670 FILICKS. 



CHEILANTHES, Swartz. 



C. microphylla, Swartz. Stipe dark brown, from a short rootstock, 

 ptnoothish ; frond smooth, broadly lanceolate, 2-3 pinnatifid, 3' -9' long; 

 pinnae lanceolate from a broader base ; pinnules linear-oblong, obtuse, entire, 

 or the lower ones pinnatifid; involucre pale, narrow. — Islands near the 

 mouth of the St. John's ( Curtiss). — Frond 1° or less long. 



ADIANTUM, L. 



A. tenerum, Swartz. Frond deltoid, 3-4-pinnate; pinnules stalked, 

 obliquely rhombic, the wedge-shaped base and lower edge entire, the upper 

 edge broadly and sliortly lobed, bearing the transverse sori at their tips. — 

 East Florida (Feay, Sfc). — Fern l°-3° high, the black stipe and rachis 

 smooth and glossy. 



SCOLOPENDRIUM, L. 



Sori as in Asplenium, but the involucres arranged in pairs, and opening 

 towards each otlier. 



S. vulgare. Smith. Stipe smoothish, 2' - 3' long from a thick rootstock ; 

 frond lanceolate-oblong, acute, slightly serrulate, cordate at the base, G'-^ 

 long, the upper half fruit-bearing. — Shaded rocks, Tennessee, and north- 

 ward. 



ASPLENIUM, L. 



A. Bradleyi, Eaton. Frond tliin, pinnate below, pinnatifid above, lanceo- 

 late-oblong, barely acute, 3' -7' long; pinnse short-stalked, oblong-ovate, the 

 lowest ones lobed or pinnatifid. — East Tennessee [Eaton). — Rootstock 

 short. Stipe smooth, black. 



A. ebenoides, R. R. Scott. Frond thin, broadly lanceolate, pinnate 

 below, pinnatifid above, long-attenuate and often rooting at the apex, 4'-&' 

 long; pinn* lanceolate from a. broader base, 3" - 9" long. — Shady ravines, 

 Central Alabama, and nortliward. Bare. 



A. parvulum, Mart. & Galeotti. Frond rigid, lanceolate, pinnate, 2' -8' 

 long; pinnas nearly opposite and sessile, oblong, entire or crenulate, auricled 

 on one or both sides at the base, 2" -6" long; sori half-way between the 

 margins and midrib. — Calcareous rocks, Florida to Tennessee. 



A. cicutarium, Swartz. Tufted from a short rootstock, 3'- 12' high, 

 smooth ; stipe blackish ; frond thin, ovate or oblong, pinnate or nearly bipin- 

 nate ; pinnse lanceolate, obtuse ; pinnules oblique, entire on the lower edge, 

 toothed on tlie upper, with the teeth 2 - 3-clef t ; sori in two rows. — Sumpter 

 County, S. Florida (C. F. Adams). 



A. firtnum, Kunze. Rootstocks short ; frond ovate or oblong, pinnate, 

 rather longer than the pale smooth stipe, 12' or less long ; pinnae (about 12) 

 lanceolate or oblong, obtuse, serrate, tlie terminal one attenuate ; sori in two 

 rows. — Marion County, Florida (.7. D. Smith). 



