G70 FILICES. 



CHEILANTHES, Swartz. 



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

 Bmoothish; frond smooth, broadly lanceolate, 2-8 pinnatifld, 3'-9' long; 

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

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

 mouth of the St. John's (Curtis*). — 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 shortly lobed, bearing the transverse sori at their tips. — 

 Bast Florida [Feay, ij-c). — Fern 1 -;J° 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 other. 



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

 frond lanceolate-oblong, acute, slightly serrulate, cordate at the base, 6'-9' 

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

 ward. 



ASPLENIUM, L. 



A. Bradleyi, Eaton. Frond thin, pinnate below, pinnatifld above, lanceo- 

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

 lowest ones lobed or pinnatifld. — East Tennessee (Eaton). — Rootstock 

 short. Stipe smooth, black. 



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

 below, pinnatifld above, long-attenuate and often rooting at the apex, &'— 9* 

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

 Central Alabama, and northward. Rare. 



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

 long; pinnae nearly opposite and sessile, oblong, entire or crenulaie. auricled 

 on one or both sides at the ba8e,2"-6" long; sori halfway between the 

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



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

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



nate ; pinnae lanceolate, obtuse ; pinnules oblique, entire on the Lower edge, 



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

 County, s. Florida [C. F. Adams). 



A. firmum, Kunze. Rootstockg short; frond ovate or oblong, pinnate, 



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



ilate or oblong, obtuse, serrate, the terminal one attenuate; sori in two 



rows. — Marion County, Florida [J. D. Smith). 



