''Haploesthes greggii'', common name false broomweed, is a North American species of flowering plants in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. It grows in northeastern Mexico ( Chihuahua,

Coahuila Coahuila, formally Coahuila de Zaragoza, officially the Free and Sovereign State of Coahuila de Zaragoza, is one of the 31 states of Mexico. The largest city and State Capital is the city of Saltillo; the second largest is Torreón and the thi ...

and

Nuevo León Nuevo León, officially the Free and Sovereign State of Nuevo León, is a Administrative divisions of Mexico, state in northeastern Mexico. The state borders the Mexican states of Tamaulipas, Coahuila, Zacatecas, and San Luis Potosí, San Luis ...

) and in the south-central and southwestern United States (

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

Oklahoma Oklahoma ( ; Choctaw language, Choctaw: , ) is a landlocked U.S. state, state in the South Central United States, South Central region of the United States. It borders Texas to the south and west, Kansas to the north, Missouri to the northea ...

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

; also historical reports of the species in

Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

and

Kansas Kansas ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the west. Kansas is named a ...

but very likely extirpated there). The genus name is sometimes spelled ''Haploësthes,'' with two dots over the first e to indicate that the o and the e are to be pronounced in separate syllables. This is optional; either spelling is equally acceptable.International Code of Nomenclature for algae, fungi, and plants (Melbourne Code)
section 60.6 ''Haploesthes greggii'' is a perennial herb or subshrub up to tall, somewhat succulent. Leaves are very narrow, sometimes thread-like. The plant produces numerous yellow flower heads in flat-topped arrays. Each head has 3–6 ray flowers and 18-100 disc flowers. ;VarietiesFlora of North America, Haploësthes A. Gray, 1849.
/ref> *''Haploesthes greggii'' var. ''greggii'' *''Haploesthes greggii'' var. ''texana'' (J.M.Coult.) I.M.Johnst.

References

External links

Photo of herbarium specimen collected in Nuevo León in 1996
Tageteae Flora of Chihuahua (state) Flora of Coahuila Flora of New Mexico Flora of Nuevo León Flora of Oklahoma Flora of Texas Plants described in 1849 Taxa named by Asa Gray Flora without expected TNC conservation status {{Asteroideae-stub