16 11. Pteris. 1. FILICES. Plend.cn 



X. 10. STEGANIA. R. Brown. Slonefern. 



Son linear, contiguous ; capsules at length covering the 

 back of the contracted frond, or of the leaflets; involucra 

 marginal, scariose, opening inwards, 



Stegania onocleoides. Onoclea stonefern. 



Barren fronds bipinnate ; leaflets pinnatifid ; loles obo- 

 vate, cuneate, inciso-dentate at the tip : fertile fronds bi- 

 pinnate, lower ones tripinnate ; leaflets linear oblong, ra- 

 ther obtuse, not in the least notched, narrower at the base. 



Filix fcemina q. Adiantum album crispumAlpinum Schwenckf. Rail 

 Syn. 126,9; 



Osmunda crispa, Lin. S. P. 1512. 



Pteris crispa, With. Bot. Ar. 764. 



Onoclea crispa, Hojf. Germ. 2, 11. 



Stegania onocleoides. Yule Ed. Enc. Fit. 



Osmunda rupestris, Salisb. Prod. 402. 



Parsley fern. Stone brakes. 



Stone walls and rocks ; perennial ; July. 



Root hhvous; frond a foot high, long stalked, smooth, 

 pale green; leaflets petiolate, barren leaflets wedgeshape, rib- 

 bed, flat, cut at the tip ; fruitful leaflets, on a distinct frond, 

 elliptic, convex, not notched ; involucra broad, turgid, cre- 

 nate. 



&. crispa. Leaves curled. 



G. PTERiDEiE. Involucra marginal, scariose, arising 

 from the inflected upper membrane of the frond, opening 

 inwards. 



XI. 11. PTERIS. Theophrastus. Brakes. 



Sori linear, marginal. 



Pteris fcemina. Female Irakes. 



Frond three parted; branches bipinnate; leaflets \me2ir, 

 lanceolate, the upper ones whole, the lower pinnatifid ; 

 lobes oblong, obtuse. 



Filix fcemina. Rail Syn. 124; Ger. em. 1128. 

 F. fcemina vulgaris, Park. 1037. 

 Pteris aquilina, Lin. S. P. 1533. 

 P. borealis, Salisb. Prod. 402. 

 Common brakes, Female fern. 



Heaths, woods, and poor pastures ; perennial ; July. 



Root long, fusiform ; fronds 3 feet high, spreading, 

 smooth ; leaflets opposite ; lobes alternate, sessile, lanceolate, 

 not notched; sori on the margin of the lobes; involucra 

 joined together, compressed, crenulate, brown. 



