''Isocoma humilis'', common names Zion goldenbush or Zion jimmyweed, is a rare North American plant species in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

. It has been found only in southern

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

in the United States. Some of the populations lie inside Zion National Park.Biota of North America Program 2014 county distribution map
/ref> ''Isocoma humilis'' is a low, branching shrub rarely more than tall. Herbage is covered with copious hairs. Leaves are narrow, oblong to oblanceolate, up to long, deeply lobed. Each flower head is up to wide (fairly large for the genus) and has 19-28 disc flowers but no ray flowers.Flora of North America, ''Isocoma humilis'' G. L. Nesom, 1991. Zion jimmyweed
/ref>Nesom, G.L. 1991. Taxonomy of ''Isocoma'' (Compositae: Astereae). Phytologia 70(2): 69–114
description of ''I. humilis'' on pages 92-93, distribution map on page 73

References

{{Taxonbar, from=Q15592367 humilis Flora of Utah Endemic flora of the United States Plants described in 1991 Flora without expected TNC conservation status