identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03FADB22FFCA9D1330FCFB17FAD8FA4A.text	03FADB22FFCA9D1330FCFB17FAD8FA4A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon acutus	<div><p>Didimodon acutus</p><p>The presence of D. acutus in Russia was already confirmed by Jiménez (2006), who cited one specimen of this species from North Ossetia collected by Brotherus in 1877. However, its distribution in the country remained insufficiently known, since small-sized plants with unistratose, narrowly recurved leaf margins and smooth laminal cells collected in Russia possessed a greater variability than it was provided in the description of D. acutus; furthermore, some of them grew in habitats which did not suite the latter species. Thus, several specimens from different regions of Russia which possessed morphological characters of D. acutus were sampled. Four sequences were obtained (isolates OK3311, OK3320, OK3329, and OK4106); they were resolved within the clade 4 and formed a fully supported clade with the grade of three specimens of another unknown species, contrastingly different in morphology, at its base, with low support (PP 0.83, BS 65) for their mutual clade. This clade appeared to be sister to the clade of three species, D. tibeticus, D. vulcanius and D. icmadophilus . A the same time, GenBank accessions of D. acutus (specimens from Greece, Italy and Spain) were found within the clade 3, in a fully supported clade sister to the clade of D. glaucus + D. japonicus + D. jimenezii + D. tomaculosus . A closer morphological comparison of specimens from Russia with the description of D. acutus and specimens of this species from herbaria convinced us that they likely represent another species (see Fig. 2 showing leaves, leaf transverse sections and upper laminal cells of D. acutus from Spain and specimens in question from Russia). We also failed to find an appropriate name for our specimens among similar species recently described from China. Considering the differences between specimens from Russia and D. acutus in ecological preferences, were decided to describe them as a new species, D. borealis (see below in Taxonomy section). However, an expanded search for D. acutus in herbarium collections from Russia is needed, taking into account characters of the newly described species, as well as of D. mongolicus (see below); molecular barcoding can be also helpful to understand better their morphological distinctions.</p></div>	https://treatment.plazi.org/id/03FADB22FFCA9D1330FCFB17FAD8FA4A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFCA9D103376FA77FD33FE03.text	03FADB22FFCA9D103376FA77FD33FE03.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon icmadophilus	<div><p>Didymodon icmadophilus</p><p>We selected a number of samples from Asian Russia that were identified as D. icmadophilus according to keys and descriptions in Russian handbooks. None of these Asian specimens were resolved together with GenBank accessions of this species. Instead, some appeared in D. validus -clade, while others formed a clade next to one specimen of D. daqingii (the species which possesses leaves with very longly excurrent costae, but have bistratose leaf margins) and in a clade sister to D. hengduanensis . One specimen from Irkutsk Province with leaves similar in shape to D. icmadophilus and weakly papillose laminal cells was resolwed in a clade with Chinese specimens of D. hengduanensis . However, one sample from the Caucasus collected in a moist habitat at the riv- er bank and matching well D. icmadophilus in morphology was found within a fully supported D. icmadophilus - clade, thus confirming its presence in the Russian Caucasus. Thus, herbarium collections from Russia named as D. icmadophilus should be revisited to clarify its real distribution, taking into account its accurate description, e.g., by Jiménez (2006), and its ecological preferences.</p></div>	https://treatment.plazi.org/id/03FADB22FFCA9D103376FA77FD33FE03	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC99D10335CFDCFFABBFC6C.text	03FADB22FFC99D10335CFDCFFABBFC6C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon cordatus	<div><p>Didymodon cordatus</p><p>This species was already recorded in Russia from the Caucasus and Russian Far East (Ignatov et al., 2006). In the present study, four specimens from Russia (Dagestan Republic in the Caucasus, Altai Republic, and Primorsky Territory) were included; they were resolved within clade 5, in a maximally supported (PP 1, BS 100) subclade with four GenBank accessions of D. cordatus (specimens from Spain, North Ossetia/Alania, and China). Thus, species identity of Russian specimens and distribution of D. cordatus in the Caucasus, southern Siberia and south of the Russian Far East are confirmed.</p></div>	https://treatment.plazi.org/id/03FADB22FFC99D10335CFDCFFABBFC6C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC99D10335CFC5AFAE2F879.text	03FADB22FFC99D10335CFC5AFAE2F879.