Wu Wei, Jiang Shu-Hao, Chai Lin-Shan, Bo He-Yun, Jayawardena Ruvishika S, Fu Shao-Bin, Meng Qing-Feng
School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou Province 563000, China.
College of Agriculture and Biology, Liaocheng University, Liaocheng, Shandong Province 252059, China.
MycoKeys. 2025 Aug 22;121:111-142. doi: 10.3897/mycokeys.121.157714. eCollection 2025.
Four new species of the lichen genus from China are described based on morphological, chemical, and phylogenetic evidence. Phylogenetic analyses were conducted using both RAxML and Bayesian posterior probability inference, based on combined LSU and mtSSU sequences. The characteristic compounds were analyzed by colorimetric reactions and thin-layer chromatography. is characterized by small apothecia, a narrow to slightly open disc covered with white pruina, and the presence of stictic, salazinic, and norstictic acids. is characterized by small, oval apothecia, a disc surrounded by entire, raised, and widely open thalline margins covered with thin, pale yellowish pruina, and the same chemical substances as . is distinguished by the presence of salazinic acid and hyaline, richly muriform ascospores, notably with distinctly smaller peripheral cells compared to the central cells. is characterized by stellately branched apothecia with a closed to slit-like disc, a milky white thallus tinged with green, and the presence of only norstictic acid. Detailed morphological descriptions and illustrations of the new species are provided, along with a comprehensive species checklist highlighting the diagnostic characteristics of the known species in this genus.
基于形态学、化学和系统发育学证据，描述了来自中国的地衣属的四个新物种。基于联合的 LSU 和 mtSSU 序列，使用 RAxML 和贝叶斯后验概率推断进行了系统发育分析。通过比色反应和薄层色谱法分析了特征化合物。其特征为小型子囊盘、覆盖白色粉霜的狭窄至略开放的盘面，以及存在扁枝衣酸、沙拉地衣酸和降扁枝衣酸。其特征为小型椭圆形子囊盘、被完整、凸起且广泛开放的叶状体边缘包围的盘面，边缘覆盖着薄的淡黄色粉霜，以及与相同的化学物质。其区别在于存在沙拉地衣酸和透明、具丰富多隔的子囊孢子，特别是与中央细胞相比，周边细胞明显更小。其特征为星状分枝的子囊盘，具封闭至狭缝状的盘面、带绿色调的乳白色叶状体，以及仅存在降扁枝衣酸。提供了新物种的详细形态描述和插图，以及一份全面的物种清单，突出了该属地衣已知物种的诊断特征。
