Plagiothecium sylvaticum var. immersum (Mönk.) G. J. Wolski 2025

Plagiothecium sylvaticum var. immersum (Mönk.) G. J. Wolski comb. nov.

≡ Plagiothecium platyphyllum fo. immersa Mönk. , Die Laubmoose Europas 867. 1927. Type: [ Germany,] Aus dem Harze, Thüringen, der Rhön, dem Fichtelgebirge, aus Böhmen, dem Bayerischen Walde, Mähren, der Schweiz (Kanton Uri), Norditalien (Provinz Como) und Bulgarien mir bekannt geworden. Lectotype (designated here): [ Switzerland,] Kanton Uri, Schöllenen , 1100–1400 m, 18 August 1884, Lorrens, HBG- 021127!

Description.

Plants large, dark green, dull, without metallic luster; leaves asymmetrical, complanate, ovate, not imbricate and not julaceous, 3.4–3.6 × 1.4–2.0 mm (Fig. 3 B View Figure 3 ), often with rhizoids on the dorsal side of the leaf (Fig. 3 E View Figure 3 ); the apex acute and denticulate, often eroded (Fig. 3 C View Figure 3 ); laminal cells 90–150 × 8–16 μm at midleaf, cell areolation loose; decurrencies long, consisting of 3–5 rows of rounded and inflated cells; capsule unknown so far.

Distribution.

Europe ( Bulgaria, Czech Republic, Italy, Switzerland), but the range of this taxon still requires research.