GUIDE
50. BROAD BEECH FERN
Phegopteris hexagonoptera
Larger than the preceding species, fronds triangular, as broad or broader than long, once-pinnate, pinnæ pinnatifid, lowest pair very large, basal segments of pinnæ forming a continuous, many-angled wing along the rachis. In dry woods and on hill-sides. P. 188.
51. OAK FERN
Phegopteris Dryopteris
Medium-sized, fronds thin and delicate, broadly triangular, spreading, ternate, the three divisions stalked, each division pinnate, pinnæ pinnatifid. In moist woods. P. 190.
52. BULBLET BLADDER FERN
Cystopteris bulbifera
Fronds delicate, elongated, tapering above from a broad base, 2–3 pinnate or pinnatifid, bearing fleshy bulblets beneath. On wet rocks, preferring limestone. P. 194.
53. COMMON BLADDER FERN
Cystopteris fragilis
Medium-sized, fronds thin, oblong-lanceolate, 2–3 pinnate or pinnatifid. On rocks and in moist woods. P. 198.
54. RUSTY WOODSIA
Woodsia Ilvensis
Small, more or less covered with rusty hairs, fronds lanceolate, once-pinnate, pinnæ pinnatifid. On exposed rocks. P. 200.
55. BLUNT-LOBED WOODSIA
Woodsia obtusa
Small, slightly downy, fronds broadly lanceolate, nearly twice-pinnate. On rocks. P. 202.
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