Nuevo registro de Begonia inermis (Begoniaceae) para la Flora Argentina y un nuevo sinónimo de B. fischeri

CHRISTIAN A. ZANOTTI; LUDOVIC J. KOLLMAN; KELLER, HÉCTOR

BOLETíN DE LA SOCIEDAD ARGENTINA DE BOTáNICA

SOCIEDAD ARGENTINA DE BOTÁNICA

Lugar: Córdoba; Año: 2020 vol. 55 p. 471 - 478

0373-580X

Background and aims: The floristic richness of the province of Misiones (Argentina)has been increased in recent years, since new species have been cited anddescribed for the region. The aims of this study were to revalidate and recordBegonia inermis Imrsch. (Begoniaceae) for the Argentinian flora and propose a newsynonym, B. hassleri C. DC., for B. fischeri Schrank.M&M: The new material collected and the new synonym were compared with theprotologues and original materials of each species (except the original material of B.fischeri that could not be located), and additional specimens were also studied. Themorphology was examined using optical microscopy. In addition, floras, taxonomictreatments and updated bibliography for the genus were reviewed.Results and conclusions: The description of the new record is presented, a mapwith its geographical distribution is added, and field photographs and a key toidentify the species of Begonia L. that inhabit Misiones are provided. The number ofBegonia species cited for the Argentinian Flora was not modified, since B. inermisis revalidate and also we treat B. hassleri as a synonym of B. fischeri. The ring oftrichomes at the apex of the petiole of B. inermis differentiates this species from theother species of Begonia that inhabit in Argentina.