Ivesia kingii

Kartesz (1994 checklist or 1999 floristic synthesis) does not recognize varieties in this species; however, USFWS recognizes var. eremica as distinct from the typical var. kingii. As Kartesz notes (in letter to Larry Morse, 25Nov99), he reviewed all of the available Nevada collections and concluded that "this [var. eremica] is nothing more than an extremely variable expression of Ivesia kingii." FNA (2014, vol. 9) recognizes var. eremica as a distinct variety.

Ivesia kingii is known from Inyo and Mono Counties, California, and from Nevada and Utah. The typical variety occurs throughout this range, while I. kingii var. eremica is an endemic of Ash Meadows in southern Nye County, Nevada. There are nine extant occurrences recorded for Ivesia kingii var. eremica in Nevada. I. kingii var. kingii is known in California from fewer than ten occurrences, but is apparently more common in Nevada and Utah. Ivesia kingii var. eremica is highly endangered by development, agriculture, and damage by wild horses, and was formerly threatened by the proposed MX missile project (ca. 1980). I. kingii var. kingii is threatened by vehicle activity and possibly grazing.

Ivesia kingii var. eremica is an endemic of Ash Meadows in southern Nye County, Nevada. I. kingii var. kingii is known from Inyo and Mono Counties, California, and from Nevada and Utah (Skinner 1997).

Ivesia kingii var. kingii is known from California, Nevada, and Utah, with var. eremica endemic to the Ash Meadows area of Nevada. There are nine extant occurrence records for Ivesia kingii var. eremica in Nevada (Nevada Natural Heritage Program 1999). I. kingii var. kingii is known in California from fewer than ten occurrences (Skinner 1997).

Ivesia kingii var. eremica is highly endangered by development; agriculture, damage by wild horses, and (formerly, ca. 1980) MX missile construction also pose threats. I. kingii var. kingii is threatened by vehicles and possibly grazing (Skinner 1997).