Sistemática de Cordiaceae en Argentina II: Las especies del género Varronia

Pablo Moroni; Nataly O'Leary; María Gabriela Nadra; James S. Miller

doi:10.14522/darwiniana.2022.102.1063

Authors

Pablo Moroni Instituto de Botánica Darwinion (ANCEFN-CONICET), Labardén 200, CC 22, B1642HYD San Isidro, Buenos Aires, Argentina. https://orcid.org/0000-0001-5306-476X
Nataly O'Leary Instituto de Botánica Darwinion (ANCEFN-CONICET), Labardén 200, CC 22, B1642HYD San Isidro, Buenos Aires, Argentina. https://orcid.org/0000-0001-7414-3416
María Gabriela Nadra Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, 4000 San Miguel de Tucumán, Tucumán, Argentina. https://orcid.org/0000-0002-9809-7183
James S. Miller Missouri Botanical Garden, P.O. Box 299, St. Louis, 63166-0299 Missouri, U.S.A.

DOI:

https://doi.org/10.14522/darwiniana.2022.102.1063

Keywords:

Argentine flora, Boraginales, Southern Cone

Abstract

A taxonomic treatment for Varronia P. Browne (Cordiaceae, Boraginales) in Argentina is presented for the first time. The genus consists of shrubs or subshrubs up to 5 m tall that are distributed mainly in the Neotropics. Plants are characterized by being multi-stemmed shrubs with flowers arranged into capitate or pseudospiciform inflorescences with a distinctly 2-branched style. The analyses of the morphological features support the recognition of six Varronia species in the country. A key to all Argentinian species, illustrations to aid identification both in herbaria and in the field, and distribution maps are provided. Synonymy, morphological descriptions, nomenclatural aspects, common names and uses are also provided. Varronia urticifolia is reported for the first time in Argentina and V. curassavica in La Rioja province.