Plagiothecium decursivifolium Kindb.

Plagiothecium decursivifolium Kindb. in Macoun & Kindberg, Catalogue of Canadian Plants, Part VI, Musci 277. 1892. = Plagiothecium curvifolium fo. julaceum Culm. in E. Bauer, Musci Europaei Exsiccati 27: 1307. 1915. Lectotype (designated by Wolski et al. 2022 a): Switzerland, auf Tannenwurzeln ini der Nähe der oberen Waldgrenze, Burgfeld ob Beatenberg, Kanton Bern, 1630–1700 m, 31 July 1912, Musci eur. exs. 1307, P. Culman, C-M- 9120! Isolectotype: MO 3974490! Type material. Lectotype (designated by Wolski et al. 2022 a): Canada, Ontario, Belleville, on cedar (Thuja occidentalis) stump in a swamp, 5 miles west of Belleville, Ont. J. Macoun, N. C. Kindberg, PC 0132686! Kindberg Canadian types should be at S with duplicates at CANM Description. Plants medium-sized to small, yellow to yellow-green; stems 0.5–1.5 cm long; leaves gently julaceous and imbricate, folded, ovate to ovate-lanceolate, asymmetrical, concave, often cracked at the base, 1.3–2.5 × 0.4–1.8 mm (Fig. 10 A); the apex acuminate, not denticulate or rarely with one tooth; cells linear-vermicular, 95–190 × 6–10 μm at midleaf (Fig. 10 D), cell areolation tight; decurrencies of 3–5 rows of rectangular, quadrate, often inflated cells forming semi distinct auricles. Distribution. Asia (China); Europe (Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Hungary, Latvia, Netherlands, Poland, Slovakia, Sweden, Switzerland); North America (Canada).