Isocoma humilis

Summary

Isocoma humilis, common names Zion goldenbush[2] or Zion jimmyweed,[3] 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.[4][5]

Isocoma humilis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Isocoma
Species:
I. humilis
Binomial name
Isocoma humilis
G.L.Nesom 1991 not Haplopappus humilis Reiche 1902
Synonyms[1]

Haplopappus leverichiic Cronquist 1994

Isocoma humilis is a low, branching shrub rarely more than 8 cm (3 in) tall. Herbage is covered with copious hairs. Leaves are narrow, oblong to oblanceolate, up to 50 mm (2.0 in) long, deeply lobed. Each flower head is up to 7 mm (0.28 in) wide (fairly large for the genus) and has 19-28 disc flowers but no ray flowers.[3][5]

References edit

  1. ^ The Plant List, Isocoma humilis G.L.Nesom
  2. ^ USDA, NRCS (n.d.). "Isocoma humilis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 7 August 2015.
  3. ^ a b Flora of North America, Isocoma humilis G. L. Nesom, 1991. Zion jimmyweed
  4. ^ Biota of North America Program 2014 county distribution map
  5. ^ a b 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