taxonID	type	description	language	source
03AE87B7CB756D6519FFFDC8FD14F826.taxon	description	In addition to the main morphological distinction in the mostly smooth calyptra (mammillose only near the tip) in American plants vs. a scabrous calyptra in the Asian ones, comparisons of traits of these two species, accepted as subspecies, were published by Crum & Anderson (1981) and Iwatsuki & Suzuki (1982). The former authors noted that the costa is stronger in the Asian plants, and that the leaf margin is distinctly serrate. The latter publication summarized differences of North American vs. Asian taxa by smaller leaves (0.4 – 0.75 vs. 0.3 – 0.9 mm long), leaf margin subentire vs. serrate, shorter seta (1.2 vs. 1.3 – 4.0 mm), and smaller spores 7 – 10 vs. 10 – 15 µm. Iwatsuki & Suzuki (1982) did not confirm excurrent costa in Japanese plants, mentioning that by these traits the taxa are subidentical. However, the costa transverse section was found to possess many stereids, which is not the case in North American plants, nor in Asian ones observed by us. Selected North American collections studied: U. S. A. Missouri, Saint Genevieve County, Hickory Canyon Natural area, Benne Tract, cobble bed along small drainage leading into the south branch of Hickory Creek, 37 ° 52 ’ 18 ’’ N 090 ° 18 ’ 30 ’’ W, 807 ft. On top of a 6 inch piece of shaded, dry cobble, with Hypnum cupressiforme and Fissidens bryoides, 12 Oct 2019 Atwood 3768 (MO, dupl. MHA). Iwatsuki & Suzuki (1982) mentioned that the North American plants have scabrous calyptrae, which disagrees with the descriptions in Crum & Anderson (1981) and Pursell (2007), as well as lectotype and several syntype specimens of the species (FH, NY, BM 001094038!), and high-quality photomicrographs depicting Alabama, Mississippi and North Carolina specimens of F. closteri taken by Paul Davison at the University of North Alabama: https: // www. southernappalachianbryophytes. org / fissidensclosteri. html Fissidens kiusiuensis is indeed a variable species. The shorter leaves are roughly crenulate (Figs. 4 K, 5 E), whereas some longer ones are attenuate (Figs. 4 J, 5 F), and then in the distal half have the margin subentire. A similarly subentire upper leaf margin has been mentioned for this species recently by Kwon (2021) for Korean plants.	en	Fedosov, V. E., Wei, Y., Ho, BC., Atwood, J., Kuznetsova, O. I., Ignatov, M. S. (2024): The genus Fissidens in Russia, III: Fissidens kiusiuensis (Bryophyta), new species for the Russian Far East. Arctoa 33 (2): 107-116, DOI: 10.15298/arctoa.33.12, URL: https://doi.org/10.15298/arctoa.33.12
03AE87B7CB756D6A1A75FF63FD68FCBD.taxon	description	Iwatsuki (1958) designated the oldest among these as the lectotype, citing: “ U. S. A.; New Jersey – near Closter, 1865, Austin – holotype (NY) ”, although his annotation slip does not appear on any of the NY specimen packets. One specimen packet in NY from Austin’s herbarium (NY 00324944!) has the label “ Nagel’s Brook, Sept. 1865 ” and “ Anderson’s Brook, Aug. 12 th 1872 ” and is the best match for Iwatsuki’s type citation due to the inclusion of “ 1865 ” on the label. The packet contains several slips of paper with notes in Austin’s handwriting. On one of these is “ Sept. 9 1865, with Jung. pumila ”, and below that is “ Seligeria pusilla ” crossed out with “ F. closteri Aust. ” written beneath it and “ sent all to Sulliv! ”. Also in that same NY packet is a piece of paper with four clumps of rock glued to it with the note “ Nagel’s Ravine, Sept- 4 - 1871 ”. Since the 1865 material has long been absent from the NY packet, this specimen would have been the only material available to Iwatsuki from this packet in 1958. In FH is a specimen packet (FH 01138425!) bearing Sullivant’s stamp with the label “ Fissidens closteri n. sp. (with Jung. pumila With.) on earth along a rivulet, 1 mi. N. East of Closter Station, July & Sept. 1865, CFA. ” It contains a few plants of F. closteri and a note “ See good specimen, Rec’d Sept. 7 1871. ” This note references a much larger specimen (FH 01138426!) that was used by Sullivant for his illustration of F. closteri (1875, Pl. 29, PL. 9 A) according to notes on the packet and copy of the illustration. Since there is no specimen of F. closteri in NY from 1865, Art. 9.19 of the IUCN (Turland et al. 2018) does not apply. Either the date from Iwatsuki’s (1958) type citation must be corrected to 1871 since that is the date on the specimen, or the institution that he cited must be corrected to FH since that is where the 1865 material is deposited. Alternatively, a new lectotype could be designated from among the original material, although that would undesirably change the date of typification. Rath- er, we prefer to correct the date cited by Iwatsuki for the NY specimen to 1871. Doing so preservers the NY pack- et that Iwatsuki considered to be ‘ holotype’ material and the plants thought to be from 1865. The 1865 specimen in FH is small and incomplete compared to the 1871 specimen at NY that seemingly was used by Austin for his description of F. closteri. The FH duplicate of the 1871 specimen was furthermore used by Sullivant for his illustration of the species. New Jersey, [Bergen County], 1 mile north east of Closter Station, July and Sept. 1865, C. F. Austin (FH 01138425); one half mile n. e. of Closter, 4 Sept. 1871, C. F. Austin, (FH 01138426); on stones, bank of rivulets on the palisades near Closter, 8 Sept. 1871, C. F. Austin (FH 01138427); Anderson Brook, 12 Aug. 1872, C. F. Austin (NY 00324945); near Closter, Sept. 1872, C. F. Austin (NY 00304571); Closer, Aug. 12 th 1872, C. F. Austin (NY 00304578); on rocks along shady rivulet near Closter, C. F. Austin (NY 00304573); Austin 479, Musci Appalachiani, on rocks along rivulets, palisades, near Closter (Aug., Sept.) (NY 00304574, NY 00304575).	en	Fedosov, V. E., Wei, Y., Ho, BC., Atwood, J., Kuznetsova, O. I., Ignatov, M. S. (2024): The genus Fissidens in Russia, III: Fissidens kiusiuensis (Bryophyta), new species for the Russian Far East. Arctoa 33 (2): 107-116, DOI: 10.15298/arctoa.33.12, URL: https://doi.org/10.15298/arctoa.33.12
