Plagiothecium cavifolium Z. Iwats.

Plagiothecium cavifolium (Brid.) Z. Iwats., Journal of the Hattori Botanical Laboratory 33: 360. 1970. ≡ Hypnum (Stereodon) cavifolium Brid., Bryologia Universa 2: 556. 1827 ≡ Stereodon cavifolius (Brid.) Brid., Bryologia Universa 2: 824. 1827. Type: [Canada,] in terra habitat in insula Terre Neuve, La Pylaie, B-Brid 915! = Plagiothecium roeseanum Hampe ex Schimp., Bryologia Europea 5: 193, 504, table X. 1851 ≡ Hypnum roeseanum Hampe in Bruch, Schimper and W. Gümbel, Bryologia Europea 5: 193, 504. 1851, nom. inval. ≡ Plagiothecium sylvaticum var. roeseanum (Hampe ex Schimp.) A. W. H. Walther & Moldendo, Die Laubmoose Oberfrankens 177. 1868 ≡ Plagiothecium denticulatum var. roeseanum (Hampe ex Schimp.) Hérib., Mémoires de l’Académie des Sciences, Belles-lettres et Arts de Clermont-Ferrand, Deuxième Série, 14: 228. 1899 ≡ Plagiothecium denticulatum subsp. roeseanum (Hampe ex Schimp.) Grout, Moss Flora of North America 3: 158. 1932. Type: [Germany,] Ad terram arenosam sub Fagis in monte Inselberg Thuringiae cl. A. Roese legit atque nobiscum benevole communicavit, JE 04004196!, JE 04004197!, JE 04004198!, JE 04004199!, HBG- 021130! = Plagiothecium orthocladium Schimp., Bryologia Europea 5: 193, 504, table X. 1851 ≡ Plagiothecium sylvaticum var. orthocladium (Schimp.) Schimp., Corollarium Bryologiae Europaeae 115. 1856 ≡ Hypnum sylvaticum var. orthocladium (Schimp.) Husn., Flore Analytique et Descriptive des Mousses du Nord-Ouest, 2 Edition 149. 1882 ≡ Plagiothecium roeseanum var. orthocladium (Schimp.) Limpr., Die Laubmoose Deutschlands, Oesterreichs und der Schweiz 3: 262. 1897 ≡ Plagiothecium denticulatum var. orthocladium (Schimp.) Hérib., Mémoires de l’Académie des Sciences, Belles-lettres et Arts de Clermont-Ferrand, Deuxième Série, 14: 229. 1899 ≡ Plagiothecium sylvaticum fo. orthocladium (Schimp.) Barkman, Phytosociology and Ecology of Cryptogamic Epiphytes 619. 1958, comb. inval. ≡ Plagiothecium cavifolium var. orthocladium (Schimp.) Z. Iwats., Journal of the Hattori Botanical Laboratory 33: 371. 1970. Type: In m. Donnersberg Vogesi inferioris, Th. Gumbel legit auno 1842 (n. v.). = Plagiothecium attenuatirameum Kindb., Catalogue of Canadian Plants, Part VI, Musci 277. 1892 ≡ Plagiothecium laetum subsp. attenuatirameum (Kindb.) Kindb., Canadian Record of Science 6 (2): 72. 1894. Type: Canada, Québec, Chelsea in Gilmour’s Park, on rock, J. Macoun 417, 6 September 1889, herb. I. Thériot, PC 0132687! = Plagiothecium roeseanum var. angustirete Warnst., Verhandlungen des Botanischen Vereins der Provinz Brandenburg 42: 214. 1900 ≡ Plagiothecium roeseanum fo. angistirete (Warnst.) Jedl., Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 308: 39. 1948. Type: Germany, Brandenburg, Chorin (Mark), Hohlweg am Bach, am Waldhohlwege im „ Forstarten ” mit Eurhynchium schleicheri, L. Loeske, 10 Sep. 1899, herb. H. Dohl, JE 4004200! = Plagiothecium roeseanum var. japonicum Cardot, Bulletin de la Société Botanique de Genève, sér. 2, 4: 385. 1912. Type: Japan, Aomori Pref., Faurie 408 (“ P. silvaticum var. orthocladum Sch. ”), herb. J. Cardot, PC 0132574!; idem, Faurie 418; Kanita, Faurie 1812; Hirosaki, Faurie 1878; Osorezan, Faurie 2104; château d’Akita, Faurie 2904; Nayoro, Faurie 3078 in parte; Sambongi, Faurie 3190; Otaru, Faurie 3753; Tobetsu, Faurie 3761, KYO. Description. Plants small-sized, yellowish-green to light green; stems 2–4 cm long; leaves julaceous, concave, imbricate, symmetrical, more or less folded, 1.2–2.5 × 0.6–1.0 mm (Fig. 6 A); the apex not denticulate; laminal cells 100–150 × 10–12 μm at midleaf (Fig. 6 B), cell areolation quite loose; decurrencies of 2–3 rows of rectangular to quadrate cells; setae 1.8–2.5 cm; capsule inclined. Distribution. Europe (Czech Republic, Denmark, Finland, Germany, Italy, Lithuania, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, United Kingdom).