5'jJ ru.iCKS. (fkkxs.) 



rise to new plants. (Asplcniuin iliiz()[)liyllum, /,.) — Slnulcd rorks on tlio 

 mountains of Georgia, and nonliward. — Fronds 4'- lo' long. 



11. ASPLENIUM, L. 



Fruit-dots oblong or linear, oblique to the midrib, the indusium atfnrlicd hy 

 one mar;:in to the mostly free veins, rarely curved, or double and aitaehud to 

 both sides of the vein. 



^ 1. ASPLENIUM Proper. — Indnsia straujhl , atlnched hii t/uir uliole Icnijth 



to the upper side ofl/te vein; rarelij some of llitiii duiilJe, and placed back to back. 



* Fronds pinnatijid or siniplij pinnate. 



1. A. pinnatifldum, Nutt. Fronds lanceolate, acuminate, cordate at 

 the base, pinuatiiitl, or i)elo\v sometimes pinnate, the roundish divisions obtuse, 

 crenate or senate; fruit-dots scattered. — Alleghanies of Alabama, and north- 

 ward. — Fronds 3'-6' long. A form witli tlie lowest segment on each sido 

 elongated horizontally and acuminate, has been found in Alabama by Mr. Beau- 

 mont. 



2. A. dentatum, L. Fronds linear-oblong, obtuse, pinnate ; pinnae 

 mostly o|)posite, 8-12 pairs on short but distinct stalks, roundish ovate (3" -4" 

 long), euncatc at the lower side of the base, and truncate at the ujjpcr side, cre- 

 nate or serrate, obtuse; fruit-dots 6-8 on each ))inna, elongated, the one next 

 the rachis often double. — Carolina, T/i. Moore, Florida, Binnei/. — Fertile fronds 

 4' -6' high, the stipe as long as the sterile fronds. 



3. A. Trichomanes, L. Stipe and rachis slender, purplish black and 

 shilling; fronds many from the short rootstock, linear, pinnate ; pinmc numer- 

 ous, minute (2"-3" long), roundish oblong, narrowed at the base and attached 

 to a raised point on the rachis; fruit-dots 4-8 on a pinna. (A. melano- 

 caulon, Willd.) — Ilocks along the Alleghanies, and northward. — Fronds 4'- 

 8' high. 



4. A. ebeneum, Alton. Stipe and rachis purplish black and shining; 

 fronds linear-lanceolate or spatulatc, acuminate, piimato ; piunre numerous, ses- 

 sile, linear-oblong, auricled on one or both sides of tiie base, serrate or nearly 

 entire, those below the middle of the frond gradually shorter and dcflexed ; fruit- 

 dots 10-13 on a pinna. — Florida to Mississippi, and northward. — Fronds 6'- 

 18' high, l'-3' wide; stipe very short. 



5. A. angUStifolium, Michx. Fronds tall, lanceolate, pinnate; pinnsB 

 numerous ; the .sterile ones lanceolate from a truncate base ; the fertile ones nar- 

 lower, and bearing 60 - 80 curved fruit-dots on the upper branches of the pin- 

 nate forking veins; indnsia thickisb, strongly convex. — Kich soil along the 

 mountains, and northward. — Fronds 1° -3° high, annual. Pinnai 2' -4' long, 

 4" -8" wide. 



* * Fronds 2 - 3-pinnate or pinnatijid. 



6. A. montanum, Willd. Fronds small, ovate-lanceolate, pinnate ; pin- 

 na; few, petioled, ovate or triangular; the lower ones pinnatifid ; the upper ones 

 incised ; divisions toothed or serrate ; fruit-dots very short, the basal ones often 



