Japanese stiltgrass | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Poales |
Family: | Poaceae |
Subfamily: | Panicoideae |
Genus: | Microstegium |
Species: | M. vimineum |
Binomial name | |
Microstegium vimineum | |
Microstegium vimineum, commonly known as Japanese stiltgrass, packing grass, or Nepalese browntop, is an annual grass that is common in a wide variety of habitats and is well adapted to low light levels. It has become an invasive species throughout parts of the world, most notably North America.
Microstegium viminium is native to many parts of Asia from Turkey in the west to Japan in the east. In East Asia, it is found in China, Japan, the Russian Far East, North Korea, South Korea, and Taiwan. In Southeast Asia, its native range includes Malaysia, Myanmar, the Philippines, Thailand, Laos, and Vietnam. In South Asia, it occurs in Bhutan, India, and Nepal. In West Asia, particularly in the Caucasus and the Black Sea and Caspian Sea coasts, it can be found in Turkey, Georgia, Iran, and in Sochi in Russia. [1] [2]
The species has also been introduced extensively beyond its native range. In North America, it is established throughout the Midwestern United States, the Southeastern United States, the West South Central United States, the Northeastern United States, and southern Ontario in Canada. [1] [2]
It typically grows to heights between 40 and 100 cm (1.3 and 3.3 ft) and is capable of rooting at each node. The plant flowers in late summer and produces its seeds in the form of a caryopsis shortly thereafter. [1] [2] It is quite similar to and often grows along with the North American grass Leersia virginica , but L. virginica lacks the distinctive silver stripe on the center of the leaf that is present on Japanese stiltgrass and also flowers one to two months earlier. [1] [3]
The plant was accidentally introduced into the U.S. state of Tennessee around 1919 as a result of being used as a packing material in shipments of porcelain from China. It has spread throughout the Southeastern U.S. and is now found in 26 states. [4] Microstegium vimineum most commonly invades along roads, floodplain and other disturbed areas, but will also invade undisturbed habitats. [5] [6] [7] White-tailed deer, which do not browse the grass, may facilitate spread by browsing on native species and thereby reducing competition for the exotic plant. [8] Invasion of Microstegium can reduce growth and flowering of native species, [9] suppress native plant communities, [10] alter and suppress insect communities, [11] slow plant succession [12] and alter nutrient cycling. [13] [14] Removal of Microstegium can lead to recovery of native plant communities. [15] [16] [17]
As this grass is an annual, in order to control it, mowing must be performed before the plants go to seed. [18] [19]
This plant has been put on the European list of invasive alien species, [20] meaning that it cannot be imported into or traded in the European Union. [21]
Despite its invasive status in the United States, there are some benefits to stiltgrass. It can serve as a host plant for some native satyr butterflies, such as the Carolina satyr Hermeuptychia sosybius [22] and the endangered Mitchell's satyr Neonympha mitchellii . [23] In the absence of other habitat, stiltgrass is more preferable to have than nothing, providing cover for native amphibians such as wood frogs and toads. [24] Stiltgrass is also unfavorable habitat for ticks due to higher temperature and lower humidity, leading to increased mortality for them. [25] The dead fallen stems of stiltgrass can provide shelter for rodents to the point where aerial predators (owls and hawks) cannot catch them. [26]
White-tailed deer do not eat stiltgrass and help its dominance by eating competing plants. However, stiltgrass can be outcompeted by other aggressive species such as annual ryegrass, Virginia cutgrass, and jewelweed. [27] Stiltgrass can also be controlled by regular fires, thick leaf litter, and succession of taller herbs. [28] [29]
Bromus tectorum, known as downy brome, drooping brome or cheatgrass, is a winter annual grass native to Europe, southwestern Asia, and northern Africa, but has become invasive in many other areas. It now is present in most of Europe, southern Russia, Japan, South Africa, Australia, New Zealand, Iceland, Greenland, North America and western Central Asia. In the eastern US B. tectorum is common along roadsides and as a crop weed, but usually does not dominate an ecosystem. It has become a dominant species in the Intermountain West and parts of Canada, and displays especially invasive behavior in the sagebrush steppe ecosystems where it has been listed as noxious weed. B. tectorum often enters the site in an area that has been disturbed, and then quickly expands into the surrounding area through its rapid growth and prolific seed production.
Melilotus albus, known as honey clover, white melilot (UK), Bokhara clover (Australia), white sweetclover (US), and sweet clover, is a nitrogen-fixing legume in the family Fabaceae. Melilotus albus is considered a valuable honey plant and source of nectar and is often grown for forage. Its characteristic sweet odor, intensified by drying, is derived from coumarin.
