2627
G R I M M I A saxicola.
Sandstone Grimmia.
CRYPTOGAMIA Musci.
Gen Char. Fruitstalk terminal. Peristome simple,
of 16 entire or perforated, rarely cleft, equidistant
teeth.
Spec. Char. Stem scarcely any. Leaves linear-subulate,
crisped when dry. Pruitstalks geniculate.
Capsule oblongo-ovate. Lid rostrate, straight.
Syn. Grimmia saxicola. Hook. § Tayl. Muse. Brit,
ed. 2. 67.
G. geniculata. Schwcegr. Suppl. v. 1. 82. t. 22.
Funck, Deutschl. Moose. 1.11. n. 1.
Dicranum saxicola. Web. § Mohr. FI. Crypt.Germ.
167. §4666.
Campylopus saxicola. Brid. Meth. 72.
C. curvifolius. Brid. Meth. 78.
Weissia geniculata. Brid. Meth. 38.
F o r the discovery of this rare and very distinct Moss in
Britain, we are indebted to Mr. Borrer, who gathered it in
1822 upon sandstone, in the course of an occasional torrent,
on Black Down, Sussex. It grew intermixed with Weissia
trichodes, to which it has much general affinity : but the
peristome is entirely different in the two species. Dr. Tay-
lo finds it also upon granite rocks in the Dublin mountains.
It grows in rather loose tufts, of an olive-brown colour.
Stem scarcely any. Leaves rather subulate than linear,
for they are broader at the base, and taper gradually from
that broad base upwards, quite entire at the margin. The
fruitstalk is more than twice as long as the leaves, singularly
curved, and almost always so suddenly as to be genicu