''Tetraneuris argentea'', the perkysue, is a North American species of plants in the
sunflower family. It grows in the southwestern United States, primarily in
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 ...
and
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 ...
with additional populations in
Utah
Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...
,
Colorado
Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...
, and the
Texas Panhandle
The Texas Panhandle is a region of the U.S. state of Texas consisting of the northernmost 26 counties in the state. The panhandle is a square-shaped area bordered by New Mexico to the west and Oklahoma to the north and east. It is adjacent to ...
.
''Tetraneuris argentea'' is a perennial herb up to tall. It forms a branching underground
caudex
A caudex (plural: caudices) of a plant is a stem, but the term is also used to mean a rootstock and particularly a basal stem structure from which new growth arises.pages 456 and 695
In the strict sense of the term, meaning a stem, "caudex" is m ...
sometimes producing as many as 12 above-ground stems. One plant can produce as many as 30 flower heads. Each head has 8–14 yellow ray flowers surrounding 25-100 yellow disc flowers.
Flora of North America, ''Tetraneuris argentea'' (A. Gray) Greene, 1898.
/ref>
References
External links
photo of herbarium specimen at Missouri Botanical Garden, collected in New Mexico in 1847
argentea
Flora of the Southwestern United States
Plants described in 1849
{{medicinal-plant-stub