Microstegium is a genus of African, Asian, and Pacific Island plants in the sorghum tribe within the grass family. Browntop is a common name.
Drechslera gigantea is a plant pathogen that causes eyespot disease on many host plants. There are Poa pratensis turfgrass cultivars that are resistant to D. gigantea, although that resistance is not as effective when stressed. In 2020, multilocus sequencing identified this pathogen as a member of the genus Bipolaris and proposed D. gigantea be transferred to Bipolaris gigantea.
Agrostis capillaris, the common bent, colonial bent, or browntop, is a rhizomatous and stoloniferous perennial in the grass family (Poaceae). It is native to Eurasia and has been widely introduced in many parts of the world. Colonial bent grows in moist grasslands and open meadows, and can also be found in agricultural areas, roadsides, and invading disturbed areas.
Eulalia is a genus of Asian, African, and Australian plants in the grass family.
Andropogon virginicus is a species of grass known by several common names, including broomsedge bluestem, yellowsedge bluestem and whiskey grass. It is native to the southeastern United States and as far north as the Great Lakes. It is known as an introduced species in California and Hawaii, where it is weedy.
Neonympha mitchellii is an endangered species of nymphalid butterfly of the eastern United States. There are two known subspecies:
Neyraudia reynaudiana, commonly known as Burma reed, silk reed, cane grass, or false reed, is a tall, perennial, large-plumed grass native to subtropical Asia, but invasive in southern Florida in the United States.
Arthraxon, commonly known as carpetgrass, is a genus of Asian, African and Australian plants in the grass family, Poaceae, containing the following species:
Cardamine micranthera is a rare species of flowering plant in the mustard family known by the common names small-anthered bittercress and streambank bittercress. It is endemic to the Piedmont region around the border between Virginia and North Carolina, and is today restricted to the Dan River watershed. It is in decline mainly because its habitat has been disturbed and destroyed by a number of processes. By the 1960s the only known populations of the plant had disappeared and in the 1970s it was feared extinct. The plant was rediscovered in the 1980s and for a while was presumed to be a rare North Carolina endemic; populations in Virginia have been confirmed since. The plant was federally listed as an endangered species in 1989 when it was known from only four tiny populations on unprotected private land. Today there are about 32 occurrences; one occurrence in North Carolina has been extirpated and five others there had no specimens found at the most recent survey.
Sisyrinchium dichotomum is a rare species of flowering plant in the iris family known by the common names wishbone blue-eyed grass, white irisette, and reflexed blue-eyed grass. It is native to North Carolina and South Carolina in the United States, where fewer than ten populations remain in four counties. It is threatened by the loss and degradation of its habitat and is a federally listed endangered species of the United States.
Solidago albopilosa is a rare species of flowering plant in the family Asteraceae known by the common name whitehair goldenrod. It is a perennial herb that is endemic to the state of Kentucky in the southeastern United States. It is threatened by recreational activities in its habitat and is a federally listed threatened species of the United States.
Hermeuptychia sosybius, the Carolina satyr, is a butterfly of the family Nymphalidae. It is found in the United States from southern New Jersey south along the coast to southern Florida, west to south-eastern Kansas, central Oklahoma and central Texas. It is also found in Mexico and Central America.
Xyris tennesseensis is a rare species of flowering plant in the family Xyridaceae known by the common name Tennessee yellow-eyed grass. It is native to a small section of the Southeastern United States, including parts of the states of Alabama, Georgia, and Tennessee. A federally listed endangered species, it is threatened by the loss and degradation of its habitat.
Synandra is a monotypic genus of flowering plants in the mint family containing the single species Synandra hispidula, which is known by the common name Guyandotte beauty. It is native to the east-central United States where it ranges from southern Illinois to western North Carolina and Virginia.
Hyparrhenia rufa is a species of grass known by the common names jaraguá, jaraguá grass, and giant thatching grass. It is native to Africa and it is widespread in the world as a cultivated forage and fodder for livestock and a naturalized and sometimes invasive species.
Lespedeza virginica, known as slender bush clover or slender lespedeza, is a species of flowering plant native to much of the United States, as well as Ontario, Canada, and Nuevo León, Mexico. It is a member of the bean family, Fabaceae.
Plantago virginica, common names hoary plantain and Virginia plantain, is a species of plant native to North America and introduced in Asia. It is listed as a special concern in Connecticut. The Kiowa use it to make garlands or wreaths for old men to wear around their heads during ceremonial dances as a symbol of health. It is commonly found within the continental United States in the majority of states along coastal areas and on roads, though has become an invasive species to eastern China after its introduction c. 1980. It is an annual plant, blooming around the month of May.