Selected Plants of Navajo Rangelands
Mustard
Oostse’
Mustard plants can grow to about three feet in height. Several species from the mustard family can be found in the Navajo Nation. The most common are tansy mustard (Descurainia pinnata), which is native to the United States, and London rocket (Sisymbrium irio), which is introduced. While many members of this family are edible, some, such as tansy mustard, are poisonous to livestock. Most members of the mustard family have yellow or white flowers with four floral parts (petals, stamens, etc.). Many many species exist on the Navajo Nation.
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