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon mongolicus	<div><p>Didymodon mongolicus</p><p>This species was described in 2016 from Northern China and Mongolia (Zhao et al., 2016). It was characterized as having small-sized plants, ovate leaves 0.5–1.0 mm long, with acute apices, weakly recurved margins, costa ending few cells below leaf apex, and smooth laminal cells. A singe ITS accession of D. mongolicus is represented in GenBank; it belongs to the holotype specimen. In our analysis it was resolved within clade 5, in a moderately supported (PP 0.95, BS 99) clade with 8 specimens from Russia (southern Siberia, Yakutia and Dagestan in the Caucasus). These specimens are partially in agreement with the description of D. mongolicus morphologically, including plant size, leaf shape, and unistratose, narrowly recurved leaf margins; their leaves are only slightly larger than it was provided in the original description of this species. Four specimens (from Tyva and Dagestan) also have smooth laminal cells, whereas the rest four specimens (from Yakutia, Altai and Dagestan) have laminal cells with clear, round papillae on dorsal surface (Fig. 4). In the molecular phylogenetic tree, type specimen of D. mongolicus forms a small, moderately supported subclade with two specimens, one of them, from Tyva being most similar to it (leaves ca. 0.8 mm long, smooth laminal cells), while another one, from Yakutia, having leaves ca. 1.1 mm long and laminal cells papillose dorsally. Jiménez (2006) states that leaf papillosity is an important morphological character for species distinguishing in Didymodon, but in some species leaf cells are always smooth or always papillose, but there are several species in Europe, North Africa and West Asia which may have smooth or papillose laminal cells: D.</p></div>	https://treatment.plazi.org/id/03FADB22FFC99D10335CFC5AFAE2F879	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC99D1030A2FE4FFB62FD83.text	03FADB22FFC99D1030A2FE4FFB62FD83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon validus	<div><p>Didymodon validus</p><p>This species was described from Austria (Limpricht, 1888). In Europe it is considered as vulnerable; its presence is confirmed only in France, Italy, Slovakia (Hodgetts &amp; Lokhart, 2020) and Poland (Jiménez et al., 2022). It remained neglected in Russia, probably because Savicz-Lyubitskaya &amp; Smirnova (1970) treated it as a variety of D. rigidulus, and it was mainly ignored by those who identified collected specimens. This name became in use by Russian bryologists only recently, and many Didymodon specimens from the Caucasus and Asian Russia, having leaves with unistratose, weakly recurved margins, sharply acuminate apices, and smooth laminal cells, were identified as D. validus . However, in many cases this name was supplemented with “s.l.” or “cf.” remarks due to a considerable variability of these specimens in leaf size, leaf base differentiation, length of acumina, and leaf stature in dry and wet condition.</p><p>In the analysis by Jiménez et al. (2022), one specimen from China, Xinjiang appeared in a clade with European specimens of D. validus; it hinted on the possible wider distribution of this species in Asia, but its morphological circumscription needed to be clarified. For the present analysis, 19 specimens identified as D. cf. validus or D. icmadophilus were sampled; they were resolved in a moderately supported (PP 1, BS 79) clade together with all available GenBank accessions of D. validus . This clade appeared in a sister position to D. wisselii &amp; D. schensianus clade. A selection of specimens in a D. validus - clade represents plants from a wide geographical range: Central European Russia, Caucasus, Urals, Altai Mts in southern Siberia, different regions of Yakutia, Amur Province, Khabarovsk and Primorsky Territory in the south of Russian Far East. In their main morphological characters, they do not contradict the description and illustrations of D. validus provided by Jiménez (2000).</p><p>Leaves and transverse sections of the sequenced specimens of D. validus are shown in Fig. 3. Most of these specimens have leaves with scarcely differentiated bases, without shoulders, gradually tapered into narrow acumina, having weakly recurved margins and shortly excurrent costae. Specimens from European Russia, including Urals and Caucasus, and one sample from central Yakutia have shorter (1.4–1.9 mm long) leaves than most oth- er specimens from Asian Russia (2.2–2.9 mm long). However, all these measurements are within the range of variability of this species given by Jiménez (2000): (1.2–) 1.6–2.7(–3.2) mm. Thus, the presence and wide distribution of D. validus in Russia is confirmed.</p><p>Noteworthy, according to Jiménez (2006), sexual condition and sporophytes are unknown in D. validus . Most of our sequenced specimens were also sterile, and only in two specimens, OK3464 from Yakutia (Ust-Nera) and OK4063 from Altai (Chemal) sporophytes were found. However, we failed to find any male inflorescences in these or other specimens. Sporophytic characters of D. validus are described in the Taxonomy section. Jiménez (2000) also mentioned that round multicellular gemmae are often present in leaf axils in D. validus; in our sequenced specimens gemmae were very rare.</p></div>	https://treatment.plazi.org/id/03FADB22FFC99D1030A2FE4FFB62FD83	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC79D1E30A2FA03FC1AF977.text	03FADB22FFC79D1E30A2FA03FC1AF977.