''Psathyrotes'' 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 plants in the sneezeweed tribe within the sunflower family. It contains

annual Annual may refer to: * Annual publication, periodical publications appearing regularly once per year **Yearbook ** Literary annual * Annual plant * Annual report * Annual giving * Annual, Morocco, a settlement in northeastern Morocco * Annuals (b ...

and

perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

forb A forb or phorb is an herbaceous flowering plant that is not a graminoid (grass, sedge, or rush). The term is used in biology and in vegetation ecology, especially in relation to grasslands and understory. Typically these are dicots without woo ...

s and low

subshrub A subshrub (Latin ''suffrutex'') or dwarf shrub is a short shrub, and is a woody plant. Prostrate shrub is a related term. "Subshrub" is often used interchangeably with "bush".Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Der ...

s native to dry areas of southwestern

. Common names include turtleback, brittlestem, and fanleaf. The plants are low, densely branching, hairy, and scaly, with a

turpentine Turpentine (which is also called spirit of turpentine, oil of turpentine, terebenthene, terebinthine and (colloquially) turps) is a fluid obtained by the distillation of resin harvested from living trees, mainly pines. Mainly used as a special ...

-like odor. Leaves are alternate and hairy. The Latin name of the genus (from the Greek ''psathurotes'') refers to the brittleness of the stems. ;SpeciesBiota of North America Program 2013 county distribution maps
/ref> * ''

Psathyrotes annua ''Psathyrotes annua'' is a species of flowering plant in the aster family known by the common names annual psathyrotes, turtleback, or mealy rosettes. It is native to the southwestern United States and as far north as Idaho. It grows in desert an ...

'' (Nutt.) Gray (annual psathyrotes, mealy rosettes, turtleback) - CA NV UT AZ ID ** Synonyms: ''Bulbostylis annua'' Nutt. ** Annual or perennial forb * '' Psathyrotes pilifera'' Gray (hairy-beast turtleback, hairybeast brittlestem) - NV UT AZ ** Annual forb * '' Psathyrotes ramosissima'' (Torr.) Gray (velvet rosette, velvet turtleback, turtleback) - NV UT AZ CA,

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 ...

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 ...

** Synonyms: ''Tetradymia ramosissima'' Torr. ** Annual or perennial forb or subshrub ;formerly included see ''

Peucephyllum ''Peucephyllum'' is a monotypic genus of flowering plants containing the single species ''Peucephyllum schottii''. Its common names include pygmy cedar,Psathyrotopsis ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * '' Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * '' Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * '' Psathyrot ...

Trichoptilium ''Trichoptilium'' is a monotypic genus containing the single species ''Trichoptilium incisum'', which is known by the common names yellowdome and yellowhead. This is a plant in the daisy family which is native to the Mojave and Sonoran Deserts ...

'' * ''Psathyrotes incisa'' A.Gray - '' Trichoptilium incisum'' (A.Gray) A.Gray * ''Psathyrotes purpusii'' Brandegee - ''

Psathyrotopsis purpusii ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * ''Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * '' Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * '' Psathyroto ...

'' (Brandegee) Rydb. * ''Psathyrotes scaposa'' A.Gray - ''

Psathyrotopsis scaposa ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * ''Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * ''Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * '' Psathyrotop ...

'' (A.Gray) H.Rob. * ''Psathyrotes schottii'' (A.Gray) A.Gray - '' Peucephyllum schottii'' A.Gray

References

External links

ITIS report

Jepson Manual treatment''Psathyrotes ramosissima''
at Calflora {{Taxonbar, from=Q3003851 Asteraceae genera Helenieae Flora of North America