FILICES. 
391 
15. Hy.menopiiyllu.m S/n. 
1. H. tunbridgense (Sm.) ; fronds pinnate, pinnae distichous, 
segments linear undivided or bifid spinosely-serrate, involucre 
compressed spinosely serrate, rachis broadly winged. — E. B. 162. 
— Slender and delicate. Rhizoma very long, threadshaped. Pin- 
na?, rachis and involucres in the same plane. Valves of the in- 
volucre adpressed throughout the greater part of their length, 
slightly gibbous at the base. — Amongst moss in damp and shady 
places. P. VII. 
2. H. Wilsoni (Hook.) ; fronds pinnate, pinnae recurved, seg- 
ments linear undivided or bifid spinosely-serrate, involucre in- 
flated entire, rachis slightly bordered. — E. B. S. 2686. — Resem- 
bling the preceding, but the pinna? curve backwards and the in- 
volucres forwards. Valves of the involucre convex or gibbous 
throughout, touching only by their edges which are quite entire. 
— Amongst moss in damp and shady places. P. VII. 
Suborder III. Osmunclacece. Tribe VII. Os/nimdece. 
16. Osmund a Linn. 
1. 0. regalis (L.) ; fronds bipinnate, pinnules oblong nearly 
entire dilated and slightly auricled at the base, clusters panicled 
terminal. — E. B. 209. ' Newm. 96. — Fronds erect or drooping, 
1 — 8 feet high. Panicle of fruit bipinnate. — Boggy places. P. 
VII. — IX. Flowering Fern. 
Tribe VIII. Ophioylosse<e. 
^ 17. BOTRYCHIU.M SlC. 
1. B. Lunaria (Sw.) ; frond pinnate solitary, pinnae lunate or 
fanshaped notched or crenate. — £.5.318. Newm. 100. — Height 
3 — 6 in. Pinnae sometimes deeply notched, occasionally bearing 
a few thecae. Fronds usually solitary, but sometimes there are 
two on the same stalk. — Pastures. P. VI. VII. Moon-wort. 
18. Ophioglossum Linn. 
1. 0. vulgatum (L.) ; frond ovate obtuse. — E. B. 108. Newm. 
103. — Height 4 — 12 in., erect. Spike clubshaped, usually rather 
longer than the frond, sometimes very long. — Pastures V. VI. 
Adder' s-tongue. 
