Augsten Mariana, Meyer Pablo Burkowski, Freitas Loreta B, Batista João A N, Stehmann João Renato
Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, CEP 31270-901, MG, Brazil Universidade Federal de Minas Gerais - UFMG Belo Horizonte Brazil.
Departamento de Genética, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre, RS, Brazil Universidade Federal do Rio Grande do Sul Porto Alegre Brazil.
PhytoKeys. 2022 Feb 25;190:113-129. doi: 10.3897/phytokeys.190.76111. eCollection 2022.
Augsten & Stehmann (Solanaceae), , a small 'tobacco' known only from one locality at Serra do Gandarela, in the state of Minas Gerais, Brazil, is described and illustrated. It is morphologically characterized by its rosulate basal leaves, red corolla with a short tube not inflated at the apex, and the peculiar habitat, a shaded site under a rocky outcrop ledge along a forested stream. Phylogenetic analyses based on a combined dataset of nuclear (ITS) and plastid (, , and ) DNA sequences revealed that the species belongs to the Nicotianasect.Alatae and is sister to the clade with the remaining species in the section. A key for the identification of Brazilian species of the section is given. The unusual habitat, the small population size, and the intense pressure of mining activities in the surroundings made the species assessed as Critically Endangered (CR), needing conservation efforts to avoid its extinction.
奥格斯滕和施特曼（茄科）描述并说明了一种仅在巴西米纳斯吉拉斯州甘达雷拉山脉一个地方被发现的小型“烟草”。它的形态特征是莲座状基生叶、红色花冠，花冠筒短，顶端不膨大，以及独特的生境，即在一条森林溪流旁岩石露头壁架下的阴凉处。基于核（ITS）和质体（、和）DNA序列的组合数据集进行的系统发育分析表明，该物种属于烟草属阿拉泰组，并且是该组中其余物种所在分支的姐妹种。给出了该组巴西物种的鉴定检索表。这种不寻常的生境、小种群规模以及周边采矿活动的巨大压力，使得该物种被评估为极度濒危（CR），需要采取保护措施以避免其灭绝。
