Plagiothecium longisetum Lindb.

Plagiothecium longisetum Lindb. View in CoL , Contributio ad Floram Cryptogamam Asiae Boreali-Orientalis 232. 1872 [1873].

= Plagiothecium roeseanum var. heterophyllum Warnst. View in CoL , Kryptogamenflora der Mark Brandenburg, Laubmoose 814. 1906 ≡ Plagiothecium roeseanum fo. heterophyllum (Warnst.) Jedl., Spisy Vydávané Přírodovĕdeckou Fakultou Masarykovy University 308: 40. 1948. Type: Germany, Brandenburgia, Neurippen, Ruppin, auf Waldboden, Böschungen im “ Flössergrunde ”, C. Warnstorf; Westprignitz, Forsthaus “ Alte Eiche ”, auf Waldboden am Standort von Osmunga regalis, Janzen und C. Warnstorf; Wittenberge, Westprignitz, am Grunde eines Baumstammes, “ Krauses Brack ”, C. Warnstorf; Ratzburg, Buchenwälder, Prahl. Poland, Świnoujście, Weg nach Corswant, R. Ruthe (n. v.).

= Plagiothecium mauiense Broth. View in CoL , Bernice P. Bishop Museum Bulletin 40: 28. 1927. Lectotype (designated by Wolski and Proćków 2021): [ United States,] Hawaii, E. Maui, Haleakala, 8000 ft., in damp ravines, fertile, June 1876, D. D. Baldwin 221, NY 01256708! Isolectotype: FH 00220142!, MU 000000546!, YU 233890!

= Plagiothecium sylvaticum var. neglectum fo. orthocladum Barkman, nom. inval., Buxbaumia, 11: 23. 1957. Type: no type was specified.

Type.

[ Japan,] ad Nikosan ins. Kiusiu, [fertile], 16 Junii 1863, S. O. Lindberg. Lectotype (designated by Wolski and Proćków 2020): H-SOL 1563011! Isolectotype: S-B 160017, PC 0132572!

Description.

Plants medium-sized to large, green to yellowish, without metallic luster; stems 2–3 cm long; leaves complanate, concave, strongly asymmetrical, ovate to lanceolate, 3.0–4.0 × 1.6–2.0 mm (Fig. 4 B View Figure 4 ); the apex acute to acuminate, not denticulate; laminal cells elongate-hexagonal, in irregular transverse rows, 94–150 × 17–34 μm at midleaf (Fig. 4 E View Figure 4 ), cell areolation very loose; decurrencies of 3 rows of rectangular cells; capsule inclined.

Distribution.

Asia ( China, Georgia, India, Islamic Republic of Iran, Japan, Nepal, Russian Federation, Turkey); Europe ( Austria, Belgium, Denmark, Estonia, Finland, France, Germany, Norway, Poland, Spain, Sweden, Switzerland, United Kingdom); North America ( Canada, U. S. A.).