''Pericome'' is a small

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of flowering plants in the

daisy family Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger fam ...

. There are two species. '' Pericome caudata'' is native to the southwestern United States and northern Mexico, where it is relatively common. The second species, '' Pericome macrocephala'', is known only from

Durango Durango, officially the Free and Sovereign State of Durango, is one of the 31 states which make up the Political divisions of Mexico, 32 Federal Entities of Mexico, situated in the northwest portion of the country. With a population of 1,832,650 ...

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

at its type locality.Powell, A. M. (1973). Taxonomy of ''Pericome'' (Compositae: Peritylinae). ''The Southwestern Naturalist'' 18:3 335-9. These are branching perennial herbs or small

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s often exceeding one meter tall. They bear clusters of

flower heads A pseudanthium (; : pseudanthia) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, composite flowers ...

with golden disc florets.

References

External links

Jepson Manual TreatmentFlora of North America: ''Pericome''
Asteraceae genera Perityleae {{Asteroideae-stub