''Ambrosia monogyra'' is a species of flowering plant in the sunflower family commonly known as the singlewhorl burrobrush, leafy burrobush, slender burrobush, and desert fragrance. ''Ambrosia monogyra'' is native to North America and is typically found in canyons, desert washes, and ravines throughout arid parts of the

southwestern United States The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Ne ...

and northern Mexico. This species has green, threadlike leaves that emit a distinctive odor when crushed, and flowers from August to November. The fruits have distinctive wings in their middle that aid in dispersion through wind and water.

Description

''Am''s''rosia m''o''nogyra'' is a shrub tall. The leaves are very thin and thread-like, alternately arranged, and sometimes divided into thread-like lobes.Flora of North America Vol. 21 Page 12 Ambrosia monogyra (Torrey & A. Gray) Strother & B. G. Baldwin, Madroño. 49: 143. 2002
/ref> The staminate flowers have translucent white corollas and the

pistillate Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...

flowers are rounded, fruit-bearing structures. The fruit is an achene with a single whorl of several papery wings.

Distribution and habitat

The plant is native to the

, including the states of

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

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 ...

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

, and northern

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

, where it is found in

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

Baja California Sur Baja California Sur (; 'South Lower California'), officially the Free and Sovereign State of Baja California Sur ( es, Estado Libre y Soberano de Baja California Sur), is the least populated state and the 31st admitted state of the 32 federal ent ...

Chihuahua Chihuahua may refer to: Places *Chihuahua (state), a Mexican state **Chihuahua (dog), a breed of dog named after the state **Chihuahua cheese, a type of cheese originating in the state **Chihuahua City, the capital city of the state **Chihuahua Mun ...

Sinaloa Sinaloa (), officially the Estado Libre y Soberano de Sinaloa ( en, Free and Sovereign State of Sinaloa), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. It is d ...

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 ...

. Habitats it is found in include

California chaparral and woodlands The California chaparral and woodlands is a terrestrial ecoregion of southwestern Oregon, northern, central, and southern California (United States) and northwestern Baja California (Mexico), located on the west coast of North America. It is a ...

in the

Peninsular Ranges The Peninsular Ranges (also called the Lower California province) are a group of mountain ranges that stretch from Southern California to the southern tip of the Baja California peninsula; they are part of the North American Coast Ranges, which ...

Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most po ...

and northern Baja California. The plant also grows in washes and ravines in desert areas.Vascular Plants of the Gila Wilderness: ''Ambrosia monogyra''
/ref>

References

External links

Calflora Database: ''Ambrosia monogyra'' (singlewhorl burrobrush)

Jepson Manual eFlora (TJM2) treatment of ''Ambrosia monogyra''Calphotos Photo gallery, University of California: ''Ambrosia monogyra''
monogyra Flora of Arizona Flora of California Flora of Nevada Flora of Northwestern Mexico Flora of the South-Central United States Natural history of the California chaparral and woodlands Natural history of the Peninsular Ranges Plants described in 1849 Taxa named by Asa Gray Taxa named by John Torrey Flora without expected TNC conservation status {{Heliantheae-stub