SUB-SECTION LASTREA, AND POLYPODIUM. 1 49 
13. interruptum, Moore. Found near Harrogate by the late Mr. 
Clapham, and also in the Hole of Hercum, by the late Mr. Monk- 
man. Pinnules irregular, some wanting. 
14. polydactylum, Wollaston. Found by Mr. Turner. Many- 
finger crested. 
15. remotum, Lowe (Lastrea remota, Moore). Found in 1859, 
at Windermere, by Mr. F. Clowes (this and hybridum might equally 
be placed with N. Filix-mas, though the resemblance is nearer the 
present species ; they are hybrids between the two). Fronds erect, 
oblong lanceolate, smooth ; basal pinnae unlike N. spinulosunr. 
Copiously soriferous ; but after a score trials I have failed to raise 
one plant. Length, 3! feet. It has also been found in Germany. 
1 6. stipitato-laciniatum, Birkenhead. Length, 2 feet. 
17. tanacetifolium, Moore. Is not uncommon. A large tripinnate 
variety with triangular fronds. 
Tribe 11. POLYPODIE/C. 
THE BEECH FERN. 
Polypodium Phegopteris.— Linnceus. 
A beautiful fern, creeping along damp ground, either in woods or 
on shady banks, and is more abundant in mountainous districts 
The entire length of the frond varies from 1 inch (under rocks near 
the summit of Ben Lawers, E. J. L.) to 20 inches in woods at 
Hackness, near Scarborough (and near Ambleside), one-half of 
which is stalk. Some few years ago there were carpets of this fern 
in woods near Scarborough, more than a dozen yards across, with 
not a single vacant spot. It inhabits fourteen counties in England, 
seven in Wales, seven in Ireland; the Isle of Man ; and Shetland; 
and it is generally distributed through Scotland. Found throughout 
Europe, and extends from Italy to Iceland. Widely spread in 
North America, also Kamtschatka and the Altai Mountains. The 
frond is ovate-triangular ; the basal pair of pinnae curved down- 
wards, and the pinnae narrow from the base upwards. Colour, pale 
dull-green. 
Varieties. 
1. caudatum, Lowe. Found on Ben Lawers by myself. A very 
dwarf form with a caudate apex ; somewhat depauperate. 
2. Fosteri, Lowe. A beautiful laciniate form. Found by Mr. 
Foster in the Lake district. 
3. interruptum, Barnes. Length, 4 inches. Found at Wither- 
slack by Mr. J. M. Barnes, of Milnthorpe, in 1863. This is a very 
narrow, irregular form ; the pinnae being variable in size, their 
apices truncate, and the tip of the fiond tail-like. 
4. laceratum, Druery. Found in 1889, near Settle, by Mr. Bar- 
raud. Fronds approaching P. vulgare, var. cambricum, in cutting. 
5. multitldum, Moore. Differing in having a portion of the lobes 
multifid and longer ; and in the tips of the pinnae being crested. I 
