POLYPODIUM, § PHEGOPTERIS. 251 



tifid at the base and there sometimes again pinnate, segments 

 oval-ol)long entire or the inferior ones pinnatifido-serrate, 

 veiiilets mostly simple bearing the sori towards the apex near 

 the margin, sori often confluent. — G. F. Hoffni. Fl. Germ, 

 part ii. i795. in Add. Moore, Brit. Ferns, Nat. Print, t. 6. 

 Hook. Gard. Ferns, t. 5. P. calcareum, Sm. Brit. Ft. p. 1)7 

 (1S04). Enffl. Bat. t. 1525. Willd. Sp. PL v. p. 210. 

 Hook, et Arn. Brit. Fl. ed. 8. p. 581. Phegopteris, Fee. 

 Metten. Phegopt. p. 9. Polypod. Dryopteris, Dicks, t. IG, 

 and Bolt. Brit. Ferns, p. 53. t. 1 {and of American authors, 

 accordinr/ to Mr. Moore). Benth. Handb. of Brit. Ft. p. 626. 

 — Var. /5. Wahl. Fl. Suec. ii. p. 668. 



ITab. Limestone debris, northern and western parts of England, /. E. Smifh. 

 Stated to be a native of Germany and North America; but this species is often 

 confounded with P. Dryopteris, and, by myself as well as others, is considered as 

 doubtfully distinct. — See, for remarks on the two species, our ' British Ferns,' 

 under plate 3. 



184. P. (Phegopteris) alpestre, Hoppe; glabrous, caudex 

 oblique, stipites 4-6 inches long rather stout scaly below, 

 fronds membranaceous flaccid \h-2 feet long oblong-lanceo- 

 late acuminate bipinnate, primary pinnae patent or erecto- 

 patent 3-4 inches long |-1 inch broad from a broad sessile 

 base gradually acuminate, pinnules ^ a^n inch long horizon- 

 tally patent oblong-ovate subacute sessile more or less pin- 

 natifid at the margin, segments short ovate sharply inciso- 

 serrate, veins twice or thrice forked, sori scattered dorsal 

 upon the veinlets. — Hoppe, in Sprengel. Sotuerby, Ferns of 

 Gt. Britain, p. 84. t. 49. Hook, et Arn. Brit. FL ed. 8. p. 

 581. Hook. Brit. Ferns, t. 6. Phegoptans, Metten. P/ier/opt. 

 p. 10. Aspidium, Siv. Syn. FiL /?. 42 et 59. tVilld. Sp. PL 

 V. p. 280. Schk. FiL p. 58. t. 60. A. Rhceticum, Siv. Sijn. 

 FiL p. 59. IFilld. Sp. FL v. /;. 280 {e.vcL Syn. Linn.). Po- 

 lypod., Villars. Athyrium, Koth. — ^, flexile ; stipes scarcely 

 any, pinnae short ovato-lanceolate spreading or deflexed, 

 pinnules distant. Moore, Br. Ferns, Nat. Print, t. 6. Poly- 

 pod. flexile, Moore. 



Ilab. Rare in the highland mountains of Scotland ; more frequent in Nor- 

 way, Lapland, Russia, Germany, and on the Alps in tiic south. In North-west 

 America, Dr. Lyall. — Habit of Aspleuium FiUx-fijemina, but a true Polypudium, 

 § I'heyopleris. 



185. P. (Phegopteris) sessilifolium, Hook. ; caudex?, stipes?, 

 frond 2 feet (and more) long a foot broad ovate acuminate 

 firm-membranaceous bipinnate, pinnpe sessile opposite or 



