410 
94. FILICES. 
Earlier fronds barren, later fertile, laneeolate, 2 or 3 lowest pairs 
of jiimiiE decreasing in size. Lobes blunt entire, at first sight 
they apj)car acute on the fertile fronds from the revolute mar- 
gins ; lateral veins alternate forked extending to the edge. Sori 
at length confluent, midway between the midrih and edge. 
Rhizoma creeping widely. — Marshy and boggy places, rather 
rare. P. VII. VIlI. Marsh Fern. 
2. L. Oreopteris (Presl) ; fronds j)innate, pinnae linear-lan- 
ceolate pinnatifid glandular hencath gradually decreasing from 
about the middle of the frond to near the root : lobes oblong, 
fiat, sori marginal. — Aspidimn Sm., if. £. 1019. iV. 187. — 
Fronds remarkably narrowed downwards, rising in a circle from 
a tufted rhizoma, fragrant when hruised from the numerous 
glands on their under surface. Lobes blunt, entire : lateral veins 
simple or forked. Height 2 — 3 feet. The indusium is often 
scarcely distinguishahle when the ])lant has all the apj)earance of 
a Polypodium. — Mountain heaths. P. VII. Sweet Mountain 
Fern. 
3. L. Filix-mas (Presl) ; fronds bipinnate, pinnules obtuse and 
serrated, sori near the central nerve, lateral nerves forked. — Aspi- 
dium Sm., E. B. 1458. N. 198. — Fronds only slightly narrowed 
downwards and the lowest leaflet of considerable size, rising in 
a cu-cle from the tufted rhizoma. Pinnules usually a little com- 
bined at the base. Stipes and rachis nearly glabrous, yellow', or 
densely clothed with purple scales. Indusium very persistent. 
Height 3 — 4 feet. — Sori confined to the hase of the pinnules in 
a dw'arf variety 1 ft. high (/3. abbreviatum DC.) from Cumberland 
and Yorkshire. Mr. Finder ; and Wyck, Gloucestershire. — 
Woods and banks. P. VI. VII. Male Fern. 
4. L. crista ta (Presl); fronds linear almost doubly pinnate, 
pinna; short triangular-oblong pinnatifid, pinnules serrated the 
lowermost lohed and almost pinnatifid, lateral nerves of the lobes 
with several branches. — Aspidium Sm., E. B. 2125. N. 203. — 
F'rouds long and narrow, quite erect, broad at the base, from a 
tufted rhizoma. Stipes very long, with scattered large hrown 
blunt scales. Lateral nerves with numerous branches in the 
Holt plant, fewer in that from Oxtoii. Height about 2 feet. — 
Bogs and boggy heaths. Holt, and Fritton-broad, NoiT. Near 
Lynn, Suff. Oxton bogs, Notts. P. VIlI. E. 
5. L. rigida (Presl); fronds triangular-lanceolate bipinnate 
glandular, pinnules oblong blunt lobed and seiTate, segments 
2 — 5-toothed not spinulose, lateral nerves 3-fid, indusium per- 
sistent fringed. — Aspidium Hook., E. B. S. 2/24. N. 191. — 
Fronds erect, lanceolate w ith the lower jiinnse rather short and 
triangular ; or triangular with the lower pinna; elongated ; upper 
pinna; narrow; all pinnate. Pinnules truncate below with a 
