Novelties in Phyllanthus sect. Phyllanthus subsect. Phyllanthus (Phyllanthaceae): Two new species, two new synonyms, and a lectotype

 An ongoing taxonomic work on Phyllanthus subsect. Phyllanthus, resulting from the analysis of protologues and the study of approximately 2000 collections, including all types, historical collections, and observations in the field, led us to describe two new species (P. lobatus and P. platystigma), and to propose the synonymization of P. mimicus and P. bolivianus under P. niruri, as well as establish a lectotype for P. bolivianus. For both new species, we provide, descriptions, illustrations, preliminary conservation status, flowering and fruiting periods, environmental preferences and images in their habitat.  In addition, they are compared with morphologically similar congeners and their systematic position is discussed.

针对叶下珠属（Phyllanthus）叶下珠亚组的分类学研究正在持续推进中，本研究通过分析原始发表文献（protologues）并检视约2000份标本馆藏，涵盖所有模式标本、历史馆藏标本及野外实地观测数据，最终确立了两个新种（P. lobatus与P. platystigma），提出将P. mimicus和P. bolivianus归并为P. niruri的异名，并为P. bolivianus指定后选模式标本（lectotype）。针对这两个新种，本文提供了其形态描述、形态插图、初步保护等级、开花与结果物候期、生境偏好以及原生境影像资料。此外，本研究还将这两个新种与形态相似的同属近缘物种进行对比，并讨论了其系统学位置。