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Hemerocallis fulva var. fulva has escaped from cultivation across much of the United States and parts of Canada and has become a weedy or invasive species. [9] It persists also where dumped and spreads more or less rapidly by vegetative increase into woods and fields and along roadsides and ditches, hence its common name ditch lily.
A cultivar must meet certain criteria in order to be recognised by UPOV as a named variety. In a few lists, variety means something else: a taxonomic rank below that of species (a kind of subspecies). If the species' binomial name is followed by the word var. and another name, that is a botanical variety, not a cultivar.
Magnolia fulva is a species of flowering plant in the family Magnoliaceae, native to south-central China and Vietnam. [2] It was first described, as Michelia fulva, in 1987. [5] Two varieties are recognized: [2] Magnolia fulva var. calcicola (C.Y.Wu ex Y.W.Law & Y.F.Wu) ined. Magnolia fulva var. fulva
Variety is defined in the code as follows: "Variety (varietas) the category in the botanical nomenclatural hierarchy between species and form (forma)". The code acknowledges the other usage as follows: "term used in some national and international legislation for a clearly distinguishable taxon below the rank of species; generally, in ...
The North American red foxes have been traditionally considered either as subspecies of the Old World red foxes or subspecies of their own species, V. fulva.Due to the opinion that North American red foxes were introduced from Europe, all North American red foxes have been seen as conspecific with V. vulpes; [2] however, genetic analyses of global red fox haplotypes indicates that the North ...
Over the next hundred years, thousands of different hybrids were developed from only a few wild varieties. In fact, most modern hybrids are descended from two types of daylily. One is Hemerocallis flava—the yellow lemon lily. The other is Hemerocallis fulva, the familiar tawny-orange daylily, also known affectionately as the "ditch lily". [12]
The IUCN also lists 244 subspecies and 235 varieties as Vulnerable. No subpopulations of plants have been evaluated by the IUCN. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild".
[4] [5] [6] The only known species is Arctophila fulva, commonly known as pendant grass, native to northern parts of Eurasia and North America (Russia, Finland, Sweden, Svalbard, Greenland, Alaska, Canada).