Abstract
A taxonomic study of the family Rhachitheciaceae in Thailand is presented based on newly collected materials from field surveys and herbarium specimens. Two species are recognized, including Hypnodontopsis spathulata and Rhachithecium perpusillum. Hypnodontopsis spathulata, previously known only from the type locality, is reported here as a new genus and species record for Thailand. A key to species, taxonomic descriptions and illustrations are provided. In addition, the lectotype of Zygodon perpusillus (=Rhachithecium perpusillum) is also designated here.
References
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<p>Tang, Q.-M., Ho, B.-C. & Wei, Y.-M. (2019) An IUCN threatened moss species, <em>Hypnodontopsis apiculata </em>(Rhachitheciaceae, Bryophyta), new to China. <em>Herzogia</em> 32: 369–374. https://doi.org/10.13158/heia.32.2.2019.369</p>
<p>Xiong, Y. (2001) A moss family Rhachitheciaceae new to Guizhou, China. <em>Guihaia</em> 21: 103–105.</p>
<p>Zander, R.H. (1993) Genera of the Pottiaceae: mosses of harsh environments. <em>Bulletin of the Buffalo Society of Natural Sciences</em> 32: 1–378.</p>
<p>Brotherus, V.F. (1909) Orthotrichaceae. <em>In:</em> Engler, A. & Prantl, K. (Eds.)<em> Die Natürlichen Pflanzenfamilien</em> Vol. 1 (3). Verlag von W. Engelmann, Leipzig, pp. 1198–1203.</p>
<p>Fischer, E., Killmann, D. & Sérusiaux, E. (2006) A new species of <em>Jonesiobryum</em> (Bryopsida: Rhachitheciaceae) from Uganda. <em>Journal of Bryology</em> 28: 177–181. https://doi.org/10.1179/174328206X119989</p>
<p>Goffinet, B. (1997) The Rhachitheciaceae: revised circumscription and ordinal affinities. <em>The Bryologist</em> 100: 425–439. https://doi.org/10.2307/3244403</p>
<p>Gangulee, H.C. (1976) <em>Mosses of eastern India and adjacent regions. Vol. 2 Fasc. 5</em>. Calcutta, University of Calcutta, pp. 1135–1462.</p>
<p>Iwatsuki, Z. (1957) The genus <em>Hypnodon</em> and its allies. <em>The Bryologist</em> 60: 299–310. https://doi.org/10.1639/0007-2745(1957)60[299:TGHAIA]2.0.CO;2</p>
<p>Le Jolis, A.F. (1895) Nomenclature Bryologique. <em>Mémoires de la Société des Sciences Naturelles et Mathématiques de Cherbourg</em> 29: 229–328.</p>
<p>O’Shea, B. (2006) Checklist of the mosses of sub-Saharan Africa (version 5, 12/06). <em>Tropical Bryology Research Reports</em> 6: 1–252.</p>
<p>Mitten, W. (1873) New species of Musci collected in Ceylon by Dr. Thwaites. <em>Journal of the Linnean Society, Botany</em> 13: 293–328. https://doi.org/10.1111/j.1095-8339.1873.tb00096.x</p>
<p>Printarakul, N., Tan, B.C., Santanachote, K. & Wongkuna, K. (2012) Nine new records of mosses from Doi Suthep-Pui National Park and a new variety of <em>Fissidens</em> from Thailand. <em>Cryptogamie, Bryologie</em> 33: 23–32. https://doi.org/10.7872/cryb.v33.iss1.2012.023</p>
<p>Robinson, H. (1964) New taxa and new records of bryophytes from Mexico and Central America. <em>The Bryologist</em> 67: 446–458. https://doi.org/10.2307/3240770</p>
<p>Tang, Q.-M., Ho, B.-C. & Wei, Y.-M. (2019) An IUCN threatened moss species, <em>Hypnodontopsis apiculata </em>(Rhachitheciaceae, Bryophyta), new to China. <em>Herzogia</em> 32: 369–374. https://doi.org/10.13158/heia.32.2.2019.369</p>
<p>Xiong, Y. (2001) A moss family Rhachitheciaceae new to Guizhou, China. <em>Guihaia</em> 21: 103–105.</p>
<p>Zander, R.H. (1993) Genera of the Pottiaceae: mosses of harsh environments. <em>Bulletin of the Buffalo Society of Natural Sciences</em> 32: 1–378.</p>