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Juncus vaseyi was named and described by the German-American botanist George Engelmann in 1866. [2] The type specimen was collected a "few years" earlier by Dr. George Vasey along the Fox River near Ringwood, Illinois. [4] Since Vasey had "paid a good deal of attention to this genus", Engelmann named the species in his honor.
The flora has developed relatively recently, on its own, from western American sources. [2] During the glaciation of the last ice age , some peaks stood out above the ice sheet ( nunataks ), and thus have a high diversity of pre-ice age alpine plants ( relicts ), an example being the Dana Plateau at Tioga Pass .
It is expected to fill 30 volumes when completed and will be the first work to treat all of the known flora north of Mexico; [1] in 2015 it was expected that the series would conclude in 2017. [2] Twenty-nine of the volumes have been published as of 2022. [3] Soon after publication, the contents are made available online. [4] [5] [1]
The native status of common woodrush is under some debate. While Flora of North America list it as introduced, the more common opinion is it is a circumpolar species native in North America and in parts of Europe and Asia. [4] The taxonomy of the wood rush complex involving several Luzula spp. has a history of instability.
The native flora of the United States has provided the world with a large number of horticultural and agricultural plants, mostly ornamentals, such as flowering dogwood, redbud, mountain laurel, bald cypress, southern magnolia, and black locust, all now cultivated in temperate regions worldwide, but also various food plants such as blueberries ...
The WGSRPD defines Northern America differently from the usual geographical definition of North America. Central America and the Caribbean are treated as part of the botanical continent of Southern America; see Flora of Central America and Flora of the Caribbean. The flora of Hawaii is included in Flora of the Pacific.