408 
94. riLiCES. 
Siiboider IV. OPIIIOGLOSSACEiE. 
Vernation straight. Kachis succulent. Thecas reguharly 2- 
valved, sessile, in clusters on a sejiarate hranch of the frond. 
Tr. VII. OPHIOGLOSSEjE. 
17 . IIoTRYCHiUM. Theca; distinct, disposed in a compound 
s])ike attached to a pinnate or hipinnate frond. 
18. Oi’HioGLOssuM. Theca; connate, disposed in a simple 
distichous sj)ike attached to an undivided frond. 
Suborder I. Polypodiacea. Tribe I. Polypodies. 
1. Allosorus Hera/i. 
1. cmp/s (Bernh.) ; haiTen fronds 2 — 3-pinnate : leaflets 
wedgeshaped or linear-ohlong often hifid at the end, leaflets of 
the fertile fronds ohlong. — N. 103. Pteris Sm., E. B. 1160. 
Cnjptogramma R. Br., Hook. — Fertile frond nearly triangular. 
Veins altcraate, often forked and each hranch terminating in a 
sorus which is totally without an indusium hut concealed hy the 
reflexed margins of the leaflet. Height 6 — 12 in. St. slender, 
veiy brittle. — Stony places on mountains, occasionally on old 
walls. P. VII. Rock Brakes. 
2 . Polypodium Linn. 
1. P. vulgare (L.) ; fronds deejfly ])innatifid : lobes linear- 
ohlong somewhat serrated all j)arallel upjier ones gradually 
smaller. — E.B. 1149. iV. 111. — Rhizoma brown, densely scaly, 
crec])ing. Fronds strapshaped. Sori large, on the upper part 
of the frond. Lateral veins of the pinnae with 4 branches of 
which the lowest terminates in a soms. Pinna; occasionally hifid 
at the end, sometimes deejily serrate or even (P. cambricum L.) 
doubly jiinnatifid. — On shady banks, walls and old trees. P.VllI. 
• — X. Common, Polypody. 
2. P.? Phegopteris (L.) ■, fronds pinnate : pinna; linear-lanceo- 
late united at the base pinnatifid with linear-ohlong blunt lobes, 
lowest pair of jrinns turned downwards and forwards the rest 
upwards, sori marginal. — E. B. 2224. N. 115. — Rhizoma nearly 
black, wiry, slightly sc,aly, creeping e.xtensively. Fronds trian- 
gular. Pinnse very acute, jiointing upwards, rather hairy, con- 
nected by their whole width with the rachis ; the lowest pair 
quite distinct, with a minute stalk, standing forw'ards and point- 
ing from the others. Lateral veins of the lobes simjile, extend- 
ing to the margin. — Roth [FI. Germ. hi. 73.) found an evanescent 
