Barbosa-Silva Rafael G, Coutinho Thales Silva, Vasconcelos Santelmo, da Silva Delmo Fonseca, Oliveira Guilherme, Zappi Daniela C
Instituto Tecnológico Vale de Desenvolvimento Sustentável, Belém, Pará, Brazil.
Coord. Botânica, Museu Paraense Emílio Goeldi, Belém, Pará, Brazil.
PeerJ. 2021 Nov 15;9:e12244. doi: 10.7717/peerj.12244. eCollection 2021.
is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for the first time in Brownlowioideae. and were recovered as sister species in the phylogenetic analysis, albeit with low to moderate support, and more species of this and closely related genera must be sampled and analyzed in order to obtain a clearer picture of the group's affinities and relationships. We provide an update of its conservation status from Vulnerable to Least Concern. We also highlight the need for investment in the digitization of biological collections, botanical capacity building at the local level and the importance of the availability of online literature to speed the study of Amazonian plant diversity.
是一个系统发育上神秘的分类单元，代表了一个物种的例子，其存在在亚马逊植物名录和巴西植物志项目中未被发现。在这里，我们通过添加来自秘鲁的新记录和巴西被忽视的记录来扩大其分布范围。为了研究其在布朗洛亚科中的系统发育位置，对质体的rbcL基因部分和基因间ITS2区域进行了测序。展示了使用扫描电子显微镜对叶、花、果实和种子结构进行宏观和微观形态学特征研究。在此指定了该名称的一个选型。毛状体的形态揭示了五种类型的毛状体，从腺状到分枝和不分枝，并且我们还首次在布朗洛亚科中报道了种子表面的气孔。在系统发育分析中，[物种名称1]和[物种名称2]被确定为姊妹物种，尽管支持度较低到中等，并且必须对该属和密切相关属的更多物种进行采样和分析，以便更清楚地了解该类群的亲缘关系和关系。我们将其保护状况从易危更新为无危。我们还强调了对生物标本数字化进行投资、地方层面的植物学能力建设以及在线文献可用性对于加速亚马逊植物多样性研究的重要性。
