442 FILICES. 



catifsl. th»* mfir.'in* stron.'lv r^volute in fruit: r»mt ra-)*tly faked, bearing the 

 •r'.wiied fruit-dots near the middle. (Polypo Hum Thetypl 



Hir-hes. emnxm. Aqe m we Long '; the fruit-dots soon cover- 



ing the whole contracted lower rar&ee ef Hie pinnae. 



'2. D. Noveboracensis, Gray. 



Frond pinnate, ohl oner-lanceolate in outline, taperinz below from the iow«r 

 pinr.p being and bent downwards; idly »LlcLg 



*"M: mostly dmplp veins, bearing mattered fruit dott- near the ic-ir^in. 

 and n.oi-t EhicketB, common, July. Frond palegreen. 



•• Fronds verging to tp&inate, viz: ipinnate, the pinnults pinnalif.d. 



3. D. intermedia, Gray. 



F-rcr-d ovate-oMone in outline, 1 to 2 feet Ion?, smooth, britrlt pr< en : pinnt >i 

 r. obtuse horizontal, crowded, the !o»cr deeply v.innatifid into liaear- 

 ohlong obtuse lobes which are fid cr 



luri^ed : ft wiirdeti sparse: mdurhtm friiiL-eJ with stalked glandi at its i. . 



Very commc - . . Juijr. 



4. D. ceistata, Gray. 



frond Hnear-ol I r ^ in out- line, \}^ to 2 1 < in- h^s lone, very long-f talked ; pxxro- 

 t trianeular-obl ng. from a somewhat heart-shaped base, acute, mesi • 



t-Tnate. deeply r.inuatirid : v-nrndes 8 to 13 pairs, oblong, very cbtu?«. fine • 

 rr»te or cut-toothed ; fruit dots as near the midr.b as the margin, large often cl2- 

 8'^ent. 



gw&mpa, tc, common. July. Yiiri^D'e. 



5. I>. MARGIXALE. 



Frrr.d 2-j inr ate. cv:t ■ -< I U rr in outline. 1 io2 fe*t lor?: fiivr.rv opro^ite. lsnre- 

 r'.>'c frcni a 1 ro: d a'lrest Fertile law; pimtJrs cblqiigr, obtuse. \j iivh cr u < rs 

 if>r :r . rrowd< d. ol Lnsely, a i\.i . h r ieuous, i.ear the margiii . 



Wiv'u •;'». m Firinnlb. 



Etxkv hilhides and ravines in moist woods. Ttry common. July. 



Sub-order II. OSMUXDIXE.E. 



Sporar;nia variously collected, destitute of any proper 

 ring, cellular-reticulated, opening lengthwise bj a regular 

 .lit. 



12. LYGOPIUM, Swarts. Climbing Fern. 



Gr. l«godet, Sexi',-. 



Fronds twining or climbing, bearing stalked and variously 

 |ol ed divisions iff pairs, with free veins, fruit-be iring on 

 teperate contracted divisions or spike-like lobes, one side of 

 which is covered with seale-likc hooded indasia. imbricated in 

 it ranks, fixed by its lower edge, each inclosing a single spo- 

 rangium, or rarely a pair.- 



L. PALM AT A, Swarte. Faimaic Climhing Fern. 



Terr smooth ;'ffo2fcs *l<rdrr. Eesflf nrd twining, 1 to 3 feet Imp. from slendet 

 rnnninsr root-stocks: ; t« short Hlttrrafe branches or petioles deeply 2-forked. each 

 $>rk teaxine a round heart shaped r.a'matoly 5 to 7-loUd st«-ri> iror.dk-t; /Mh 

 Jr-mdlrtf above, all contracted and several times forking, forming a ccmfoutd^ei- 

 oinRl p>ini>'le. 



S£uu.led.mohr£ banks, Jvdj. . 



