Lectotypifications in Uruguayan Stevia (Asteraceae, Eupatorieae)

Abstract

Eleven species of Stevia were reported from Uruguay: S. aristata, S. burkartii, S. cinerascens, S. congesta, S. entreriensis, S. gratioloides, S. multiaristata, S. ophryodonta, S. sabulonis, S. satureiifolia, and S. selloi. Seven are shared with Argentina, five with Brazil, four with Paraguay, and two are endemic to Uruguay. During the revision of these species of Stevia, we detected names which need lectotypifications. As a result of our analysis four lectotypes are designated for names currently accepted in Stevia: S. congesta, S. gratioloides, S. polycephala (= Stevia aristata) and Dissothrix hassleriana (= Stevia entreriensis). We also clarified the original localities of type materials of S. congesta which occurs in Uruguay and, probably, in Brazil.

A revision and morphological analysis of the Uruguayan species of Stevia (Compositae, Eupatorieae)

“…According to our results, we recognize 10 species of Stevia instead of 11 previously cited for Uruguay (i.e., Freire 2008;Rodríguez-Cravero et al 2017). These ten species of Stevia are present in Uruguay: S. aristata, S. cinerascens, S. congesta, S. gratioloides, S. hirsuta, S. multiaristata, S. sabulonis, S. satureiifolia, S. selloi and S. veronicae. All the Uruguayan species of Stevia would belong to the series Multiaristatae (Candolle 1836; Grasshof et al 1972) for showing more than 14 bristles per cypsela (at least in the adelphocarps), that are as long as, or somewhat longer than, the corolla.…”

“…1). At the end of the twentieth century, King & Robinson (1987) considered seven species for Uruguay, and, more recently, Freire (2008) accepted 11 in a checklist, a criterion followed by Rodríguez-Cravero et al (2017) in a nomenclatural work (Tab. 1).…”

Stevia Mandonii (Asteraceae, Eupatorieae): Primer Registro Para La Flora Argentina Y Lectotipificación

“…es un género americano constituido por ca. 235 especies (King & Robinson, 1987;Soejima et al, 2001;Quaresma et al, 2013;Turner, 2013a;2013b;2015;Rodríguez-Cravero et al, 2017a;2019) que se caracterizan por presentar hábito herbáceo o arbustivo, involucro cilíndrico, eximbricado, con cinco filarios, cinco flores por capítulo, un anillo de tricomas erectos en el interior de la corola a nivel de la garganta, cipselas 5-costadas y un papus formado mayoritariamente por escamas y aristas (Robinson, 1930;Cabrera, 1978;King & Robinson, 1987). Se estima que al menos un tercio de las especies de Stevia presentan heterocarpía (Robinson, 1930), es decir, cuatro cipselas (adelfocarpos) con un tipo de papus y la quinta (idiocarpo) con un papus ausente o reducido por capítulo (King & Robinson, 1987;Hind & Robinson, 2007).…”

Praxelis clematidea (Asteraceae, Eupatorieae, Praxelinae) in Uruguay: first record of the genus and the species

“…Knowledge about the flora of southern South America varies according to the country or taxonomic group considered. In the case of Uruguay, several efforts have been made in recent years to catalogue the biodiversity of Asteraceae (Sancho et al, 2006;Hurrell, 2013;Trujillo et al, 2014;Valtierra & Bonifacino, 2014) and particularly of Eupatorieae (Pérez Sobrino, 2016;Rodríguez-Cravero et al, 2017; Rob. (Freire, 2008;Flora del Cono Sur, 2020).…”