Question: Which is native to farther west, Anthotroche or Lomatium?
Context: The Monashee Mountains are a mountain range lying mostly in British Columbia, Canada, extending into the U.S. state of Washington.  They stretch 530 km from north to south and 150 km from east to west.  They are a sub-range of the Columbia Mountains.  They are limited on the eastern side by the Columbia River and Arrow Lakes, beyond which lie the Selkirk Mountains, and by the upper North Thompson River and the Interior Plateau on the west.  The northern end of the range is at the southern end of the Robson Valley just south of the town of Valemount.  The southern extremity of the range is in Washington State, where the Kettle River Range reaches just down to the confluence of the Kettle River and the Columbia, and also farther west to the southern extremity of the Okanagan Highland (spelled Okanogan Highland in the US) just northeast of the confluence of the Okanogan and Columbia rivers at Brewster and Bridgeport. Lomatium martindalei is a species of flowering plant in the carrot family known by the common names Cascade desertparsley and coast range lomatium.  It is native to the west coast of North America, from Vancouver Island south to the Klamath Mountains of far northern California.  It can be found in a number of coastal and inland habitats, from coastal plains to high mountain talus and meadows.  This is a perennial herb growing 15 to 40 centimeters tall from a carrot-like taproot.  There is often no stem, the erect or spreading leaves and inflorescence emerging from ground level.  The thinly fleshy leaves may approach 20 centimeters long, their blades divided into leaflets made up of many small oval segments.  The inflorescence bears an umbel of small yellowish flowers. Lomatium plummerae (Plummer's lomatium) is a perennial plant in the carrot family (Apiaceae).  Former subspecies "L. plummerae" var.  "sonnei" was reclassified as its own species, "Lomatium austinae".  "Lomatium plummerae" is found mostly in California where it is native. Eureka is a small research base on Fosheim Peninsula, Ellesmere Island, Qikiqtaaluk Region, in the Canadian territory of Nunavut.  It is located on the north side of Slidre Fiord, which enters Eureka Sound farther west.  It is the third-northernmost permanent research community in the world.  The only two farther north are Alert, which is also on Ellesmere Island, and Nord, in Greenland.  Eureka has the lowest average annual temperature and the lowest amount of precipitation of any weather station in Canada. Lomatium is a genus of about 75 species of perennial herbs native to western North America.  In the Apiaceae family and related to many edible species such as carrots and celery, it is also edible.  The common names for it are biscuitroot, Indian parsley, and desert parsley, and was extensively used by Indians in the inland northwest as a staple food. The Acolapissa were a small tribe of Native Americans.  Traditions have them living on the shores of the Pearl River, between Louisiana and Mississippi before 1702.  This made them one of four tribes, along with the Bayogoula, Biloxi, and Pascagoula who inhabited the Gulf coast of what is now the state of Mississippi at the time of the European arrival.  After that time, they moved farther west, into the area around the future New Orleans.  Pressured by European settlement of the area and disease, the small tribe eventually merged into the Houma, which now live in and around Houma, Louisiana.  Estimates put the current population of the Houma tribe at around 11,000 people.  The U.S. government denied a petition for Federal status for the Houma in 1994. Lomatium bradshawii, also known as Bradshaw's desert parsley, is an endangered perennial herb native to Oregon and Washington, United States.  "Lomatium bradshawii" was thought to be extinct until 1979, when it was rediscovered by a University of Oregon graduate.  This herb was common in the Willamette Valley before agricultural development and fire prevention which has allowed shrubs and weeds to invade.  Most known populations of "Lomatium bradshawii" are within ten miles of Eugene, Oregon.  In the Willamette Valley, populations exist in the Oregon counties Lane, Benton, Linn, and Marion, and in Washington "Lomatium bradshawii" grows in Puget Sound.  The largest population of this herb is in Camas Meadows, Washington, with a population of 10,7900,00 +/- 2,010,000, and the Berry Botanic Garden keeps a seedbank. Anthotroche is a genus of shrubs in the family Solanaceae.  The genus is endemic to Western Australia. Lomatium grayi, commonly known as Gray's biscuitroot, Gray's lomatium, or milfoil lomatium, is a perennial herb of the family Apiaceae.  It is native to Western Canada in British Columbia, and the Western United States, including from the Eastern Cascades and northeastern California to the Rocky Mountains. Arnoglossum reniforme (great Indian plantain) is a North American species of plants in the sunflower family.  It is native to the central and east-central United States primarily in the Appalachian Mountains, the Ohio/Tennessee Valley, and the Mississippi Valley.  There are additional populations in the east (New Jersey, Maryland, Pennsylvania, South Carolina) and farther west in Oklahoma.
Answer: Lomatium