Data from: Tovomita (Clusiaceae) from the Brazilian Atlantic Forest: taxonomy and utility of leaf venation characters at the species level

Tovomita comprises approximately 50 species that are mainly distributed in moist forests of the Neotropics. In Brazil there are 34 species, which occur in the Amazon region and along the Atlantic coast. We here describe and illustrate the Tovomita species from the Brazilian Atlantic Forest, as well as characterize the leaf morphology of these taxa. Leaves were cleared and their venation was analyzed to look for diagnostic characters related to architecture and the relationship between the secondary and intersecondary veins. Eleven species of Tovomita were recorded, which have distributions ranging from the state of Rio Grande do Norte to the state of Rio de Janeiro. An identification key, based on the analysis, and distribution maps are provided. Tovomita salimenae, a new and vulnerable species endemic to the state of Minas Gerais, is described and two synonyms and nine lectotypifications are proposed. This work also revealed that seven species have larger distributions than previously thought and two species are critically endangered (T. iaspidis and T. megantha). The most relevant characters used to identify the studied species were exudate color, venation pattern, and bud shape.

托瓦木属（Tovomita）共计约50个物种，主要分布于新热带区的湿润森林中。巴西境内分布有34个物种，见于亚马逊地区及大西洋沿岸地带。本研究对巴西大西洋沿岸的托瓦木属物种进行了描述与图解，并对这些分类群的叶片形态进行了表征分析。通过叶片透明化处理，对其叶脉结构进行分析，以寻找与脉序架构、二级脉与间生脉之间关联相关的分类鉴别特征。本次研究共记录到11个托瓦木属物种，其分布范围北至北里奥格兰德州，南达里约热内卢州。本研究附有所基于分析结果编制的分种检索表，以及物种分布地图。本次描述了一种特有于米纳斯吉拉斯州的新种托瓦木Tovomita salimenae，其保护等级为易危（Vulnerable）；同时提出了2个新异名，并完成了9份模式标本的后选模式指定（lectotypification）。本研究同时发现，有7个物种的分布范围较此前认知更广，另有2个物种（T. iaspidis与T. megantha）被评估为极危（Critically Endangered）。用于鉴定本次研究物种的核心鉴别特征包括分泌物颜色、脉序样式及芽体形态。