440 vrticts. 



3. A. trichomanes, L. Common Ytnck Spfeetitoort. 



Frcvdr in denee sptmdin* tufts, r? to S inehps hfph, linear in nntlioe. oinr.ate; 

 fivvfT numerous, mnndlsh-oblone or oral, l^ inch lnn.^ ( nneqn il-Md"d, ohMo/.i-lr 

 wedire-trnncafc at the hnse. attach: d by a narrow point; the thread like stalk aai 

 ntrhi.i purple-brown and shining. 

 Rocky op*n wood?, common*. Aug. 



4. A: kbeneum, Ait. Ebong SjJrcnwort. 



Frrnrfx upright S to IS inches high, pinnate. l»nfte-Um»*r in oatlhte : p-'nna: % 

 to 1 inch Ion?, num rous, lanceolate, or the lower '■blontr. slightly mythc-ehADftd, 

 finely serrate, fcsm!,.. the diluted haw Bnrieled on the unner or both iidei trf tt» 

 •lornrafod midrib; stalk and rachia blackish-purple and shining. 



Itocky open woods, common. Aug. 



• • • Frond lijv'nnate. 



5; A: montanum, TTilld. Mountain Sjilecnwort.' 



rrtmdt 3 to 5 inches hieh. bright grwn, orata-lanceolate or trtangalar-obtan-* In 

 V'e outline, Tim a e; ^Vr/* o-- } .t<-, 3 to? j arted (cnLe i.prcr l-arely ch-ft).co(-'ct -tL- 

 cd: veins forking from a midrib. 



Mountain rocks. Allegheny mountains, and "Bethlehem, rare. Jnly. SdtAu 

 £7 en; sttJk l.-rownith. 



C. A. FlLlX-MKTWA; IT Brown. Female Sphenicort. 



Frond 2- pinnate, 1 to 3 feet high, smooth, oblong or 1 Inoeolate in outline; phtn.jt 

 lanceolate, numerous: the narrowly oblong piniinles confiaent on the raehis by a 

 r-nrrow margin, sharp!-? pinnatifiti-toethed ; /ruit-dols oblong, at Drat straight, 4 

 k»T pair* on each pinnule. 



He lit woods, common. Julj. SUp$ tawny. 



8. DICKSON1A; L'lTerir. 



In honor of Janus Dicltcn, an English cryptogamoua bOta*it«t, 



Fruit-dots small, globular, marginal, each place:! on th« 

 apex of a free vein or fork, enclosed in a recurve 1 little 

 cup-shaped or 2-~l:pped sac, which consists of a reflexed or 

 changed lobelofc or tooth of the fron 1 united by its edgis 

 with those of a nearly similar proper imlusium, which is 

 fixed along its base on the inner side; receptacle eleval 

 globular. 



D. puxctilouula, Hook! miry Duksonia. 



Minntely elandular and hairy ;. fronds II to 23 inches high, ovatedanreo'a'.e 

 snd pointed in outline, pale ereen and t< -ry thin, with strong stalks rising from 

 slf-nder extensive' v creeping rootstock, pinnate; jrinna lanceolate, twice pinnatiftl 

 and cut toothed, the lobes oblong; fi uil-dois minute, usually one at tha npp«r 

 Bnrjrin t>f each lole. 



Koist ebady places, common ; odorous. July, 



0: CYSTOPTERI3, Bemhardi. Bladder-Fern. 



Gr. iautiti a bladder, end pUris, Fern, from the saolikt indnrirtm. 



Fruit-dots roundish, borne on the middle of a straight 

 fork of the free veins. Indusium oblong-kiJney-shaped, 

 hood-like, attached by abroad inflated base on the inner 

 aide partly under the fruit-dot, opening free at the outer 



