THE GENUS SCHISTIDIUM (GRIMMIACEAE, MUSCI) IN HUNGARY ...

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66 ERZBERGER, P. and SCHRÖDER, W. Distribution of Schistidium papillosum (Mitt.) H. Perss. (Figs 27, 29) Plants small to medium-sized, forming dense or lax tufts. Central strand distinct, but narrow. Hair-point 0–0.3 mm, frequently yellow or reddish in lower part or throughout, thin and narrow, not decurrent. Costa smooth, margins entire or irregularly denticulate just below apex. Lamina smooth, in upper and central parts partly bistratose or more rarely unistratose. Lamina cells slightly incrassate, collenchymatous, in upper part of leaf ± isodiametric and shortly elongate, 9–11 μm wide, in central and lower parts more elongate. K+ red. Sporophytes occasional to frequent, immersed. Urn yellowish to red-brown, subspherical to obovoid (cyathiform when old), length/width ratio 0.8–1.3 (BLOM 1998), not measured in Hungarian material. Exothecial cells thin-walled or slightly incrassate, in central and lower part of urn predominantly shortly elongate, forming a ± regular pattern. Stomata absent. Peristome teeth 380–570 μm, red, tapering to a narrow point, semiperfoated in lower part, strongly irregularly perforated in upper part. Spores finely granulose, 16–24 μm. This is in Hungary the only species of the Rivulare group, which is characterised by spores (16–24 μm) larger than those of the Schistidium apocarpum complex ((8–)9–10.4–12(–19) μm). Studia bot. hung. 39, 2008
THE GENUS SCHISTIDIUM IN HUNGARY 67 A B C D F E G I H Schistidium platyphyllum. = leaves; = perichaetial leaf; = leaf apex; = capsule; , = exothecial cells at mouth of urn / at mid urn; , = seta surface cells in upper / lower part of seta; = part of peristome. Scale bar: A, B, D – 2 mm; I – 400 μm; C, E–H – 200 μm. [A–C, E–H: BP 163340; D, I: Erzberger 12625 (Sweden, Abisko), del. Erzberger] Studia bot. hung. 39, 2008
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THE GENUS SCHISTIDIUM (GRIMMIACEAE, MUSCI) IN HUNGARY ...

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