SPECIES AND VARIETIES OF BRITISH FERNS. 59 



with spinulose serratures ; posterior pinnules much 

 largest ; scales ovate, pale ; caudex creeping. 



L. dilatata, Prcd. — Fronds oblong or ovate-lanceolate, 

 bi-tri-pinnate, with spinulose serratures ; scales lan- 

 ceolate ; caudex usually erect. Plate IX. fig. 2. 



tar. collina. — Pinnules ovate, blunt, bluntly mucronate- 

 serrate ; scales dark-centred. 



«^rt;-. glandulosa. — Fronds lanceolate-ovate, tall, very 

 glandular ; scales pale two-coloured, broader ; cau- 

 dex somewhat creeping. 



tar. Chanterise. — Fronds lanceolate, narrowed below, 

 and caudate at the apex ; pinnic and pinnules (the 

 latter short oblong) distant. 



'car. dmnetonim. — Fronds oblong-ovate or ovate-trian- 

 gular, dwarf, very glandular ; scales pale, two- 

 coloured, narrower. 



L. semula, Brackcnridfie. — Fronds triangular, bipinnate, 

 pinnules concave above ; scales lanceolate, laciniated. 



POLYPODIACE^ § ASPLENIE.E. 



Genus 6. ATHYRIUM, Both. 



A. Filix-fcsmina, Moth. — The only British species. Fronds 

 bipinnatc; pinnules flat, linear-oblong, lobed. PlateXI. 



