''Scleropogon'' is a monotypic genus of

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

which includes the sole species ''Scleropogon brevifolius'', or burrograss. This grass is found in two areas of the world, in North America from the southwestern United States to central

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 ...

and in South America in

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

and

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

. This is a perennial mat-forming grass with sharp, tufted leaves and firm awns. This grass may be

dioecious Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproductio ...

, with staminate and

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'' ...

plants growing in separate colonies.

References

External links

Jepson Manual Treatment

USDA Plants Profile

Grass Manual Treatment
Grasses of Argentina Grasses of Mexico Grasses of the United States Native grasses of California Flora of South America Flora of Northwestern Mexico Flora of the Southwestern United States Flora of the California desert regions Flora without expected TNC conservation status Plants described in 1880 Taxa named by Rodolfo Amando Philippi {{Chloridoideae-stub