine grass are the most abundant grasses in dry-mesic prairie.
The tallgrass prairie is an ecosystem native to central North America. Historically, natural and anthropogenic fire, as well as grazing by large mammals provided periodic disturbances to these ecosystems, limiting the encroachment of trees, recycling soil nutrients, and facilitating seed dispersal and germination. Prior to widespread use of the steel plow, which enabled large scale conversion to agricultural land use, tallgrass prairies extended throughout the American Midwest and smaller portions of southern central Canada, from the transitional ecotones out of eastern North American forests, west to a climatic threshold based on precipitation and soils, to the southern reaches of the Flint Hills in Oklahoma, to a transition into forest in Manitoba.
The Flint Hills, historically known as Bluestem Pastures or Blue Stem Hills, are a region in eastern Kansas and north-central Oklahoma named for the abundant residual flint eroded from the bedrock that lies near or at the surface. It consists of a band of hills stretching from Kansas to Oklahoma, extending from Marshall and Washington Counties in the north to Cowley County, Kansas and Kay and Osage Counties in Oklahoma in the south, to Geary and Shawnee Counties west to east. Oklahomans generally refer to the same geologic formation as the Osage Hills or "the Osage."
Andropogon gerardi, commonly known as big bluestem, is a species of tall grass native to much of the Great Plains and grassland regions of central and eastern North America. It is also known as tall bluestem, bluejoint, and turkeyfoot.
Brachypodium sylvaticum, commonly known as false-brome, slender false brome or wood false brome, is a perennial grass native to Europe, Asia and Africa. It has a broad native range stretching from North Africa to Eurasia.
The Western Gulf coastal grasslands are a subtropical grassland ecoregion of the southern United States and northeastern Mexico. It is known in Louisiana as the "Cajun Prairie", Texas as "Coastal Prairie," and as the Tamaulipan pastizal in Mexico.
Schizachyrium scoparium, commonly known as little bluestem or beard grass, is a species of North American prairie grass native to most of the contiguous United States as well as a small area north of the Canada–US border and northern Mexico. It is most common in the Midwestern prairies and is one of the most abundant native plants in Texas grasslands.
Sporobolus heterolepis, commonly known as prairie dropseed, is a species of prairie grass native to the tallgrass and mixed grass prairies of central North America from Texas to southern Canada. It is also found further east, to the Atlantic coast of the United States and Canada, but is much less common beyond the Great Plains and is restricted to specialized habitats. It is found in 27 states and four Canadian provinces.
The Konza Prairie Biological Station is a 8,616-acre (3,487 ha) protected area of native tallgrass prairie in the Flint Hills of northeastern Kansas. "Konza" is an alternative name for the Kansa or Kaw Indians who inhabited this area until the mid-19th century. The Konza Prairie is owned by The Nature Conservancy and Kansas State University.
Houston black soil extends over 1,500,000 acres (6,100 km2) of the Texas blackland prairies and is the Texas state soil. The series is composed of expansive clays and is considered one of the classic vertisols.
The North America Prairies is a large grassland floristic province within the North American Atlantic Region, a floristic region within the Holarctic Kingdom. It lies between the Appalachian Province and the Rocky Mountains and includes the prairies of the Great Plains. It is bounded by the Canadian coniferous forests on the north and the arid semideserts to the southwest. The province itself is occupied by temperate grasslands, savannas, and shrublands. Endemism is rather limited in this province, and its boundaries are vague. During the Pleistocene much of the province was glaciated.
Harrell Prairie Botanical Area or Harrell Prairie Hill is a 160-acre (65 ha) tallgrass prairie nature preserve located within Bienville National Forest near Forest, Mississippi. It is a rare remaining example of the Jackson Prairie Belt in Mississippi. It was declared a National Natural Landmark in May 1976 and a Botanical Area by the Forest Service in 1980.
Sorghastrum is a genus of grasses, native to Africa and the Americas.
The Northern tall grasslands is one of 867 terrestrial ecoregions defined by the World Wide Fund for Nature. This ecoregion largely follows the Red River Valley in the Canadian province of Manitoba and the American states of North Dakota and Minnesota.
The Central tall grasslands are a prairie ecoregion of the Midwestern United States, part of the North American Great Plains.
Lespedeza leptostachya is a rare species of flowering plant in the legume family known by the common names prairie lespedeza and prairie bush-clover. It occurs in the Upper Midwest region of the United States. The flowers are creamy-white to purplish and arranged into a narrow terminal spikes.
Dalea purpurea is a species of flowering plant in the legume family known as purple prairie clover. Native to central North America, purple prairie clover is a relatively common member of the Great Plains and prairie ecosystems. It blooms in the summer with dense spikes of bright purple flowers that attract many species of insects.
Muhlenbergia cuspidata is a species of grass known by the common name plains muhly. It is native to North America where it is distributed across central Canada and the central United States.
Sorghastrum secundum is a species of grass known by the common name lopsided Indiangrass. It is native to the Southeastern United States.
Tragus racemosus, commonly referred to as stalked bur grass, European bur grass, or large carrot seed grass, is a species of grass native to Europe. It is often confused with a similar plant of the same genus, Tragus berteronianus. It is a monocot and is considered a weed in many countries and is a relatively uncommon seed contaminant.