Winteraceae in the state of Rio Grande do Sul, Brazil

Winteraceae 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.

林仙科（Winteraceae）共包含5个属，其中仅林仙属（Drimys）分布于新热带区（Neotropics）。巴西境内林仙科类群的分类学研究仍存在争议，不同学者认可的物种数量为1至3种不等。本研究针对南里奥格兰德州（Rio Grande do Sul）的林仙科类群开展分类学研究，旨在明确该区域内的林仙科物种组成。研究通过查阅国内外标本馆馆藏标本，并在该州多个区域开展野外采集，以获取分类学处理及形态计量学分析（ANOVA）所需的数据。基于形态计量分析、物候学及形态学数据，本研究确认南里奥格兰德州分布有2种林仙科物种：狭叶林仙（Drimys angustifolia）与巴西林仙（Drimys brasiliensis）。本研究为这两个类群提供了分类检索表、形态描述、分类评述、物候学资料及形态插图。