6'ZO FLOJiA OF TEXAS. 



stalks hirsute with rusty hairs, bipinnate; j^inncu triangu- 

 lar-ovate; pinnules oblong, obtuse, more or less incised; 

 the ends of the lobes reflexed to form separate herbaceous 

 involucres. Fronds 4-8' long, becoming smooth above. 



ADIANTUM, L. Maidenhair. 



Indus iuvi orbicular or transversely elongated, formed 

 of a reflexed and altered portion of the margin of the frond, 

 bearing the sporangia on its under side at the ends of the 

 veins; midrib none or eccentric; veins forking, mostly 

 free; sti^M and racliis commonly black and shining. 



A. Capillus- Veneris, L. Frond ovate-lanceolate, 2-3- 

 pin n ate ; pinnules very delicate, oblique, broadly wedge- 

 sliaped or sometimes rhomboid, rather long-^tall-ed, the 

 upper margin deeply incised and fruit-bearing or sterile 

 and dentate; stipe slender, ebeneous; racliis almost capil- 

 lary, flexuous. Mostly pendent from limestone cliffs. 

 Austin and west to the San Antonio. Fronds l^-o'' long. 

 Found also in Buffalo Bayou. 



ASPLENIUM, L. 



Fruit-dots oblong or linear, oblique to the midrib, the 

 indusijun attached by one margin to the mostly free veins, 

 rarely curved, or double and attached to both sides of the 

 vein. 



AspLENiUM proper. Indusia straight, attacked by their whole length to the ujiper 

 side of the vein ; rarely some of them double, and placed back to back. 



* Fronds pinnatifid or simply pinnate. 



A. ebeneu^i, Alton. Stijje and rack is purplish black 

 and shining; fronds linear-lanceolate or spatulate, acumi- 

 nate, pinnate; pinnce numerous, sessile, linear-oblong, 

 auricled on one or both sides of the base, serrate or nearly 

 entire, those beloAv the middle of the frond gradually shorter 



