Plagiothecium denticulatum var. obtusifolium (Turner) Moore

Plagiothecium denticulatum var. obtusifolium (Turner) Moore View in CoL , Proceedings of the Royal Irish Academy 1: 424. 1873.

≡ Hypnum denticulatum var. obtusifolium Turner , Muscologiae Hibernicae Spicilegium 146, T. 12, f. 2. 1804 ≡ Hypnum obtusifolium (Turner) Brid. View in CoL , Muscologiae Recentiorum Supplementum 2: 93. 1812 ≡ Stereodon denticulatus var. obtusifolius (Turner) Brid. , Bryologia Universa 2: 824. 1827 ≡ Plagiothecium obtusifolium (Turner) J. J. Amann View in CoL , Mémoire de la Société Vaudoise des Sciences Naturelles 3: 61. 1928. Holotype: figure 2, tabela 12 “ T. 12, f. 2 ”, Turner 1804: 237. Epitype (designated by Wolski et al. 2022 d): [ Ireland,] in summo montis Bulbein jugo, ab oculatissimo D. Brown lectam, benigne communicavit D. Templeton, BM 000890810!

= Plagiothecium sandbergii Renauld & Cardot View in CoL , Contributions from the United States National Herbarium 3: 274. 1895. Lectotype (designated by Wolski et al. 2022 d): U. S. A., Idaho, Kootenai County, Hope, J. H. Sandberg, D. T. Macdougal, A. A. Heller 1174, August 1892, PC 0132604! Isolectotypes: NY 507114! (available online), US 70396! (available online), FH 220148. Additional original material from locus classicus (not signed “ No. 1174 ”), NY 507115! (available online); additional Sandberg material, potentially from locus classicus PC 0132605! and Sandberg material FH 220147.

= Plagiothecium denticulatum var. auritum Kern View in CoL , Jahresbericht der Schlesischen Gesellschaft für Vaterländische Cultur 91 (Abt. 2 b): 97. 1914. Lectotype (designated by Wolski et al. 2022 d): [ Italy,] South Tirol , Ortler, Martelltal, in Felshöhlungen oberhalb der Cevedalehütte, 2350 m, 30 July 1913, F. Kern s. n., herb. I. Thériot, PC 0132639 !

Description.

Plants small, light green, with metallic luster; stem 0.9–2.5 cm; leaves julaceous, very concave, ovate-elliptical, gently asymmetrical, 1.0–2.2 × 0.5–1.2 mm (Fig. 1 B View Figure 1 ); the apex obtuse, not denticulate; laminal cells linear, 50–140 × 10–21 μm at midleaf (Fig. 1 E View Figure 1 ), cell areolation quite loose; decurrencies broad, alar cells rounded.

Distribution.

Asia ( China, Islamic Republic of Iran, Japan, Nepal, Russian Federation, Turkey); Europe ( Austria, Bulgaria, Czech Republic, Finland, France, Germany, Hungary, Iceland, Ireland, Italy, Kosovo, Luxembourg, Montenegro, Netherlands, Poland, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom); North America ( Canada, U. S. A.).