172 
E. Witsont. Wilson’s Equisetum,. Fig. 1711. 
Stem erect, simple, nearly smooth, with 8-10 strie. Teeth short, 
blunt. Mucruss, Killarney. 2-3 ft. Perenn. Aug. N.39. 8.10. 
Orper CVIII. FILICES. 
Suborder 1. PoLypoDIACEs. 
Tribe 1. PoLyPopIEA. 
Genus 1. CryproGRAMME. 
C. crispa. Rock Brake. Fig. 1712. 
Barren fronds bi-tripinnate, leaflets wedge-shaped. Fertile fronds 
linear-oblong, entire. Mountain rocks. 6-12in. May, June. FH. B.1. 
1160. 2£.B.2.1442. H.§& Arn.590. Bab. 4.419, 5.420. N. 103. 
S. F. 39. 
Genus 2. PoLyPopium. 
P. vutearE. Common Polypody. Fig, 1713. 
Fronds strap-shaped ; segments linear-lanceolate, somewhat serrated. 
Shady hedge-banks. 5-18in. May-Aug. #£.B.1.1149. #.B.2. 
1409. H.§ Arn. 581. Bab. 4.419,5.420. N.111. SF. 1. 
P. Puecorteris. Mountain Polypody. Fig. 1714. 
Fronds subpinnate ; pinne linear-lanceolate, the two lowest turned 
downwards and forwards, hairy. Moist woods and mountain rills. 
5-12in. Perenn. July-Sept. H. B. 1.2224. #.B.2.1410. H& 
Arn.581. Bab.4.419,5.421. N.115. S.F. 2. 
P. Dryorreris. Tender 3-branched Polypody. Fig. 1715, 
Fronds ternate, glabrous ; segments pinnate, pinnze pinnatifid. Shady 
rocky places. 3-12in. Perenn. June, July. £.B.1.616. £. B, 2. 
1411. H.& Arn. 582. Bab.4.420,5.421. N.123. 8. F.3. 
P. catcareum. Rigid 3-branched Polypody. Fig. 1716. 
Fronds triangular, subternate, glandular. Limestone districts. 
4-12in. Perenn. June, July. #.B.1.1525. #. B.2.1412. H.& 
Arn. 582. Bab. 4.420,5.421. N.131. S.F.4. 
P. atpestRE. Alpine Polypody. Fig. 1717. 
Fronds lanceolate, bipinnate ; pinnz linear-lanceolate, pinnatifid, with 
obtuse serrated lobes. Highlands of Scotland. 6 in. to3ft. Perenn, 
July, Aug. H.& Arn.582. Bab.5. 421. N. 200. 8. #. 49. 
Genus 3. Woopsta. 
W. Itvensis. Oblong Woodsia. Fig. 1718. 
Fronds lanceolate, chaffy beneath ; pinnz oblong. Moist mountainous 
rocks. 2-3in. Perenn. Aug. H.B.S.2616. £,B.2.1413. H.& 
Arn. 583. Bab. 4. 420,5.422. N.137. S.F. 5. | ; 
W.HYPERBOREA. Alpine Woodsia. Fig. 1719. 
Fronds linear-lanceolate, glabrous ; pinne triangular, pinnatifid. Alp- 
ine rocks. 2-3in. Perenn,. July. #.B.1. 2023. #.B. 2.1414, 
H. & Arn. 583. Bab.5.422. N.143. 8. F.6. 
Tribe 2. ASPIDIEA. 
Genus 4. LastRea. 
L. Tuetyreteris. Marsh Fern. Fig. 1720. 
Fronds lanceolate, pinnate ; pinnee linear-lanceolate, slightly downy, 
without glands. Sori submarginal. Marshy places. 1-4 ft. Perenn. 
July, Aug. #.B.1.1018. £.B. 2.1420. H.§ Arn.584. Bab. 4, 
421,5.422. N.183. SF. 7. 
