16 CRYPTOGAMIA FILICES. 



4. CYSTEA. 



1. C. fragitts, frond a span high, oblong, lanceolate, bipinnate ; 

 leaves lanceolate, pinnatifid, the segments ovate, cut or serrated ; 

 midribs bordered ; masses crowded ; cover irregularly torn. 



Hob. On wet shady rocks and old walls, rare. u In the 

 Pigeon's Cove, near the Needle-eye/' Thomp. Near 

 Mains, Berwickshire, llev. A. Baird. July. 7/ 



5. ASPLENIUM. 



1. A. Trichomanes, frond linear, pinnate, with a dark brown 

 polished stalk, keeled underneath ; leaves small, roundish, ovate, 

 obtuse, crenate. 



Hah. In the crevices of shaded rocks, frequent, growing in 

 tufts generally about a span high. Banks of the Eye 

 near Netherbyres ; and in the ravine above Burnmouth, 

 llev. A. Baird. Rocks above Kyloe, N. D. On rocks 

 by the water below the Pease Bridge, &c. May 

 Dec. If. 



2. A. marinum, frond lanceolate, pinnate, with a smooth stalk 

 dark brown towards the root ; leaves ovate-oblong, serrated, un- 

 equal, and wedge-shaped at the base. 



Hab. In crevices of rocks by the sea-side, not common. 

 Rocky cliffs from the sandy -beds northwards, most abun- 

 dant in the Pigeon's Cove, Thomp. Near Eyemouth, 

 Rev. A. Baird. June- Oct. If. 



3. A. Adiantum nigrum, frond somewhat triangular, bipinnate ; 

 with a smooth stalk, dark towards the base ; leaves stalked, trian- 

 gular, with obtuse cut and serrated leaflets or segments. 



Hab. In crevices of rocks and about the roots of trees in 

 deans, frequent. June Oct. I/. 



4. A* Ruta muraria, frond alternately twice compound, the 

 leaves rhomboid wedge-shaped, notched at the extremity, 



Hab. Fissures of rocks in tufts about 3 inches high. Spin- 

 dlestone Crags, N. Mr R, Embleton. Has not been 



