Hymenophyllum .] 
FERNS. 
61 
serrated or toothed, linear and blunt pointed, running into each 
other, and seated chiefly on the upper side of what may be called 
the midrib of the pinna, but not wholly confined to that. side, as in 
the next species. Receptacles formed from and in the place of the 
last lobe, on the upper side of each pinna ; thus they appear in two 
rows, one on each side of the rachis. The receptacle is composed 
of two flat or slightly convex, roundish valves, folding over each 
other, and sharply serrated at the points ; between which is a free 
column covered with thecae. 
Sit. — On damp, shady rocks, generally among moss. 
Hab. — On the moist and shady sides and fissures of the various rocks near 
Tunbridge Wells, viz., the High Rocks, and the rocks in Eridge Park (abundant, 
1835), Mr. W. Pamplin. Clefts of the rocks at Wistman’s Wood, Dartmoor ; 
rocks by Dunsford Bridge, Becky Fall, &c., Devon, Flo. Dev. Greenfield, 
near Saddleworth (very rare), Mr. W. Wilson. Near Halifax, Mr. Leyland. 
Near Cader Idris and Dolgelle, Mr. Bowman. Very abundant and fine near the 
Upper Lake, Killarney, Mr. W. Wilson. Powerscourt Waterfall, Glencree, and 
other places in the county of Wicklow, Mr. Mackay. 
Geo. — This and probably the next species are scattered over Europe from 
Italy to Norway. 
2.— HYMENOPHYLLUM WILSONI. 
NORTHERN FILMY-FERN. SCOTTISH FILMY-FERN. 
(Plate 6, fig. 5.) 
Cha. — Frond pinnate. Pinnae semi-pinnatifid, recurved. Lobes 
serrate. Rachis not winged. Receptacle ovate, entire. 
Syn. — Hymenophyllum Wilsoni, Ilook in Br. Flo., Mack., Netvm. 
Fig. — E. B., suppl. 2686. Newm.,p. 94. 
Des. — Rachis rigid, capillary, winged at the top. Frond 1 or 
2 inches high, dark green. Pinnae alternate, bent backwards, 
growing horizontally rather than vertically as in the last species, 
besides wbich the lobes curve downwards, so that when the edge of 
them is looked at they have a falcate appearance, although they 
are oblong and blunt, and it may be added, very sharply serrated. 
When in fruit, all the leafy expansions turn in one direction, and 
the fruit in the opposite. The receptacles are situated as in the last 
species, but are larger, very convex, perfectly ovate, and entire. 
The absence of wings to the rachis, the different habit, the semi-pinnatifid 
character of the pinnae, and the entire, convex receptacles, serve to distin- 
guish this from Hymenophyllum Tunbridgense, with which it was confounded, 
until shown to be distinct by that accurate botanist, Mr. W. Wilson. — Miss 
Beever has sent me fronds from Coniston, which are much branched. 
Sit. — On moist alpine rocks, near waterfalls, & c. 
