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Tribe 4. Ap1ANTEX.—Genus 12. BLecHNUM, 
B. poreate. Lard Fern. Fig. 1751. 
Fertile fronds pinnate; pinne linear, acute. Barren fronds pec- 
tinate, pinnatifid ; pinnee broadly linear. Woods. 6 n.—2 ft. Perenn. 
July. £.B.1.1159. #. B.2.1441. H, & Arn. 590. Bab. 4.427, 
5.429. N17. 8. F.37. 
Genus 13. Preris. 
P. aquitinA. Common Brake. Fig. 1752. 
Fronds tripartite; branches bipinnate; segments oblong, obtuse. 
Heathsand moors. 6im.-Sft. Perenn. July. £.B.1.1679. #. B. 2. 
1442. H.§ Arn. 590. Bab. 4.427,5.429. N.23. SF. 38. 
Genus 14, ADIANTUM. 
A. Capitius-VENERIS. Maiden-hair. Fig. 1753. 
Frond irregular ; pinnules roundish-wedge-shaped, lobed. Sea-caves 
and rocks. 3-12in. Perenn. May-Sept. #.B.1.1564. #. B. 2. 
1444, H.& Arn.591. Bab, 4,428,5.429, N.1, S.F. 40. 
Tribe 5. HymenorPHyLLe#.—Genus 15. TRichoManes. 
T. rapicans. Bristle Fern. Fig. 1754. 
Fronds 3-4 times pinnatifid, glabrous. Involucres solitary, in the 
axils of the upper segments. Dripping rocks, Ireland. 3-12 in. 
Perenn. Sept., Oct. #.B.1.1417. H,B.2.1445. H.& Arn. 591. 
Bab, 4. 428, 5.429. N.283. S.F.41. 
Genus 16. HymMENnorpHyLivuoM. 
H. Tunsripcense. Filmy Fern. Fig. 1755. 
Fronds pinnate, membranaceous; pinne distichous. Involucre 
solitary, compressed, spimosely serrate. Damp moss. 1—4in. Perenn. 
Aug. £#.B.1.162. £.B.2.1446. H.& Arn. 592. Bab. 4. 428, 
5.430. N.297. S.F. 42. 
H. Witsonr. Scottish Filmy Fern. Fig. 1756, 
Fronds pinnate; pinne recurved. Involucre stalked, inflated, entire. 
Damp moss. 1-4in. Perenn. Aug. FE. B.S. 2686. 4H. B. 2.1447. 
H. & Arn. 592. Bab. 4.428, 5.430. N.301. S.F. 43. 
Suborder 2. OSMUNDACE®. 
Tribe 6. OsmunpDEa&.—Genus 17. OsmunpDa. 
O. reEGALIS. Flowering Fern. Fig. 1757. 
Fronds bipinnate; pinnules oblong. Fructification in panicles, ter- 
minal, Margins of rivers and lakes. I-l1ft. #.B.1.209. #. B. 2. 
1448. H.§ Arn. 593. Bab. 4.429, 5.430. N. 307. S.F. 44. 
Suborder 3. OrpHioGLOssacEZz. 
Tribe 7. OpH1ocGLosse#.—Genus 18. Botrycuium. 
B. Lunarta. Moonwort. Fig. 1758. 
Frond pinnate ; pinnee fan-shaped, notched. Commons and pastures. 
3-6in. Perenn. Aug. #.6.1.318. #.B. 2.1449. H.& Arn. 
594, Bab. 4.429,5.430. N.313. S.F.45. 
Genus 19. OpHroGLossuM. 
O. vutGatum. Common Adder’ s-tongue. Fig. 1759. 
Frond ovate, blunt. Spike club-shaped. Meadows. 2-12in. Perenn. 
May, June. #.B.1.108. EF. B.2.1450. H.§ Arn.593. Bad.4. 
429, 5.430. N.325. S. F.46. 
QO. Lusiranicum. Lesser Adder’ s-tongue. Fig. 1760. 
Frond linear-lanceolate. Guernsey. 1—2in, Perenn. Jan, Bad. 4. 
429,5.431. N.331. S.F. 47, 
