''Pterocaulon'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s in the sunflower family, native to

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

and to

Australasia Australasia is a region that comprises Australia, New Zealand and some neighbouring islands in the Pacific Ocean. The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologica ...

. Blackroot is a common name for species native to North America. The plants are perennial herbs, frequently densely covered with woolly hairs. The generic name means "winged stem," referring to the

decurrent ''Decurrent'' (sometimes decurring) is a term used in botany and mycology to describe plant or fungal parts that extend downward. In botany, the term is most often applied to leaf blades that partly wrap or have wings around the stem or petio ...

leaf bases that give the appearance of wings running down the sides of the stems. ; SpeciesFlann, C (ed) 2009+ Global Compositae Checklist
Biota of North America Program 2013 county distribution maps
/ref> * '' Pterocaulon alopecuroides'' - South America, Puerto Rico, Virgin Islands * '' Pterocaulon angustifolium'' - Brazil, Argentina, Paraguay, Uruguay * '' Pterocaulon balansae'' - Brazil, Argentina, Paraguay, Uruguay * '' Pterocaulon cordobense'' - Brazil, Argentina, Paraguay, Uruguay * '' Pterocaulon globuliflorus'' - Western Australia, Northern Territory * '' Pterocaulon lanatum'' - Brazil, Bolivia, Paraguay,

Salta Salta () is the capital and largest city in the Argentine province of the same name. With a population of 618,375 according to the 2010 census, it is also the 7th most-populous city in Argentina. The city serves as the cultural and economic ce ...

* '' Pterocaulon lorentzii'' - Brazil, Argentina, Paraguay, Uruguay, Bolivia * '' Pterocaulon niveum'' - Western Australia, Northern Territory * '' Pterocaulon polypterum'' - Brazil, Argentina, Uruguay * '' Pterocaulon polystachyum'' - Brazil, Argentina, Paraguay, Uruguay * '' Pterocaulon purpurascens'' -

Mato Grosso Mato Grosso ( – lit. "Thick Bush") is one of the states of Brazil, the third largest by area, located in the Central-West region. The state has 1.66% of the Brazilian population and is responsible for 1.9% of the Brazilian GDP. Neighboring ...

, Argentina, Paraguay, Bolivia * '' Pterocaulon pycnostachyum '' - United States ( AL GA FL SC NC) * '' Pterocaulon redolens'' -

Indochina Mainland Southeast Asia, also known as the Indochinese Peninsula or Indochina, is the continental portion of Southeast Asia. It lies east of the Indian subcontinent and south of Mainland China and is bordered by the Indian Ocean to the west an ...

Hainan Hainan (, ; ) is the smallest and southernmost province of the People's Republic of China (PRC), consisting of various islands in the South China Sea. , the largest and most populous island in China,The island of Taiwan, which is slightly l ...

Orissa Odisha (English: , ), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of Sch ...

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

, Maluku,

New Guinea New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of ...

, eastern Australia * '' Pterocaulon rugosum'' - Brazil, Argentina, Paraguay * '' Pterocaulon serrulatum'' - Western Australia, Northern Territory, South Australia * '' Pterocaulon sphacelatum'' - Australia * '' Pterocaulon sphaeranthoides'' - Western Australia, Northern Territory, Queensland * '' Pterocaulon spicatum'' - South America * '' Pterocaulon verbascifolium'' - Western Australia, Northern Territory, Queensland * '' Pterocaulon virgatum'' -

Central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as ...

West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A ...

, United States ( TX LA)

References

Asteraceae genera Taxa named by Stephen Elliott {{Inuleae-stub