Calypogeia suecica (Arnell & J.Perss.) Müll.Frib.

Unan, Ayşe Dilek & Ören, Muhammet, 2021, New and noteworthy records of deadwood dwelling bryophyte species for Turkey and Southwest Asia, Cryptogamie, Bryologie 20 (4), pp. 33-44 : 34-35

1. Calypogeia suecica (Arnell & J.Perss.) Müll.Frib.

( Fig. 2 )

Botanisches Centralblatt 17: 224 (1904).

SPECIMEN EXAMINED. — Turkey. Bolu province, Mudurnu district, Derebalık plateu, 40°41’02”N, 031°05’12”E, on decayed Alnus glutinosa log, 1349 m. a.s.l., 02.IX.2018, Unan & Ören 237.4/A, ZNG.

ECOLOGY. — Calypogeia suecica is acidophyte, mesophyte, and adapts to various light conditions (Dierssen 2001). Even though this species mainly colonizes on damp, decorticated logs, it occasionally grows on peat ( Paton 1962; Smith 1996; Dierssen 2001; Frey et al. 2006; Casas et al. 2009).

Turkish Calypogeia suecica was collected from very damp Alnus glutinosa stump that had decayed to stage 4 according to Ódor & Van Hees (2004) in a brookside habitat in oriental beech and Trojan fir dominated forest. The dimensions of the stump were 20 × 50 cm. 60% of the visible surface of the woody material was covered with the following bryophytes (listed alphabetically): Cephaloziella divaricata (Sm.) Schiffn. , Dicranum scoparium Hedw. , Fuscocephaloziopsis lunulifolia , Lophozia ventricosa (Dicks.) Dumort. , Rhizomnium punctatum (Hedw.) T.J.Kop. , Riccardia palmata (Hedw.) Carruth.

DISTRIBUTION. — Calypogeia suecica has a wide northern hemisphere distribution. This species has been recorded from various European countries, Russia, and also from the United States and Canada ( Stotler & Crandall-Stotler 1977; Potemkin & Sofronova 2009; Hodgetts & Lockhart 2020). The Turkish record of C. suecica is at approximately the southernmost limit of the Asian distribution of this species.

CONSERVATION. — Even though Calypogeia suecica has a wide European distribution, this species is under threat in various countries (NT in the Great Britain, Czech Republic and Italy; VU in Bulgaria, Sweden and Poland; EN in Finland, Hungary, Serbia, and Spain; CR in Luxemburg, and Portugal). Besides, in Ireland and Northern Ireland, this species is regionally extinct ( Hodgetts & Lockhart 2020). Even though C. suecica was found on only one sampling point, there is no specific study about peat; the secondary substratum of this species in the study area. Because of that, the Turkish conservation status should be assigned as “DD”.

DESCRIPTION

Plants

Green; shoots prostrate, 0.8-1 cm long and 0.8-0.9 mm wide.

Leaves

Incubous, imbricate, entire, subacute to obtuse-rounded, sometimes trunctate, 0.5-0.8 mm long and 0.4-0.6 mm wide. Mid-leaf cells mostly ±isodiametric, sometimes elon-

gate, 26-40(45) µm long and 21-33 µm wide; trigones small, triangular, distinct; cuticle smooth.

Underleaves

Subtransversely inserted, suberect, base distincly decurrent, bilobed to ½-⅔, 2-6 cells deep from sinus to elliptical rhizoidal initial zone; sinus pointed to rounded. Underleaf lobes divergent, slightly acute to obtuse, sometimes with an indistinct tooth or knob at the outer margin near the apex, 0.2-0.4 mm long and 0.3-0.6 mm wide, twice as wide as stem. Underleaf cells are slightly longer than wide, 30-40 µm long and 20-30 µm wide. Oil bodies 1-5 per cell, 5-9 µm long and 3-4 µm wide, simple to 2-5 segmented ( Fig. 2E ).

Gemmae, perianths, sporophytes and male plants

Not recorded in the studied specimen.

Figures

FIG. 2. — Calypogeia suecica (Arnell & J.Perss.) Müll.Frib.: A, habitus; B-C, underleaves; D, leaf; E, median leaf cells and oil-bodies. Scale bars: A, 3 mm; B-D, 200 μm; E, 50 μm.