B. Papp szerk.: Studia Botanica Hungarica 34. 2003 (Budapest, 2003)
Szurdoki, Erzsébet: Peat mosses of North Hungary
specimens were identified as S. angustifolium by the author (annotated with "cf" on the label of the specimens), on the basis of a remark made by DANIELS and EDDY (1985): "the large resorption gap in apical angles on the abaxial surface of pendent branch leaves are characteristic and stable features of S. angustifolium" . In Hungary it is a frequent peat moss, living in habitats similar to those of S. fallax: bogs, intermediate mires, fens, and sometimes in willow or alder swamps. S. angustifolium is relatively frequent in North Hungary, too (Table 1). Earlier it was published only from Nyírjes-tó (BAKALÁR 1981), but it was also collected at Kis-Mohos and Nagy-Mohos (SZURDOKI et al. 2000), Kis-tó, Báb-tava, Navat (recent revision of the S. recurvum s. I. material of the Bryophyte Herbarium of BP by the author). Recently it occurs in Nádas-tó, Nyírjes-tó, Mohos lakes, Báb-tava and Nyíres-tó. In Nádas-tó they live in a willow swamp. From the S. recurvum complex LÁJER ( 1998«, b) reported only S. fallax, while the author found only S. angustifolium (in 1997), but all specimens have the above mentioned mixed features. It lives in Nyírjes-tó, but mainly in associations of the middle part. Presently, it lives in all parts (associations) of Kis-Mohos and Nagy-Mohos, and in Kis-Mohos it seems to be more frequent than S 1 . fallax. It also lives in the Bereg Plain, most frequently in Báb-tava, basically in all associations. In Nyíres-tó it occurs sporadically, in that locations S. fallax is the most frequent peat moss, while S. flexuosum is also present in higher amount. S. angustifolium is also relatively widespread in North Hungary. Similarly to S. fallax, it is common in the larger mires. Generally speaking the future status of S. angustifolium appears safe and sound. Sphagnum flexuosum Dos. et Molk. This is a medium-sized plant, with green to ochre colour. The stem cortex is not distinguishable from the cortex and the triangular stem leaves have obtuse, rounded apices sometimes with a small notch on the tip. The branch leaves are not consistently 5-ranked and they are relatively large (up to 3 mm). The hyaline cells of pendent branch leaves are proportionately wider and have about 12 pm-sized pores on the adaxial surface. It is also an important feature that the photosynthetic cells are trapezoid shaped (in cross section) and exposed on both adaxial and abaxial surface (while S. fallax and S. angustifolium have triangular shaped photosynthetic cells and are exposed only on the adaxial surface) (DANIELS and EDDY 1985). S. flexuosum is not frequent in Hungary, this is the rarest species of the S. recurvum complex. It lives in bogs, intermediate mires and fens.
