''Psilactis'' is a genus of

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

n 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 ...

n plants in the tribe

Astereae Astereae is a tribe of plants in the family Asteraceae that includes annuals, biennials, perennials, subshrubs, shrubs, and trees. They are found primarily in temperate regions of the world. Plants within the tribe are present nearly worldwide di ...

within the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

which are known by the common name tansyaster. There are six species within the genus.

Taxonomy

The genus contains six species: ''

Psilactis asteroides ''Psilactis'' is a genus of North American and South American plants in the tribe Astereae within the family Asteraceae which are known by the common name tansyaster. There are six species within the genus. Taxonomy The genus contains six spec ...

'', '' Psilactis brevilingulata'', '' Psilactis gentryi'', '' Psilactis heterocarpa'', '' Psilactis odysseus'', and ''

Psilactis tenuis ''Psilactis'' is a genus of North American and South American plants in the tribe Astereae within the family Asteraceae which are known by the common name tansyaster. There are six species within the genus. Taxonomy The genus contains six sp ...

''. Formerly included in the genus were ''Psilactis coulteri'' and ''Psilactis crispa'' which are now placed in genus '' Leucosyris'' as '' L. coulteri'' and '' L. crispa'', respectively. Additionally, ''Psilactis lepta'' has been determined to be a taxonymic synonym of ''Psilactis asteroides''.

Distribution

Five species within the genus have

native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...

distribution in

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 ...

. ''Psilactis heterocarpa'' is restricted to

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 ...

in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

with no Mexican distribution. ''P. odysseus'' is restricted to the Mexican states

Nuevo León Nuevo León () is a state in the northeast region of Mexico. The state was named after the New Kingdom of León, an administrative territory from the Viceroyalty of New Spain, itself was named after the historic Spanish Kingdom of León. With a ...

and

Tamaulipas Tamaulipas (), officially the Free and Sovereign State of Tamaulipas ( es, Estado Libre y Soberano de Tamaulipas), is a state in the northeast region of Mexico; one of the 31 states which, along with Mexico City, comprise the 32 Federal Entiti ...

, and the other four species, ''P. asteroides'', ''P. brevilingulata'', ''P. gentryi'', and ''P. tenuis'' have distributions in both Mexico and the United States. ''P. brevilingulata'' has an additional presence in

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

and

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

Citations

References

* * * * {{Taxonbar, from=Q7255799 Astereae Asteraceae genera