FILICES. 



461 ASFLENIUM. 



to o:ie ?"'\ In damp woods. Frond 12--18 inches high, remarkable for the' 

 lit'.ic bulbs produced in the axils of the rachis, which, falling- to the ground, 

 take root. Foliaoe narrow, tapering to an acuminate sunanit. Stipe smooth. 

 July. 



3. ASPLE'NIUM. 

 Sori linear, oblique, or somewhat transverse, scattered ; 

 iiidusium arising (roin the lateral veins and opening longilu- 

 dinalij, usuallj towards the midrib. 



J. A. rhizophv'lluji. Walking Fern. 



Frond mostly undivided, lanceolate, stipitate, subcrenate, cordatc-auriculate 

 at base, the apex attenuated into a hjug, 'slender acumination. rooting at the 

 point. This singular tt^rn grows in rocky woods, not very common. The 

 frond is -l — 8 inches long; the long, slender, linear point bending over back- 

 wards, reaches the earth and there strikes root, giving rise to a new plant. 

 Though usually vi'ilh slightly crenate margins, the jdant varies by inij^ercepl- 

 ible degrees, becoming sometimes so deeply crenate as to torm a variety Willi 

 pinnititid fronds. July. 



"i. \. i:be'n"eum. Ehunij S[nccnicoTt. 



Frond pinnate ; leajJcls lanceolate, subfalcalc, serrate, auriculate at base, on 

 tiie upper side: stijic smooth and polished. A beautiful fern, in dry woods, 

 hills, &c. Fronds 8—14 inches high, on a slender stipe of a shining brov.'n or 

 blcick color. Foliage 5- -9 inches long, 1—U inch wide, linear-lanceolate in 

 outline. Leaflets near an inch in length, father acuminate and curved at 

 ;>.;i-x, dilated at base on the upper side, and sometimes on the lower. Fruit 

 i;i ranged in short lines on each side the midrib. July. 



:'. A. angustifo'litm. Mx. Swamp Sphcnicort. 



Frond pinnate ; IcafMs alternate, upper ones subopposite, linear-lanceolate, 

 f-erratc towards the apex, somewhat lepand, the base truiicaie on the upper 

 f.ide and rounded on the lov.-er. In low woods. Fronds ]— 2 feet high, in 

 tufts, the outer ones barren, inner fertile. Sori large, diverging from the 

 midrib, parallel with the veins, at length confluent. July. 



4. A. Tricho'.manes. L. Dzcarf Splccnwort. A. mclanocaulon. Muh. 

 Frond pinnate ; leaflets roundish, subscssile, small, roundisli-obovate, 



ebtusely cuneate and entire at base, crenate above ; st'rpa black and polished. 

 A small and delicate fern, forming tufts on shady rocks. Frond 3— ti inches 

 high, lance-linear in outline, v.'ith 8—12 pairs of roundish, sessile leaflets 

 ::— 4 lines long. Fruit in several linear-obiong, finally roundish son on each 

 leaflet, placed oblique to the midrib. July. 



5. A. theliptekoi'des. Mx. Silvery Splcemr.ort. 



Frcnd bipinnatifid ; Jenfiets pinnatifid, oblong- lanceolcle, acuminate ; srg- 

 ■r:(-\t!i oblong, obtuse, serrate- crenate ; sori in parallel, oblique lines. A hue, 

 1 xr i-e fern, on shady lianks of streams. Fronds H— o ieet Jiigh, of an ovale- 

 ;c-dmi:iate' outline, cu a slightly chaffy, pale stipe. Leaflets distinct and 

 i-aliicr remote, narrow. 4— G inches long. Segments rounded at the end, near 

 -: rui inch long. Sori arranged iu 2 rows on each segment, one on each side 

 t.'ie midrib, convergent below, with shining, silvery indusiu v/hen young. Jl. 



i; A. FiLis-F(E5ii.N-A. Bcrnh. Aspldium Filixfemlna & asplenoides. S(r. > 



A. angubtuin. W. 5 

 Frnid bipinnate : Icujlcts lanceolate, acuminate ; scgmrnis oblong-lanceolate, 

 deeply cut-i)innatifid ; iiltnualcse.sments2—S toothed ; sori ro'iiform or lunate, 

 air;;nged near the nerves; stipe saMvih. A delicate, finely-divided fewi in 

 00* 



