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