












THE BRITISH FERNS. 
THE MOUNTAIN PARSLEY FERN,or ROCK BRAKES. 
ALLOSORUS CRISPUS. , 
A. fronds of two kinds, ovate-deltoid, bi-tri-pinnate; ultimate 
divisions of the sterile fronds obovate wedge-shaped, often bifid ; 
those of the taller fertile fronds linear or oblong, their margins 
recurved over the roundish sori. [Plate XIII.] 
ALLOSORUS CRISPUS, Bernhardi, Schrad. N. Journ. Bot. 1806, 1., pt. i. 5, 86. 
Babington, Man. Brit. Bot. 4 ed. 410. Deakin, Florigr. Brit. iv. 47, fig. 
1585. Newman, Hist. Brit. Ferns, 3 ed. 35. Moore, Handb. Brit. Fons, 
3 ed. 70; Id., Ferns of Gt. Brit. and Ireland, Nature Printed, t. 8 (excl. 
syn. Ti and Gmelin); Zd., Ind. Fil. 44. Sowerby, Ferns of Gt. Brit. 
69, t. 99. Sprengel, Syst. Veg. iv. 65. Presl, Tent. Pier. 152. Koch, 
Synops. 2 ed. 985. . Bentham, Handb. Brit. Fl. 627. Lowe, Nat. Hist. 
Ferns, ii. t. 34. Nyman, Syll. Fl. Europ. 434. 
OSMUNDA CRISPA, Linneus, Sp. Plant. 1522. Bolton, Fil. Brit. 10, t. 7. Hudson, 
Fl. Ang. 450. Flora Danica, t. 496. Savigny, Lam. Enc. Bot. iv. 657. 
OSMUNDA RUPESTRIS, Salisbury, Prod. 402. 
PTERIS CRISPA, Linneus MS. Smith, Fl. Brit. 1137; Id., Eng. Bot. xvii. 
t. 1160 ; Id., Eng. Fl. 2 ed. iv. 306. Schkuhr, e Ge 90, t. 98. Will- 
denow, ES Plant. v. 395 (excl. syn. Gmelin). 
PTERIS TENUIFOLIA, Lamarck, Fl. Franç. i. 13. 
ACROSTICHUM CRISPUM, Villars, Hist. des Pl. Dauph. iii. 838. 
ONOCLEA CRISPA, Hoffmann, Deutschl. Fl. ii. 11. 
CRYPTOGRAMMA CRISPA, R. Brown, App. Frankl. Narr. of Journ. to Polar Sea, 
754, 767. Hooker, Gen. Fil. t. 115 B (sori too long); Id., Sp. Fil. ii. 128 
Ma form, E syn. Gmelin, Turczaninow, and UNUM Hooker 
& Arnott, Brit. Fl. 7 ed. 590. Mackay, Fl. Hib. 343. 
PHOROLOBUS ORISPUS, Desvaux, Ann. Soc. Linn. de Paris, vi. 291. Fee, Gen. 
Ih, MEM ist 1D), 
BLECHNUM CRISPUM, Hartmann, Fl. Scand. 3 ed. 255. 
RIEDLEA CRISPA, Mirbel. 
STEGANIA ONOCLEOIDES, Gray, Nat. Arr. Brit. Pl. ii. 16. 
STEGANIA CRISPA, R. Brown, Prod. Fi. Nov. Holl. 152, in obs. 
STRUTHIOPTERIS ORISPA, Wallroth, Bluff et Fingerhuth, Comp. Fl. Germ. iii. 97. 
Caudex small, short, tufted, erect or decumbent, scaly. Scales 
membranous, pale brown, subulate. Fibres numerous, branched, 
dark brown, wiry, and slightly covered with small hair-like scales. 
Vernation circinate. 
Stipes as long as, or usually longer than the frond, pale green, 
slender, smooth, with a few scattered scales near the base; lateral 
and adherent to the caudex. Rachis smooth. 

