Abstract
Se describe e ilustra Gutierrezia tortosae Ratto & Adr. Bartoli, una nueva especie de Argentina. Se asemeja a Gutierrezia mandonii (Sch. Bip.) Solbrig por presentar xilopodio, por la forma de las hojas y por el color amarillo de las flores liguladas, pero difiere de ella por tener tallos erectos y rígidos, hojas erectas y capítulos menores. Se presenta una clave para diferenciarla de las especies que habitan en el noroeste de Argentina.
Highlights
Gutierrezia Lag. is an American genus, with disjunct distribution in North and South America
In Argentina, according to Zuloaga & Morrone (1999) and Zuloaga et al (2008), the genus Gutierrezia grows from Jujuy to Territorio Nacional de Tierra del Fuego and is represented by eight species of which six are endemic
During the revision of South American species of the genus Gutierrezia we found some unusual herbarium specimens from the provinces of Jujuy and Salta that appeared to be different from other species of Gutierrezia that grow in these provinces—G. repens Griseb. and G. mandonii
Summary
Gutierrezia Lag. is an American genus, with disjunct distribution in North and South America. A new species of Gutierrezia (Asteraceae, Astereae) from Argentina. In Argentina, according to Zuloaga & Morrone (1999) and Zuloaga et al (2008), the genus Gutierrezia grows from Jujuy to Territorio Nacional de Tierra del Fuego and is represented by eight species of which six are endemic. During the revision of South American species of the genus Gutierrezia we found some unusual herbarium specimens from the provinces of Jujuy and Salta that appeared to be different from other species of Gutierrezia that grow in these provinces—G. repens Griseb.
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