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

THE GENUS SCHISTIDIUM IN HUNGARY 75
ARTIFICIAL KEY FOR SCHISTIDIUM IN HUNGARY
Apart from the 15 taxa found in Hungary, several others have been reported
from parts of Central Europe (BLOM 1996, 1998, BLOM and LÜTH
2002, GRIMS 1999), and might therefore occur in Hungary as well, though
hitherto undetected. Since the highest elevation of present-day Hungary is
1,015 m a.s.l. (RADÓ 1979), the occurrence of high-mountain and alpine
taxa is not to be expected. Taxa that have not yet been shown to occur in
Hungary, but might be expected, should, in our opinion, be included in a
key for naming taxa of Schistidium collected in Hungary. In addition to
those taxa that we have found in this revision, our key therefore includes
the following: S. elegantulum subsp. wilsonii, S. pulchrum, S. rivulare, S.
spinosum, S. trichodon var. nutans, S. trichodon var. trichodon.
Taxa that have been shown to occur in Hungary are printed in
type; taxa not printed in bold might occur in Hungary, but have not yet
been found.
Leaf lamina with papillae
Lamina smooth, but papillae sometimes at leaf margin and dorsal side
of costa
Upper lamina in part bistratose, papillae on both (dorsal and ventral)
sides of lamina; leaves never with red spots; up to 8 stomata per urn;
central strand distinct
Lamina unistratose or rarely with bistratose patches in upper part;
papillae numerous on dorsal side, sparse or missing on ventral side (if
present, then near margin, costa or apex); hair-point fine, often rather
long; lamina occasionally with red spots (absent in plants from shaded
sites); usually more than 8 stomata per urn; central strand absent or indistinct
(< 6 cells)
(siliceous rocks, also on old walls and concrete)
Studia bot. hung. 39, 2008