Polytrichastrum sphaerothecium (Besch.)

Sofronova, E. V., Afonina, O. M., Bakka, S. V., Bezgodov, A. G., Czernyadjeva, I. V., Doroshina, G. Ya., Dudov, S. V., Dulin, M. V., Dzizyurova, V. D., Fedosov, V. E., Freydin, G. L., Garin, E. V., Ginzburg, E. G., Glazkova, E. A., Goldstein, M. S., Grishutkin, O. G., Ignatova, E. A., Kapitonov, V. I., Kapitonova, O. A., Khairetdinova, V. O., Konstantinova, N. A., Kotkova, V. M., Kurbatova, L. E., Kushnevskaya, E. V., Kuzmina, E. Yu., Lavrskaya, E. A., Mamontov, Yu. S., Moseev, D. S., Philippov, D. A., Pisarenko, O. Yu., Popova, N. N., Potemkin, A. D., Ryzhova, Е. М., Savchenko, A. N., Shestakova, A. A., Schuryakov, D. S., Selivanov, A. E., Shkurko, A. V., Shubina, T. P., Smirnova, E. V., Voronova, O. G., Zheleznova, G. V. & Zhuzenova, K. A., 2025, New bryophyte records. 24, Arctoa 34 (1), pp. 73-92 : 87

publication ID	https://doi.org/10.15298/arctoa.34.08
persistent identifier	https://treatment.plazi.org/id/039AAF5D-D216-663F-47A2-9DDA07B4FF96
treatment provided by	Felipe
scientific name	Polytrichastrum sphaerothecium (Besch.)
status

Treatment

Polytrichastrum sphaerothecium (Besch.) J.-P.

Frahm – Northern Kuril Islands, Onekotan Island, southern part of the island, Krenitsyn volcano (49.36667°N – 154.75497°E), old caldera Tao-Rusyr , on a vertical rock wall in crevices, S +, 21.VII.2024 Glazkova [Глазкова] { LE В-0043301}, det. Kurbatova. Polytrichastrum sphaerothecium is a protected species in the Sakhalin Province (Eremin & Taran, 2019) and previously known from the islands of Paramushir, Kunashir and Iturup ( Ivanova et al., 2014; Ignatov et al., 2017) GoogleMaps .

New liverwort records from Svalbard. 2. – Новые находки печеночников на Шпицбергене. 2. N.A. Konstantinova & A.N. Savchenko – Н.А. Константинова, А.Н. Савченко

New for the archipelago – Новые для архипелага

Tritomaria exsectiformis (Breidl.) Schiffn. ex Loeske subsp. arctica R.M. Schust. – Oscar II Land, Värmlandryggen View in CoL , west coast of Ymerbukta (78°14'19''N – 13°54'2''E), 37 m a.s.l., lower part of steep east facing rocky slope, Salix View in CoL polaris- moss tundra, on side of bryophyte covering hummock, 17.VII.2012 Konstantinova & Savchenko # K237-2-12, mixed with Sphenolobus minutus (Schreb. ex D. Crantz) Berggr. View in CoL , Cephaloziella varians (Gottsche) Steph. View in CoL , Lophozia silvicoloides N. Kitag. View in CoL , Cephalozia bicuspidata View in CoL (L.) Dumort. {KPABG K237-2- 12}, ibid. Konstantinova & Savchenko # K237-2-12, mixed with Scapania obcordata (Berggr.) S.W. Arnell View in CoL , Cephaloziella varians View in CoL {KPABG K237-4-12}. Tritomaria exsectiformis View in CoL was recorded in Svalbard only by Arnell & Mårtensson (1959) from “near NY-Ålesund.” A. Frisvoll ( Frisvoll & Elvebakk, 1996) suggested that this record refers to subsp. arctica R.M. Schust. However View in CoL , based on Damsholt's personal communication Süderstrüm et al. (2021) referred this record to subsp. exsectiformis . In collected by us specimens plants are very small, just 4–6 mm long and 0.5–0.7 mm wide, have concave mainly as wide as long leaves, ca. 0.6–0.75 × 0.65–0.75 mm, small midleaf cells, ca. (12)15–17(19) × 17–20(22) µm, numerous red to reddish brown angulary polygonal with admixture triangular gemmae, ca. (10)12–14 wide and 15–18(23) µm long and thus fits well subsp. arctica View in CoL .