Trillium (trillium, wakerobin, tri flower, birthroot, birthwort) is a genus of perennial flowering plants native to temperate regions of North America and Asia.
It was formerly treated in the family Trilliaceae or trillium family, a part of the Liliales or lily order. The APG III system includes Trilliaceae in the family Melanthiaceae, where can be treated as the tribe Parideae.
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Description
Plants of this genus are perennial herbs growing from rhizomes. They produce scapes which are erect and straight in most species. There are three large bracts arranged in a whorl about the scape. There are no true aboveground leaves. There are sometimes scalelike leaves on the underground rhizome. The leaflike bracts are photosynthetic and are sometimes called leaves. The inflorescence is a single flower. There are two subgenera. In T. subg. Trillium the flowers are mostly borne on a short stalk (pedicellate) whereas in T. subg. Phyllantherum the flowers are born directly on the bracts (sessile). The flower has three green or reddish sepals and usually three petals in shades of red, purple, pink, white, yellow, or green. There are six stamens at the center. There are three stigmas that are borne on a very short style, if any. The fruit is fleshy and capsule-like or berrylike. The seeds have large, oily elaiosomes.
Rarely, individuals have four-fold symmetry, with four bracts (leaves) and four petals in the blossom.
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Species
Accepted Species
Ecology
Trilliums are myrmecochorous, with ants as agents of seed dispersal. Ants are attracted to the elaiosomes on the seeds and collect them and transport them away from the parent plant. The seeds of Trillium camschatcense and T. tschonoskii, for example, are collected by the ants Aphaenogaster smythiesi and Myrmica ruginodis. Sometimes beetles interfere with the dispersal process by eating the elaiosomes off the seeds, making them less attractive to ants.
Conservation
Picking parts off a trillium plant can kill it even if the rhizome is left undisturbed. Some species of trillium are listed as threatened or endangered and collecting these species may be illegal. Laws in some jurisdictions may restrict the commercial exploitation of trilliums and prohibit collection without the landowner's permission. In the US states of Oregon, Michigan and Minnesota it is illegal to pick trilliums. In New York it is illegal to pick the red trillium.
It is illegal to in any way injure the common Trillium grandiflorum (white trillium) in Ontario, though there are two exceptions: a person will not be fined if the person is a public works employee carrying out their job on public land, or the person is a private citizen carrying out "necessary work" on land the person owns or lawfully occupies. The rare Trillium flexipes (drooping trillium) is also protected by law in Ontario, because of its very small Canadian population.
High white tail deer population density decreases or eliminates trillium in an area.
Medicinal uses
Several species contain sapogenins. They have been used traditionally as uterine stimulants, the inspiration for the common name birthwort. In a 1918 publication, Joseph E. Meyer called it "beth root", probably a corruption of "birthroot". He claimed that an astringent tonic derived from the root was useful in controlling bleeding and diarrhea.
Culture
A white trillium serves as the emblem and official flower of the Canadian province of Ontario. It is an official symbol of the Government of Ontario. The large white trillium is the official wildflower of Ohio.; in light of their shared connection to the flower, the Major League Soccer teams in Toronto and Columbus compete with each other for the Trillium Cup.
Source of the article : Wikipedia
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