432 99. FiLicEs. 



** Capsules without an elastic ring. 

 Suborder II. OSMTJNDACEiE. 



Youn^ fronds circinate. Rachis woody. Capsules regularly 

 2-valved, stalked, in clusters at the extremity of the frond. 



Tr. VI. OSMUNBEjE. 



17. OsMTJNBA. Capsules clustered, arranged in a branched 

 spike terminating the frond. 



Suborder IH. OPHIOGLOSSACE^. 



Young fronds straight., Rachis succulent. Capsules regularly 

 2'-valved, sessile, in clusters on a separate branch of the frond. 



Tr. Vn. OPHIO GLOSSED. 



18. BoTRYCHiuM. Capsules distinct, disposed in a compound 

 spike attached to a pinnate or bipinnate frond. 



19. Ophioglossum. Capsules connate, disposed in a simple 

 distichous spike attached to an undivided frond. 



Suborder I, PolypodiacetB. Tribe I. PolypodiecB, 



1. Cetpiogeam'me R. Br. Eock-brake. 



1. C. cri^'pa (R. Br.) ; barren fronds 2 — 3-pinnate, leaflets 

 wedgeshaped or linear-oblong often bifid at the end, leaflets of 

 the fertile fronds oblong. — Achsanis Bemh., N. 103. Pteris Sm., 

 E. B. 1160. — Fertile frond nearly triangular. Veins alternate, 

 often forked and each branch ending in, a cluster having no 

 indusium but concealed by the reflexed edge of the leaflet. 

 Height 6 — 12 in. St. slender, ' very brittle.^Amongst loose 

 stones on mountains. P. VII. ' E. S. 1. 



2. Poiypo'ditjm Linn. Polypody. 



* Chistsrs at the end of a veinlet, other veiiilets knobbed at the end 

 and not reaching the edge, Mhizome without fronds at its 

 end. Ctbnoptbris Newm. 



1. P. vulgdre (L.) ; fronds deeply pinnatifid, lobes linear-ob- 

 long somewhat serrate allparallel upper ones gradually smaller. 

 — E. E. 1149. N. 111. — Rhizome brown, densely scaly, creep- 

 ing. Fronds strapshaped. Clusters lar^e, on the upper part of 

 the frond. Lateral veins of the pinnae with 4 branches. Pinuee 

 occasionally bifid at the endj sometimes deeply serrate or even 

 (P. cambriciim'ij.) doubly pinnatifid. — Shady banks, walls and 

 old trees. P. ^'III. — X. Common Polypody. E. S. I. 



