B. Papp szerk.: Studia Botanica Hungarica 39. 2008 (Budapest, 2008)

Erzberger, P.; Schröder, W.: The genus Schistidium (Grimmiaceae, Musci) in Hungary

Sporophytes common, shallowly immersed, much exposed in lateral view. Urn light brown, sometimes faintly striolate, widest at about middle, length/width ratio (l.9-)2.

1-2.4-3.1 (BLOM 1996), in Hungarian material 2.15, n = 1. Exothecial cells irregular in size and shape, predominantly elongate. Stomata 8-10(—

12) per urn. Peristome teeth 300-440 urn, orangered, narrow and longly tapering to a very thin and fragile point, frequently perforated. In typical plants, the strongly sinuose, incrassate leaf cells, somewhat resembling those in Racomitrium, are very characteristic (Fig. 32E). Plants from moist, shaded habitats can have less sinuose leaf cells. S. robustum can superficially approach S. elegantulum, but differs in the decurrent hair-point (Fig. 32B), usually not pronounced leaf bistratosity, a distinct central strand, and in leaf areolation as well as urn shape, long and narrow in S. robustum (Fig. 32F). Habitat: In Hungary as in Scandinavia S. robustum grows on + dry calcareous rocks (limestone, dolomite) in exposed or moderately shaded sites. Associated bryophytes: Scbistidium crassipilum. Vertical distribution: 200-770 m a.s.l. Fig. 33. Distribution of Scbistidium robustum Selected specimens examined: Bükk Mts: 8088/1 Felsötárkány, Mész-völgy, auf grobem Kalkschotter, 03.04.2002, leg. P. Erzberger and T. Poes, herb. Erzberger, (B) 8024; Pilis Mts: 8379/1 Comit. Pest: in m. Pilis, 19.09.1909, leg. G. Lengyel, BP 110898; Vértes Mts: 8576/1 Comit. Fejér. In saxis dolom. silvat. versus Várgesztes prope Vérteskozma, 400 m, 24.04.1932, leg. Á. Boros, BP 110826; Bakony Mts: 8873/2 Möns Tobán, ad rupes, 10.06.1932, collector unknown, BP 26270; Keszthely Mts: 9270/1 County Veszprém. On exposed calcareous rock Szamár-kő in valley Kígyós-völgy at Balatongyörök, 200 m, 18.10. 1999, leg. B. Papp BP 166860.