Ord. I. Tribe I. 
FILICES POLYPODIACEvE. 
887 
14592 Frond somew. bipinn. : pinnules decurrent ellipt. pinnatifid serrul. spiny, Rachis smooth. Nerves flexuose 
14593 Fronds bipinnate : pinnules oblong distinct inciso-pinnatifid ; segments mucronato-serrate, Stalk chaffy 
14594 Fronds bipinnate : pinnse pinnated bipinnatifid below ; pinnules lane, blunt. Segments ovate toothletted 
14595 Fronds 3-pinnate : pinnules oblong blunt hairy above, toothed, Stalk and rachis bristly chaffy 
14596 Fronds pinnate : pinnae lane, hairy on each side pinnatifid ; segm. oblong blunt entire, lowest nearly equal 
14597 Fronds pinn. : pinnae altern. subsess. subserr. ciliat. auric, at base on upp. edge, Upp. pinna? bear, sori. Stalk 
14598 Fronds bipinnate : pinnules lin. pinnatifid cut ; segm. mucronate serrate at end, Stalk chaffy [chaffy 
14599 Fronds bipinn. : pinnules lin. lane, cut serr. Serrat. 2 or 3 toothed : those at end most ac. Sori obi. lunate 
14600 Frond lanceolate pinnate : pinns cordate pinnatifid hairy on each side. Lobes rounded repand 
14691 Fronds bipinnatifid : pinnae oblong blunt ; lower repand, upper entire 
14602 Fronds bipinnate : pinnules lanceolate serrate sharpish ; dipper confluent. Stalk smooth. Stem arboreous 
14603 Frond tripinnatifid lobed smooth : segments linear entire, Stalk winged. Columella included 
14604 Frond alternately bipinnatifid : segments and invol. serrated, Sori solitary axillary 
OSMUNBACEjE. 
14605 The only species 
14606 Fronds pinnat. : ster. bipinnatif. ; segm. ov. obi. obt. entire. Stalk woolly. Fertile fronds bipinnate woolly 
14607 Frond bipinnate bearing the spike at end : pinnules cordate-lanceolate smooth 
14608 Fronds bipinnatifid rusty with down contracted and fertile at the end 
14609 Fronds bipinnatifid entire smooth interrupted in the middle by 3 pair of fertile pinnated racemes 
14610 Fronds bipinn. : pinnules lane, sharply serrat. cune. at base ; all altern. A fert. bipinn. panic, at end of frond 
14611 Stem flexuose round. Fronds conjugate pinnate. Leaflets bearing spikes on each edge 
14612 Stem flexuo.se climbing, Fronds conjugate 3-4-lobed palmate. Lobes lanceolate acute entire 
14613 Stem flexuose climbing. Fronds conjugate cord. 5-lobed palmate. Lobes lane. ent. obt. obscurely sinuated 
14614 Frond bipinnatifid hirsute : segments cuneate lined blunt and serrated at end 
14615 Frond 3-pinnatifid triangular : segm. ovate acute toothletted at end, beneath and the rachis downy 
OPHIOGLOSSEjE. 
14616 Scape with a simple frond above, Frond pinnate : pinns lunate entire 
14617 Scape none. Fronds radical 3-parted bipinnate : pinnules lunate crenate 
14618 Scape with a simple frond at bottom, Frond 3-parted bipinnatifid : segm. linear 2.parted 2-toothed at end 
14619 Scape frondosein midd. Frond subtern. 3-parted bipinnatifid, Leaflets cutpiiinatif. Segm. obtuse 3-toothed 
14620 Scape with a simple frond at bottom. Frond mostly bitern. Leaflets obi. lane, serrul. unequally cord, at base 
and Miscellaneous Particulars. 
2203. Hymenophyllum. From tl^'/jv, a membrane, and (pvXXov, a leaf, in allusion to the tenuity of the foliage. 
This and the last are the most elegant of all ferns ; they generally grow in damp shady places among moss, 
and have hitherto refused cultivation under any plan which has been devised. 
2204. Todea. Named after Tode, an experienced mycologist, author of Fungi Mecklenburgensis. Mr. Brown 
unites this genus to Osmunda, but Kaulfuss keeps them distinct. 
2205. Osmunda. A word said to be of northern origin, and to have received its name on account of its 
potential qualities in medicine. Osmunder was one of the names of Thor, a Celtic divinity, and mund, in 
Anglo-Saxon, is expressive of force or power. These are noble species of hardy ferns. O. regalis is the finest 
of all our native species. 
2206. Lygodium. From Xvyo^, a band. The species are elegant twining plants, which bind together the 
grass or small shrubs near which they chance to grow. L. palmatum, although a North American plant, 
must have the protection of a good frame. 
2207. Anemia. From a»i£/^&ji', naked ; in allusion to the naked spikes of inflorescence ; whence some authors 
write the word Aneimia. 
2208. Botrychium. Derived from 0or^v;, a buncn, on account of the bunch-like form of its fructification. 
Botrychium virginicum is the largest of the American kinds, and is called the rattle-snake fern, from the 
circumstance of its generally growing where these venomous reptiles are usually found. 
3 L 4 
