386 
FILICES. 
boggy heaths. Holt, and Fritton-broad, Norf. Oxton bogs, 
Nott. P. VIII. E. 
5. L. rigida (Presl) ; fronds lanceolate bipiunate glandular, 
pinnules oblong blunt lobed and serrate the segments 2 — 3- 
toothed not spinulose, lateral nerves 3-fid, indusium persistent 
fringed. — E. B. S. 2724. Newm. 55. — Fronds erect ; the lower 
pinnre rather short, triangular; upper ones narrow; all pinnate. 
Stipes short, scaly. Covered with minute stalked glands. Height 
1—2 feet.— Ingleborough and near Settle. P. VII. VIII. E. 
6. L. dilatata (Presl) ; fronds subtripinnate, lobes oblong 
blunt inciso-pinnatifid, segments spinose-mucronaXs, indusium not 
fringed deciduous. — Neirm. 58. — cc. triangularis ; frond broadly 
triangular nearly triply pinnate mostly arched, lobes generally 
convex with a nearly straight midrib, indusium minutely denticu- 
late at the margin. Aspidium dilatatum (Sm.). A. dumelorum is 
only a small form of this plant which is often more erect, occa- 
sionally every part is concave instead of convex above. — (i. linearis; 
frond mostly erect scarcely more than twice pinnate often very 
narrow its sides nearly parallel in the lower part, lobes nearly flat 
withawwjr midrib, indusium" entire." A.spinulosum (Sm.) . Small 
forms of this are often called A. dumetorum. — I am in doubt if 
these plants are distinct species or varieties, but require a more 
perfect knowledge of them than I now possess. It appears that 
the A. spinulosum (Willd.) is a different plant, having "glandu- 
lose bristles " on its indusium ; if therefore Smith's plant proves 
distinct it will require a new name, and I would suggest Smithii 
as highlv appropriate. — Common. /3. less generally distributed. 
P. VII. VIII. 
5. POLYSTICHUM Roth. 
1. P. aeuleatum (Roth) ; fronds b\pinnate lanceolate, pinna? 
linear-lanceolate, pinnules stalked or decurrent ovate acutely- 
serrate. — Newm. 37. — A very variable species. — «. aeuleatum ; 
fronds broadly lanceolate, pinnules ovate acute nearly all stalked 
their base auricled on the upper edge oblique on the lower, lobe 
next the main rachis longer. In this plant only a few of the 
uppermost pinnules of each pinna are confluent, most of the pin- 
nules have a small auricle on the upper or outer side of their 
base, and the pinnule next the main rachis is nearly always con- 
siderably longer than the others. Aspidium aeuleatum Sm. — 
(i. angidare ; fronds broadly lanceolate, pinnules rather blunt 
nearly all stalked their base auricled on the upper edge oblique 
on the lower, pinnule next the main rachis scarcely longer than 
the others. Here a few of the uppermost pinnules are confluent, 
the auricle is larger in proportion to the pinnule and the lowest 
pinnule is often scarcely at all longer than the others. A. annu- 
lare Sm. — y. lobatum ; fronds narrowly lanceolate, pinnules de- 
current often confluent, pinnule next the main rachis longer and 
