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Isocoma rusbyi, the Rusby's goldenbush,[2] is a North American species of plants in the family Asteraceae. It has been found in the States of Arizona, Utah, New Mexico, and Colorado in the southwestern United States. Some of the populations lie inside Grand Canyon and Petrified Forest National Parks, others in the Glen Canyon National Recreation Area.[3][4][5]

Isocoma rusbyi
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Isocoma
Species:
I. rusbyi
Binomial name
Isocoma rusbyi
Greene 1906
Synonyms[1]

Haplopappus rusbyi (Greene) Cronquist

Isocoma rusbyi is a shrub up to 90 cm (3 feet) tall. Each flower head contains about 19-25 disc flowers but no ray flowers.[3][6]


References


  1. The Plant List, Isocoma rusbyi Greene
  2. USDA, NRCS (n.d.). "Isocoma rusbyi". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 7 August 2015.
  3. Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114 description of I. rusbyi on pages 106-107, distribution map on page 75
  4. Biota of North America Program 2014 county distribution map
  5. SEINet, Southwestern Biodiversity, Arizona chapter
  6. Flora of North America, Isocoma rusbyi Greene, 1906. Rusby’s jimmyweed


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