SCOLOPENDRIUM. PTERIS. 427 



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. 



10. ScOLOPENDRiUM Sm. Hart's-tongue. 



1. S. vulgare (Sym.); frond oblong strapshaped smooth sim- 

 ple with a cordate base, stipes shaggy. — E. B. 1150. Phyllitis 

 JV. 289. — Fronds 1 — 2 feet long, acute, often crisped and mul- 

 tifid.— Damp shady places. P. VII. VIII. 



11. Ceterach Willd. 



1. C. O^cmaram (Willd.) ; fronds pinnatifid covered beneath 

 with dense scales, pinnffi alternate or opposite obtuse sessile. — • 

 Notolepum N. 293. Scolopendrium Sm., E. B. 1244.— Fronds 

 3 — 6 in. long, green and smooth above, wholly covered by very 

 many scales beneath, amongst which the thecse are almost hidden. 

 —Old walls and rocks. P. IV.— X. 



12. Gymnogramma Desv. 



[1. G. leptophylla (Desv.); fronds pinnate or bipinnate gla- 

 brous, pinnules wedgeshaped deeply lobed. — N. ed. 3. 11. S. 48. 

 — Frond 1 — 4 in. high. Stipes purple. Pinnse and pinnules 

 alternate. — Banks. Jersey. A. IV.] 



Tribe IV. Adiantea. 



13. Blechnum Linn. Hard-fern. 



1. B. boreale (Sw.); barren fronds pectinate-pinnatifid with 

 broadly-linear rather obtuse pinnse, fertile frond pinnate with 

 linear acute pinnse. — E. B. 1 159. Lomaria Spicant N. 89. — Each 

 lateral vein of the fertile pinnse extends half-way to the edge, then 

 turns at right angles and proceeds up the pinna until it reaches 

 the next vein. Capsules attached in a continuous row to the 

 longitudinal portions of the combined lateral veins. Rather a 

 Blechnum than Lomaria. — Stony and heathy places. P. VII. 



14. Pteris Linn. Brakes. 



1. P . aquilina (1j.) ; fronds tripartite, branches bipinnate, pin- 

 nules linear-lanceolate the lower ones usually pinnatifid, seg- 

 ments oblong obtuse. — E.B.X&IQ. N. 93. Eupteris Nev/m. — 

 Fronds annual, 1 — 5 feet high, very much divided, with spread- 

 ing branches. Capsules attached to the marginal vein, lying 



