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