A new species of Diplostephium (Asteraceae, Astereae) from the Atacama Desert, Chile

Abstract

A new species, Diplostephium paposanum S.T.Ibáñez & Muñoz-Schick, sp. nov., is described for Chile, extending the southern distribution of the genus. Its position within the genus was confirmed by morphological and molecular data, discussed here. The new species was found in a coastal environment, new to the genus, and is geographically far removed from the other Chilean species, which are from the Andes. The formation where it occurs, known as lomas, acts as a biodiversity refuge in hyperarid environments. The presence of D. paposanum in this environment contributes to the evidence of a floristic connection between the Atacama Desert and the Neotropical Andes.

A new species, Aster yaoshanensis (Asteracae, Astereae), from Guangxi (China), based on morphology and molecular phylogenetic data

“…Conservation status . According to the IUCN, 2024 categories and criteria, newly described species with a restricted distribution area are often considered in a threat category (CR, EN, VU) ( Zhang et al., 2019 ; Blasco et al., 2021 ; Wagensommer and Venanzoni, 2021 ; Ibáñez et al., 2022 ), but more exploration in the occurring area of the new species is necessary for defining the distribution, population size, threats, etc., before being able to assess the conservation status of A. yaoshanensis . The new species is currently only found in rock crevices of mountain valleys in Dayaoshan National Nature Reserve.…”