172 
E. Wilsoni. Wilson's Equisetum. Fig. 1711. 
Stem erect, simple, nearly smooth, with 8-10 striae. Teeth short, 
blunt. Mucruss, Killarney. 2-3 ft. Perenn. Aug. N. 39. S. 10. 
Order CVIII. FILICES. 
Suborder 1. Polypodiacea:. 
Tribe 1. Polypodies. 
Genus 1. Cryptogramme. 
C. crispa. Rock Brake. Fig. 1712. 
Barren fronds hi-tripinnate, leaflets wedge-shaped. Fertile fronds 
linear-oblong, entire. Mountain rocks. 6-12 in. May, June. E.BA. 
1160. E.B. 2.1442. II. Am. 590. Bab. 4. 419,5.420. A r . 103. 
S. F. 39. 
Genus 2. Polypodium. 
P. vulgare. Common Polypody. Fig. 1713. 
Fronds strap-shaped; segments linear-lanceolate, somewhat serrated. 
Shady hedge-banks. 5-18 in. May-Aug. E.B. 1.1149. E.B.2. 
1409. H.fyAm.5 81. Bab. 4. 419, 5. 420. JV. 111. S.F.l. 
P. Phegopteris. Mountain Polypody. Fig. 1714. 
Fronds subpinnate; pinnae linear-lanceolate, the two lowest turned 
downwards and forwards, hairy. Moist woods and mountain rills. 
5-12 in. Perenn. Julv-Sept. E. B. 1.2224. E. B. 2. 1410. II. 
Am. 581. Bab. 4. 419, 5. 421. N. 115. S.F.2. 
P. Dryopteris. Tender 3-branched Polypody. Fig. 1715. 
Fronds ternate, glabrous ; segments pinnate, pinnae pinnatifid. Shady 
rocky places. 3-12 in. Perenn. June, July. i?. U. 1. 616. E.B.2. 
1411. H. Am. 582. Bab. 4.420,5.421. N. 123. S.F.3. 
P. calcareum. Rigid 3-branched Polypody. Fig. 1716. 
Fronds triangular, subternate, glandular. Limestone districts. 
4-12 in. Perenn. June, July. E.BA. 1525. E. B■ 2. 1412. H. 
Am. 582. Bab. 4.420,5.421. N. 131. S.F.4. 
P. alpestre. Alpine Polypody. Fig. 1717. 
Fronds lanceolate, bipinnate; pinnae linear-lanceolate, pinnatifid, with 
obtuse serrated lobes. Highlands of Scotland. 6 in. to 3 ft. Perenn. 
July, Aug. II. fy Am. 582. Bab. 5. 421. N. 200. S. F. 49. 
Genus 3. Woodsia. 
W. Ilvensis. Oblong Woodsia. Fig. 1718. 
Fronds lanceolate, chaffy beneath ; pinnae oblong. Moist mountainous 
rocks. 2-3 in. Perenn. Aug. E.B.S. 2616. E.B. 2.1413. H. fy 
Am. 583. Bab. 4. 420, 5. 422. N. 13 7. S.F.5. 
W. hyperborea. Alpine Woodsia. Fig. 1719. 
Fronds linear-lanceolate, glabrous ; pinnae triangular, pinnatifid. Alp¬ 
ine rocks. 2-3 in. Perenn. July. E.B. 1. 2023. E.B. 2. 1414. 
H. Am. 583. Bab. 5.422. N. 143. S. F. 6. 
Tribe 2. Aspidieye. 
Genus 4. Lastrea. 
L. Thelypteris. Marsh Fern. Fig. 1720. 
Fronds lanceolate, pinnate; pinnae linear-lanceolate, slightly downy, 
without glands. Sori submarginal. Marshy places. 1-4 ft. Perenn. 
July, Aug. E.BA. 1018. E. B. 2. 1420. II. ^ Am. 584. Bab. 4. 
421, 5.422. N. 183. S.F.7. 
