68 : THE MICROSCOPICAL NEWS. 
the floral envelope, is Discel’um nudum, the raked Apple Moss. It 
is found on clayey declivities near Manchester, and near Todmor- 
den, also in Scotland. 
Of the Fissidentacex, or Flat Fork Mosses, three are in fruit in 
the early spring, all with terminal fructification. See Vol. 2. p. 272. 
One of the smallest of this genus is / exd/is, the slender Flat 
Fork Moss. ‘The stems are only + inch. in height, and recognised 
by the denticulate leaves destitute of border. 
fF. bryotdes, the common Flat Fork Moss, is frequent on shady 
banks, &c., with stems + to 3 in. high; leaves widely lanceolate, 
apiculate, with a thick cartilaginous border, dorsal wing broad at 
the base ; nerve sub-excurrent ; capsule elliptical, erect ; lid conical- 
acuminate ; barren flowers axillary. In similar localities with in- 
curved capsules is found / zacurvus. 
Connecting the acrocarpous with the pleurocarpous is a class 
Fig. 24. 
termed cladocarpous, having fruit terminal on a branch. To this 
class belongs C7nclidotus fontinalotdes, the smaller water Screw 
Moss, growing on rocks and stones in rivulets, and on the borders 
of lakes, and easily recognised by its abundant immersed capsules ; 
also Hedwigta ciliata, the hoary branched Beardless Moss, growing 
in extensive patches on exposed mountainous rocks ; the ovato- 
lanceolate, papillose leaves are diaphanous and ciliated at the apex. © 
Of the pleurocarpous Mosses Habrodon Notarisiz is found only 
on trunks of the elm and white thorn ; a well-known locality for this 
Moss being Killin in Perthshire. 
Rare in fruit and peculiarly Scotch, although found also in 
Ireland is Prerigynandrum filiforme, the thread-like Wing Moss. 
Thuyidium abietinum, the Spruce tree Feather Moss, is very 