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon daqingii	<div><p>Didymodon daqingii and D. manchanensis</p><p>Didymodon daqingii was described from Inner Mongolia, China (Kou et al., 2019). It is a peculiar plant with a combination of morphological characters which is infrequent in Didymodon: bistratose upper leaf margins; costa in transverse section with 2–3 layers of guide cells and no ventral stereids; costa excurrent into a long, fragile subula; leaf bases abruptly broadened, round; and laminal cells papillose. One GenBank accession of this species obtained from the type specimen was resolved in our tree within clade 4, in the grade at the base of the clade which includes D. icmadophilus, D. hengduanensis, D. tibeticus, and D. vulcanicola . Before it in the same grade, five accessions obtained from three specimens from Asian Russia (two from Yakutia and one from Tyva) formed a maximally supported clade. These specimens possessed almost the same combination of morphological characters as D. daqingii, except they had smooth laminal cells. Another species with similar character combination is D. manchanesis; it was also described from Inner Mongolia, China (Feng et al., 2022). It differs from D. daqingii in smooth laminal cells, ovate vs. round leaf bases, and red vs. yellow-green KOH reaction. ITS obtained from the type specimen of D. manchanensis is also represented in GenBank. In our tree, it is resolved in an “orphaned” position within clade 5, i.e., far from D. daqingii and a clade of similar specimens from Russia. Our specimens, despite having smooth laminal cells, in other respects (shape of leaf base, yellow-green KOH reaction) are closer to D. daqingii; their ITS sequences differ from the sequence of Chinese D. daqingii in several substitutions, but the difference from D. manchanensis is greater. At the moment, we prefer to call our plants D. daqingii, but if other similar specimens will be found in Russia, it would be interesting to test their identity with molecular barcoding.</p></div>	https://treatment.plazi.org/id/03FADB22FFC79D1E30A2FA03FC1AF977	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC79D1F335CF963FF66FE23.text	03FADB22FFC79D1F335CF963FF66FE23.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon tibeticus	<div><p>Didymodon tibeticus</p><p>This is another species recently described from China (Kou et al., 2018); it was found in several counties of Tibet Province. Three GenBank accessions of D. tibeticus, including obtained from paratype specimen, were available in GenBank. They formed a maximally supported clade sister to the clade of D. icmadophilus + D. vulcanicus within clade 4, and one specimen from Zabaikalsky Territory was resolved in this clade. It also fully agreed with D. tibeticus in morphology and was referred to this species. The description, illustrations, ecological data and distribution in Russia are discussed separately by Afonina &amp; Ignatova (2024) in the present volume.</p></div>	https://treatment.plazi.org/id/03FADB22FFC79D1F335CF963FF66FE23	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC69D1F30FCFE2FFAA0FAD7.text	03FADB22FFC69D1F30FCFE2FFAA0FAD7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon hengduanensis	<div><p>Didymodon hengduanensis</p><p>This species was described in 2016 from Hengduan Mts (Yunnan, China) and was also found in Sichuan Province. Its distinctive characters include ovate-lanceolate leaves with comparatively wide bases, unistratose, recurved to revolute margins, percurrent costae, sparsely papillose laminal cells, and basal marginal cells in several rows oblate, with thickened transverse walls. Its five GenBank accessions formed a fully supported clade within clade 4, in which two specimens from Russia were resolved: one from Primorsky Territory, another from Irkutsk Province. These two specimens also fitted D. hengduanensis morphologically. They are described, illustrated and discussed in the Taxonomy section .</p><p>A potentially undescribed species revealed in the present analysis (see also discussion on D. acutus above)</p><p>(1) Two specimens from Primorsky Territory (isolates OK 3317 and OK4019) formed a maximally supported clade sister to one GenBank accession called D. icmadophilus from China, Heilongjiang (PP 0.94; BS 97). Their mutual clade was resolved as sister to D. wisselii clade without support, within clade 5. In some characters (excurrent costae, papillose leaf cells) plants from Primorsky Territory actually resembled D. icmadophilus, but they had leaves different in shape, widely spreading but not erect-patent when wet, and papillae on laminal cells small, sparse, present on both leaf surfaces. Their relationship to European D. icmadophilus was also not confirmed by molecular data, as the latter species was resolved in the clade 4 in our study, far from the specimens in question. These plants are described in the Taxonomy section under the name D. cherdantsevae .</p><p>(2) Four specimens (isolates OK3477, OK3484, OK4053, and OK4101) from distant localities (Primorsky Territory, Yakutia, Dagestan) formed a maximally supported clade within clade 5, without obvious relationship with other species. They were uniform morphologically and resembled D. cordatus in having leaves with highly recurved margins, similar costa structure, papillose laminal cells and presence of multicellular axillary gemmae; however, they had different leaf shape, with scarcely differentiated bases, and their leaf margins were only slightly recurved but not revolute. These differences together with an evidence from molecular markers suggested that this is an undescribed species; it is described in the Taxonomy section as D. calciphilus .