









THE BRITISH FERNS. 
THE FORKED SPLEENWORT, 
ASPLENIUM SEPTENTRIONALE. 
A. fronds linear, simple, or two-three-cleft with linear divi- 
sions; segments alternate, ascending, elongate and rachiform, with 
a few deep narrow distant teeth ; sori few, elongato, often parallel ; 
indusium entire. [Plate LXXXI.] 
ASPLENIUM SEPTENTRIONALE, Hoffmann, Deutschl. Fl. ii. 12 (1795). Hull, 
Brit. Fl. 241 (1799). Smith, Eng. Bot. xv. t. 1017 ; Id., Eng. Fl. 2 ed. iv. 
295. Gray, Nat. Arr. Brit. Pl. ii. 14. Hooker de Arnott, Brit. Fl. 7 ed. 
588. Babington, Man. Brit. Bot. 4 ed. 426. Deakin, Florigr. Brit. iv. 74, 
fig. 1595. Newman, Hist. Brit. Ferns, 2 ed. 269. Sowerby, Ferns of Great 
Brit. 58, t. 34. Moore, Handb. Brit. Ferns, 3 ed. 193; Id., Ferns of 
Great Britain Nature Printed, t. 41 O; Id., Ind. Fil. 166. Hooker, Fl. 
Lond. v. t. 162. Lowe, Nat. Hist. Ferns, v. t. 8 A. Bentham, Handb. Brit. 
Fl. 633. Schkuhr, Krypt. Gew. 62, t. 65. Willdenow, Sp. Plant. v. 307. 
Svensk Bot. t. 534. . Sprengel, Syst. Veg. iv. 81. Prest, Tent. Pterid. 106, 
t. 3, fig. 8. Koch, Syn. 2 ed. 983. Sturm, Fl. (Farrn.) t. 4. Fries, Sum. 
Veg. 82. Ledebour, Fl. Ross. iv. 521. Mettenius, Fil. Hort. Bot. Lips. 76, 
t. 13, fig. 21; 7d., Asplen. 141. Nyman, Syllog. Fl. Eur. 433. 
ASPLENIUM BIFURCUM, Opiz, Flora, 1823, 667. 
ASPLENIUM FURCATUM, Jacquemont MS. Hb. Mus. Par. 
ACROSTICHUM SEPTENTRIONALE, Linnœus, Sp. Plant. 1524. Bolton, Fil. Brit. 
12. t. 8, ZU. Dan. t. 60. 
ACROSTICHUM LACINIATUM, Gilibert, Exerc. Phytol. ii. 555. 
ACROPTERIS SEPTENTRIONALIS, Link, Hort. Reg. Berol. ii. 56 ; Id. Fil. Sp. 80. 
Fee, Gen. Fil. 77, t. 6 A, fig. 1. 
AMESIUM SEPTENTRIONALE, Newman, Hist. Brit. Ferns, 2 ed. 10; 3 ed. 265 ; 
Id., Phytol. 1851, App. vii. 
BLECHNUM SEPTENTRIONALE, Wallroth, Bluff de Finger. Comp. Fl. Germ. iii. 24. 
BELVISIA SEPTENTRIONALIS, Mirbel, Hist. Nat. Veg. iii. 473. 
PTERIS SEPTENTRIONALIS, Smith, Mem. Acad. Turin, v. 412, in obs. 
SCOLOPENDRIUM SEPTENTRIONALE, Roth, Fl. Germ. iii. 49. 

Caudex short, thick, often tufted, and forming large dense masses 
of scaly crowns. Scales small, narrow, lanceolate, dark brown, 
striate-reticulate. Fibres numerous, wiry, branched. 
Vernation circinate. 
Stipes terminal, adherent to the caudex, dark brown-purple at the 
base, green above, as long as or longer than the frond. 

