Fedosov V.E.1,2, Wei Y.3, Ho B-C.4, Atwood J.5, Kuznetsova O.I.6, Ignatov M.S.1,6 2024. The genus Fissidens in Russia, III: Fissidens kiusiuensis (Bryophyta), new species for the Russian Far East // Arctoa. Vol. 33: 107-116 [in English].
1 – Lomonosov Moscow State University, Faculty of Biology, Plant Ecology and Geography Dept., Leninskie Gory Str. 1–12, Moscow 119234 Russia; e-mail: misha_ignatov@list.ru. ORCID: (MI) 0000-0001-6096-6315 (VF) 0000-0002-5331-6346
2 – Botanical Garden-Institute, Far Eastern Branch of the Russian Academy of Sciences, Makovskogo Street, 142, Vladivostok, 690024, Russia
3 – Guangxi Institute of Botany,Chinese Academy of Science, Guangxi Zhuang Autonomous Region, Guilin 541006 China; ORCID: 0000-0002-1845-716X;
4 – Herbarium, Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, 259569, Republic of Singapore; ORCID: 0000-0003-0530-775X
5 – Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110 U.S.A;ORCID: 0000-0002-8646-6711.
6 – Tsitsin Main Botanical Garden, Russian Academy of Sciences, Botanicheskaya Str., 4, Moscow 127276 Russia; ORCID: (OK)
0000-0002-5513-1329
KEYWORDS: mosses, Russia, China, new records, Fissidens closteri, taхonomy, lectotype
ABSTRACT. Among recent collections of mosses from the Ussurijsky Nature Reserve (Primorsky Territory, Russia) we found a very small Fissidens species, which did not match any species description in its combination of morphological traits. The species resembles the North American F. closteri subsp. closteri in the mostly subentire leaf margins and having only a few stereids in the costa, but in its scabrous calyptrae it also matches the East Asian F. closteri subsp. kiusiuensis. Molecular phylogenetic study found that the nuclear ITS of these plants is subidentical with Chinese plants from Guangxi Province, and strongly different from the North American plants. Morphological variation in Asian populations is found to be broader than previously described. Therefore we suggest resurrection of Fissidens kiusiuensis as a separate species. The finding in Guangxi Province is the third record of this species in China. A correction is made regarding the citation of lectotype specimen of F. closteri in the NY herbarium.
doi: 10.15298/arctoa.33.12