</p><p>(3) Nine specimens from southern Siberia (Irkutsk Province, Buryatia, Zabaikialsky Territory, Khakassia, and Altai Republic, isolates OK3321, OK3455, OK3457, OK3474, OK3475, OK3489, OK3496, OK3519, and OK4103 formed a maximally supported clade sister to D. mongolicus -clade within clade 5. They are characterized by having deltoid leaves with margins revolute almost to apices, papillose laminal cells, costae in transverse section with 2–3 layers of guide cells and no ventral stereids, and multicellular axillary gemmae occasionally present. This combination of characters partially resembled D. cordatus, D. tectorum and D. desertorum, but did not exactly fit any of these species. This fact, together with data from ITS, convinced us that this is a new species. It is described in the Taxonomy section as D. baicalensis .</p><p>(4) Three specimens (isolates 3449, 3454 and 4108) from the Caucasus, Tyva and Yakutia were resolved within clade 4 in a highly supported (PP 1, BS 0.99) clade sister to D. hengduanensis, with low support for their mutual clade (PP 0.72, BS 57). These specimens are characterized by leaves tightly appressed when dry, straight, ovate-triangular, with long excurrent costae, fragile apices and unistratose laminae. This character combination is unique in Didymodon s. str.; thus these plants are described as a new species, D. abramovae in the Taxonomy section. Another three specimens with the same morphological characters (isolates OK3451, OK3452 and OK4112) from Perm Territory, Ingushetia and Tyva were found in a grade at the base of fully supported D. borealis -clade. We tentatively refer them to D. cf. abramovae .</p><p>(5) One morphologically very peculiar specimen from Altai Republic (isolate OK3893) was resolved in an orphaned position. Despite only one such specimen was found, it is so distinct in morphology, that we decided to describe it in order to attract attention to it and make search of similar plants easier. It is described in the Taxonomy section as D. truncatus .</p><p>Species that could be expected in the territory of</p><p>Russia but not found in the present analysis</p></div>	https://treatment.plazi.org/id/03FADB22FFC69D1F30FCFE2FFAA0FAD7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC69D1F3376FA1AFB72F8F9.text	03FADB22FFC69D1F3376FA1AFB72F8F9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon schensianus	<div><p>Didymodon schensianus</p><p>Didymodon (Barbula) schensianus was described from China, Shaanxi Province in 1896 and considered as its endemic, known from few localities. Furthermore, Li et al. (2001) included it into synonymy of D. vinealis . However, Jiménez et al. (2024) have shown that it is a species of its own, which has a wider distribution, being common in Japan (Honshu, Kyushu), found in Taiwan and Philippines. These authors compare D. schensianus with the most similar D. hengduanensis which was already found in Russia. However, our search in herbarium collections from the Russian Far East did not return any results, and no sequences similar to the GenBank accessions of D. schensianus were obtained.</p></div>	https://treatment.plazi.org/id/03FADB22FFC69D1F3376FA1AFB72F8F9	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
03FADB22FFC69D1C3376F8E5FC58FA77.text	03FADB22FFC69D1C3376F8E5FC58FA77.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Didymodon tectorum	<div><p>Didymodon tectorum</p><p>This species was never recorded for Russia. It was described from Shaanxi Province of China; according to Li et al. (2001), it is widely distributed in China and considered to be its endemic. However, Saito (1975) reported it from Japan and Zander &amp; Ochyra (2001) discovered it in the USA. It is very similar to D. cordatus morphologically: both species possess strongly revolute leaf margins almost to the apex, papillose laminal cells and multicellular axillary gemmae. In the study of Jiménez et al. (2022), D. tectorum was found to be sister to D. imbricatus, and their mutual clade was sister to D. cordatus . In our analysis, one sequence (isolate OK3482) obtained from specimen from Altai Mts had much in common with D. tectorum (this species was found to be most similar by BLAST search); however, it was resolved not with D. tectorum but in a sister position to the mutual clade of D. tectorum + D. desertorum + D. imbricatus . Furthermore, morphologically it did not fit any of this species but was identical to the new species described here as D. baicalensis; it needs additional study.</p></div>	https://treatment.plazi.org/id/03FADB22FFC69D1C3376F8E5FC58FA77	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ignatova, E. A.;Fedosov, V. E.;Kuznetsova, O. I.;Fedorova, A. V.;Ignatov, M. S.	Ignatova, E. A., Fedosov, V. E., Kuznetsova, O. I., Fedorova, A. V., Ignatov, M. S. (2024): On the genus Didymodon s. str. (Pottiaceae, Bryophyta) in Russia. Arctoa 33 (2): 129-155, DOI: 10.15298/arctoa.33.14, URL: https://doi.org/10.15298/arctoa.33.14
