Winteraceae do Rio Grande do Sul, Brasil

Abstract

ResumoWinteraceae apresenta cinco gêneros, dos quais apenas Drimys ocorre na região neotropical. A taxonomia das espécies ocorrentes no Brasil ainda é controversa e dependendo do autor, são aceitas de uma a três espécies. O presente trabalho apresenta o estudo taxonômico de Winteraceae no Rio Grande do Sul, e visa esclarecer acerca das espécies da família no estado. Foram feitas revisões de herbários nacionais e internacionais, além de coletas em diversos pontos do estado para o levantamento de dados para o tratamento taxonômico e a análise morfométrica (ANOVA). Com base nas análises morfométricas, dados fenológicos e morfológicos, aceitamos a ocorrência de duas espécies no Rio Grande do Sul: Drimys angustifolia e D. brasiliensis. É fornecida uma chave de identificação, descrições, comentários, fenologia e ilustrações de ambos os táxons. Palavras-chave: Canellales, Drimys, elemento austro-antártico, Magnoliidae, morfometria. AbstractWinteraceae presents five genera, of which only Drimys occurring in the Neotropics. The taxonomy of the Brazilian species is still controversial, and depending on the author, one to three species is accepted. This paper presents the taxonomic study of Winteraceae in the state of Rio Grande do Sul, and aims to elucidate the Winteraceae species for the region. Revision of national and international herbaria, and collections in several places of the state were made in order to gather data for the taxonomic treatment and the morphometrics analysis (ANOVA). Based on the morphometric analyses, phenological and morphological data, two species are accepted for Rio Grande do Sul: Drimys angustifolia and D. brasiliensis. We provide an identification key, descriptions, commentaries, phenology and illustrations for both taxa.

Impact of Climate Change on the Geographical Distribution of a Cloud Forest Indicator Tree Species

“…Future (2061-2080 considered as a highly sensitive species, because the area of climatic suitability for this species was estimated to decline by 68 to 79%, in response to a climate change towards more tropical conditions (warmer and wetter) in the future. Previous studies have shown that one of the responses of diff erent terrestrial species to past and present climate change is to shift their distribution towards higher altitudes and latitudes (Chen et al, 2011;Hickling et al, 2006;Kelly and Goulden, 2008). However, for species already restricted to areas of higher altitude, such as D. angustifolia, this strategy is not possible, which renders these species more susceptible to the impacts of climate change, like the upper-montane ecosystem itself.…”

“…D. angustifolia was present in 15 areas and was selected as an indicator species because it has a broad distribution in the specifi ed areas and predominantly occurs at the highest points of southern Brazil (https://fi gshare.com/s/0ad8dd97528c3403b25f). According to Hertzog et al (2016), in Rio Grande do Sul State, in southern Brazil, D. angustifolia occurs from 700 to 1,400 m altitude. Furthermore, observations of its geographical area of distribution show that this species has a higher occurrence above 1,000 m altitude (Martins et al, 2012;Silva et al, 2017).…”

Description of three new species of Phyllocnistis Zeller, 1848 (Lepidoptera: Gracillariidae), from the Atlantic Forest, south Brazil, with notes on natural history and phylogeny

“…Furthermore, the absence of vessel elements led them to be considered a group with ancestral characteristics among angiosperms (Hertzog et al . ).…”

Flora da Bahia: Winteraceae

“…; sépalas 2,2-5 × 3,5-5 mm, orbiculares ou oval-arredondadas, verdes a vináceas, persistentes no fruto; pétalas brancas, 6-12 × 1,8-2,1 mm, elípticas a oblongas, as da série mais externa maiores; estames numerosos, filetes e anteras amarelos, ca. Nascimento et al 2010;Hertzog et al 2016). D7, E6, F6: campo rupestre; H8: floresta atlântica.…”

“…Drimys brasiliensis é facilmente identificada na Bahia pelo porte arborescente e as flores brancas e vistosas. Ehrendorfer et al (1979) uso da madeira (veja o comentário do gênero), D. brasiliensis também tem suas folhas e casca utilizadas na medicina popular do Rio Grande do Sul, funcionando como estimulante, antidiarreica, antifebril e antihemorrágica (Simões et al 1986;Hertzog et al 2016).…”