''Isocoma rusbyi'', the Rusby's goldenbush, 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
The Grand Canyon (, yuf-x-yav, Wi:kaʼi:la, , Southern Paiute language: Paxa’uipi, ) is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is long, up to wide and attains a depth of over a m ...
and
Petrified Forest National Park
Petrified Forest National Park is an American national park in Navajo County, Arizona, Navajo and Apache County, Arizona, Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about , encompassin ...
s, others in the
Glen Canyon National Recreation Area.
[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
''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.
[Flora of North America, Isocoma rusbyi Greene, 1906. Rusby’s jimmyweed ]
/ref>
References
rusbyi
Endemic flora of the United States
Flora of Arizona
Flora of Colorado
Flora of New Mexico
Flora of Utah
Flora of the Colorado Plateau and Canyonlands region
Plants described in 1906
Taxa named by Edward Lee Greene
Flora without expected TNC conservation status
{{Astereae-stub