Isocoma humilis explained

Isocoma humilis, common names Zion goldenbush or Zion jimmyweed, is a rare North American plant species in the family Asteraceae. It has been found only in southern Utah in the United States. Some of the populations lie inside Zion National Park.[1]

Isocoma humilis is a low, branching shrub rarely more than 8round=0.5NaNround=0.5 tall. Herbage is covered with copious hairs. Leaves are narrow, oblong to oblanceolate, up to 50mm long, deeply lobed. Each flower head is up to 7mm wide (fairly large for the genus) and has 19-28 disc flowers but no ray flowers.[2] [3]

Notes and References

  1. http://bonap.net/MapGallery/County/Isocoma%20humilis.png Biota of North America Program 2014 county distribution map
  2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067012 Flora of North America, Isocoma humilis G. L. Nesom, 1991. Zion jimmyweed
  3. https://www.biodiversitylibrary.org/page/12981103#page/3/mode/1up Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114