SPECIES AND VARIETIES OF BRITISH FERNS. 59 
with spinulose serratures ; posterior pinnules much 
largest ; scales ovate, pale ; caudex creeping. 
6. L. dilatata, Presl, — Fronds oblong or ovate-lanceolate, 
bi-tri-pinnate, with spinulose serratures ; scales lan- 
ceolate ; caudex usually erect. Plate IX. fig. 2. 
mr, coUina. — Pinnules ovate, blunt, bluntly mucronate- 
serrate ; scales dark-centred, 
glandulosa. — Fronds lanceolate-ovate, tall, very 
glandular ; scales pale two-coloured, broader ; cau- 
dex somewhat creeping. 
mr, ChanterisB. — Fronds lanceolate, narrowed below, 
and caudate at the apex ; pinnae and pinnules (the 
latter short oblong) distant. 
mr. dumetorum. — Fronds oblong-ovate or ovate-trian- 
gular, dwarf, very glandular ; scales pale, two- 
coloured, narrower. 
7. L. aemula, Brackenridge. — Fronds triangular, bipinnate, 
pinnules concave above ; scales lanceolate, laciniated. 
POLYPODIACE^ § ASPLENIEiE. 
Genus 6. ATHYRIUM, Both. 
1. A. FUix-foemina, The only British species. Fronds 
bipinnate ; pinnules flat, linear-oblong, lobed. Plate XL 
