B. Papp szerk.: Studia Botanica Hungarica 34. 2003 (Budapest, 2003)

Szurdoki, Erzsébet: Peat mosses of North Hungary

recurvum complex only S. angustifolium was collected. A possible answer for the difference in the identification is found with the description of S. angustifolium (see below). From Nyírjes-tó it was collected earlier (recent revision of S. recurvum specimens of BP). Nowadays it is living in the open area (Caricetum lasioearpae-Sphagnetum) and in a willow dominated part (Salici cinereae-Sphagnetum) (KRÖELDULAY 1995, LÁJER 1998« and the collections by the author in 1994, 2000). S. fallax also present in the Kis-Mohos and Nagy-Mohos. The author has found it in most of the important communities (SZURDOKI et al. in press), but LÁJER (1998«) published it only from the open parts of the two bogs (Carici lasioearpae-Sphagnetum) and from the Betulo pubescentis-Sphagnetum of NagyMohos. In the Zemplén Mts, it can be found around springs, in waterstanding places, on moist roadside embankments and on wet forest soils. All of these (in the Zemplén Mts) are relatively new establishments (SZURDOKI et al. 2000). In Nyíres-tó S. fallax is frequent, it can be found in Eriophoro vaginati-Sphagnetum and Betulo pubescentis-Sphagnetum (LÁJER 1998«, b, PAPP et al. 2000 and collections by the author in 1994, 1999, 2000). Báb-tava also contains S. fallax (LÁJER 1998«), but the author has collected it only in 1994 and later only S. angustifolium. To sum up, S. fallax is relatively widespread in North Hungary. It occurs in larger mires with relatively high abundance. It appears that S. fallax will thrive in the upcoming decades. Sphagnum angustifolium (Russ.) C. Jens, in Tolf. This is a medium-sized or smaller plant with green or sometimes brownish colour. The stem cortex is not distinct and the stem leaves are equilateral triangle shaped with eroded apices. The branches are dimorphic, the pendent ones are thinner and longer, than the spreading ones. The branch leaves are not consistently 5-ranked. The hyaline cells of pendent branch leaves are wider in the apical end than the basal end (best observed in lower-lateral part of the leaf) and there are numerous large pores (12-18 pm) in the apical angles on the abaxial surface (DANIELS and EDDY 1985). In Hungary, numerous specimens were collected, which show mixed characteristic features of S. fallax and S. angustifolium. The most frequent combination is the following: more or less equilateral shaped stem leaves with acute apices, large (>15 pm) resorption gaps (or pores) in the apical end of hyaline cells of pendent branch leaves and the stem cortex is not or only very shallowly distinct. These