Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China
Four new species of the lichen genus Diorygma 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 compou...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2025-08-01
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| Series: | MycoKeys |
| Online Access: | https://mycokeys.pensoft.net/article/157714/download/pdf/ |
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| author | Wei Wu Shu-Hao Jiang Lin-Shan Chai He-Yun Bo Ruvishika S. Jayawardena Shao-Bin Fu Qing-Feng Meng |
| author_facet | Wei Wu Shu-Hao Jiang Lin-Shan Chai He-Yun Bo Ruvishika S. Jayawardena Shao-Bin Fu Qing-Feng Meng |
| author_sort | Wei Wu |
| collection | DOAJ |
| description | Four new species of the lichen genus Diorygma 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. Diorygma guizhouense is characterized by small apothecia, a narrow to slightly open disc covered with white pruina, and the presence of stictic, salazinic, and norstictic acids. Diorygma leigongshanense 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 D. guizhouense. Diorygma locitonitrus is distinguished by the presence of salazinic acid and hyaline, richly muriform ascospores, notably with distinctly smaller peripheral cells compared to the central cells. Diorygma weii 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. |
| format | Article |
| id | doaj-art-fdeda3dcb57a4de9b7f41bbd76d44d4f |
| institution | Kabale University |
| issn | 1314-4049 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | MycoKeys |
| spelling | doaj-art-fdeda3dcb57a4de9b7f41bbd76d44d4f2025-08-24T07:33:41ZengPensoft PublishersMycoKeys1314-40492025-08-0112111114210.3897/mycokeys.121.157714157714Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, ChinaWei Wu0Shu-Hao Jiang1Lin-Shan Chai2He-Yun Bo3Ruvishika S. Jayawardena4Shao-Bin Fu5Qing-Feng Meng6Zunyi Medical UniversityLiaocheng UniversityZunyi Medical UniversityZunyi Medical UniversityMae Fah Luang UniversityZunyi Medical UniversityZunyi Medical UniversityFour new species of the lichen genus Diorygma 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. Diorygma guizhouense is characterized by small apothecia, a narrow to slightly open disc covered with white pruina, and the presence of stictic, salazinic, and norstictic acids. Diorygma leigongshanense 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 D. guizhouense. Diorygma locitonitrus is distinguished by the presence of salazinic acid and hyaline, richly muriform ascospores, notably with distinctly smaller peripheral cells compared to the central cells. Diorygma weii 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.https://mycokeys.pensoft.net/article/157714/download/pdf/ |
| spellingShingle | Wei Wu Shu-Hao Jiang Lin-Shan Chai He-Yun Bo Ruvishika S. Jayawardena Shao-Bin Fu Qing-Feng Meng Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China MycoKeys |
| title | Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China |
| title_full | Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China |
| title_fullStr | Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China |
| title_full_unstemmed | Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China |
| title_short | Four new species of the lichen genus Diorygma (Graphidaceae, Ostropales) from Guizhou, China |
| title_sort | four new species of the lichen genus diorygma graphidaceae ostropales from guizhou china |
| url | https://mycokeys.pensoft.net/article/157714/download/pdf/ |
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