Parthenium

These include: • Parthenium alpinum (Nutt.) Torr. & A.Gray – Arkansas River feverfew - NM CO WY • Parthenium argentatum A.Gray – Guayule - TX, Coahuila, Guanajuato, Nuevo León, San Luis Potosí, Zacatecas • Parthenium cineraceum Rollins - Bolivia, Paraguay • Parthenium confertum A.Gray – Gray's feverfew - AZ NM TX Chihuahua, Coahuila, Nuevo León, San Luis Potosí, Querétaro, Tamaulipas • Parthenium fruticosum Less. - from Tamaulipas to Chiapas • Parthenium hysterophorus L. – Santa Maria feverfew, whitetop weed - widespread in North + South America; as an invasive species in India, Australia, and Africa • Parthenium incanum Kunth – mariola - NV UT AZ NM TX Chihuahua, Coahuila, Durango, Hidalgo, Nuevo León, San Luis Potosí, Zacatecas • Parthenium integrifolium L. – American feverfew, wild quinine - from TX to MA + MN • Parthenium ligulatum (M.E. Jones) Barneby – Colorado feverfew - CO UT • Parthenium rollinsianum Rzed. - San Luis Potosí • Parthenium schottii Greenm. ex Millsp. & Chase - Yucatán • Parthenium tomentosum DC. - Oaxaca, Puebla ==Importance==

In North America, the Jicarilla Apache people used Parthenium incanum for medicine (Opler 1946: 8). The sap of guayule (P. argentatum) is a source of natural rubber. Parthenium hysterophorus is a common invasive species in India, Australia, and parts of Africa. Its pollen can cause allergies and the sap is toxic. ==Gallery==

Image:Parthenium argentatum (USDA).jpg|Parthenium argentatum File:Parthenium IMG20200104105005.jpg Image:Parthenium integrifolium wild quinine MN 2007.JPG|Wild quinine (Parthenium integrifolium) '' in Achanakmar Tiger Reserve ==References==