''Litrisa'' is a

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 tribe

Eupatorieae Eupatorieae is a Tribe (biology), tribe of over 2000D.J.N.Hind & H.E.Robinson. 2007. Tribe Eupatorieae In: ''The Families and Genera of Vascular Plants'' vol.VIII. (Joachim W.Kadereit & Charles Jeffrey, volume editors. Klaus Kubitzky, general edi ...

within the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. Some taxonomists group ''Litrisa'' and ''

Trilisa ''Trilisa'' is a genus of flowering plants in the tribe Eupatorieae within the family Asteraceae. Some taxonomists group ''Trilisa'' and '' Litrisa'' into the genus ''Carphephorus''. ; Species * '' Trilisa odoratissima'' (J.F.Gmel.) Cass. - Lou ...

'' into the genus ''

Carphephorus ''Carphephorus'' is a genus of North American plants in the family Asteraceae. They are native to the southeastern United States from Louisiana to Virginia. Plants of this genus are known commonly as chaffheads.Flora of North America Vol. 21 Page 535 ''Carphephorus'' Cassini, Bull. Sci. Soc. Philom. Paris. 1816: 198. 1816.
/ref> ;Species There is only one known species, ''Litrisa carnosa'', called pineland chaffhead, native to the State of

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

.Flann, C (ed) 2009+ Global Compositae Checklist
Atlas of Florida Vascular Plants
/ref> It is a shrub up to 90 cm (3 feet) tall, covered with many small hairs and producing flat-topped

inflorescences In botany, an inflorescence is a group or cluster of flowers arranged on a plant's stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a main axis ( pe ...

of many small purplish

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 ...

References

Eupatorieae Endemic flora of Florida Monotypic Asteraceae genera Taxa named by John Kunkel Small {{Eupatorieae-stub