FILICES. 
389 
wedgeshaped notched or toothed at the end, indusium jagged. — 
E. B. 150. — Fronds 3 — 4 in. long. — Rocks and old walls. P. 
V.— IX. Wall Rue. 
4. A. altermfoHum (VVulf.) ; fronds simply and alternately pin- 
nate, pinnules narrow-wedgeshaped the lowermost ternate, in- 
dusium entire at the edge. — E. B. 2258. — Fronds 3 — 4 in. long. 
— Rocks, very rare. P. VI. — IX. S. 
5. A. septentrionah (Hull) ; fronds 2- or 3-cleft, segments 
elongate-lanceolate bifid. — E.B. 1017. Newm.7Z. — Segments of 
the fronds very narrow, narrowing gradually downwards, with 
1 or 2 short bifid lateral teeth, and bifid at the end. — Dry clefts 
of rocks, rare. P. VI. — X. E. S. 
6. A. marinum (L.) ; frond linear simply pinnate, pinna? 
stalked ovate or oblong serrate unequal and wedgeshaped at the 
base. — E. B. 392. Newm. 75. — Varying greatly in size. Sori 
not confluent. — Maritime rocks. P. VI. — X. 
7. A. viride (Huds.) ; frond linear pinnate, pinnae roundish- 
ovate or rhomboidal crenate stalked, nerves simple or forked be- 
yond the sori. — E.B. 2257. Newm. 78. Rachis green. — Rocks 
on mountains. P. VI. — X. 
8. A. Trichomanes (L.) ; frond linear pinnate, pinna? roundish- 
ovate crenate stalked, nerves forked below the sori.—E. B. 576. 
Newm. 80. — Rachis black. I have gathered in Teesdale and Mr. 
S. Gibson has sent to me from near Burnley a curious variety of 
this plant with its pinna? deeply but irregularly pinnatifid with 
linear notched segments. — Rocks and walls. P. V. — X. Com- 
mon Spleenwort. 
9. SCOLOPENDRIUM Sm. 
1. S. vulgare (Sym.) ; frond oblong strapshaped smooth sim- 
ple with a cordate base, stripes shaggy. — E. B. 1150. Newm. 82. 
— Fronds 1 — 2 feet long, acute, often crisped towards the end 
and occasionally the end is multifid. — Damp and shadv places. 
P. VII. VIII. Hart's-tongue. 
Tribe IV. Grammitidea. 
10. Ceterach Willd. 
1. C. Officinarum (Willd.) ; fronds pinnatifid covered beneath 
with dense scales, pinnae alternate or opposite obtuse sessile. — 
Scolopendrium Ceterach Sm. E. B. 1244. — Fronds 3 — 6 in. long, 
green and smooth above, wholly covered by very numerous scales 
beneath, amongst which the thecae are almost hidden. — Old walls 
and rocks. P. IV. — X. 
