''Isocoma tenuisecta'', commonly called burroweed, shrine jimmyweed, or burrow goldenweed is a North American species of small, flowering perennial herbs in the family
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
. It is native to
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
,
New Mexico
)
, population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano)
, seat = Santa Fe
, LargestCity = Albuquerque
, LargestMetro = Tiguex
, OfficialLang = None
, Languages = English, Spanish ( New Mexican), Navajo, Ker ...
, and
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...
.
''Isocoma tenuisecta'' grows 1 to 3 feet (30–90 cm) tall. Leaves are narrowly lance-shaped, with numerous large teeth or small lobes along the edges. The leaves are
gland
In animals, a gland is a group of cells in an animal's body that synthesizes substances (such as hormones) for release into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland).
Structure
De ...
ular and lobed. The plant flowers in September through November, with clusters of heads at the ends of branches and on top of the main stem. Each head contains 8-15 yellow disc flowers but no ray flowers. The old heads turn dry and tan and remain on the plant after the achenes have dispersed.
Burroweed is poisonous to mammals, including cattle, which can transfer the poison to humans through milk.
Gallery
Image:Isocoma tenuisecta2.jpg
Image:Isocoma tenuisecta3.jpg
References
External links
photo of herbarium specimen at Missouri Botanical Garden, collected near Tucson in 1884
tenuisecta
Flora of Arizona
Flora of New Mexico
Flora of Sonora
Taxa named by Edward Lee Greene
{{Astereae-stub