894 ACROGENOUS PLANTS 



3. A. ebciieum, Aiton. Fronds erect, simply pinnate ; pinnae 

 sessile, lance-oblong, sub-falcate, auriculate on the upper edge ; 

 stipe black. 

 EBONY ASPLENIUM. 



Fronds 6 to 12 inches long, and % of an inch to 1^ inches wide ; pinnae % to 

 % of an inch long, serrate, sometimes a little cordate at base; stipe 1 to 3 inches In 

 length. Sori oblong, finally confluent. 

 Hob. Rocky woodlands : frequent. Fr. July. 



4 A. thelypterotdes, Mb\ Fronds pinnate, with the pinnae 

 deeply pinnatifid ; lobes oblong, obtuse, crenulate. 

 THELYPTERIS-LIKE ASPLENIUM. 



Fronds 12 to 18 inches long, and 4 to 6 inches wide, in their outline oblong- 

 lanceolate, acuminate, rather flaccid, smoothish, and pale glaucous-green ; pinnan 

 2 to 5 inches long, acuminate, pinnatifid, the- acumination crenate-serrate ; 

 common rachis slender, slightly pubescent; stipe 6 to 10 inches long, slender, 

 slightly chaffy. Sori acute at each end ; indusium convex, thickish. 

 Hab. Moist woods ; shaded banks of streams : frequent. Fr. July. 



ium./naKy lunate, or reniform, free at the ends. 



5. A. FiliiX-foemilia, R. Br. Fronds bipinnate; pinnae 

 lanceolate ; pinnules lance-linear, incised-serrate, confluent at base ; 

 sori oblong, lunate, at first straight. 

 Aspidium asplenioides. Wttld. J- FL Cestr.. ed. 2. p. 579. 



Fronds 12 to 18 inches long, and 4 to 8 inches wide; pinnae 2 to 4 inches long, 

 subsessile ; pinnules oblong, doubly and unequally incised-serrate ; common rachis 

 3-grooved above, naked, and. smoothish; stipe 6 to 12 inches long, smooth. Sori 

 short, in a double row, near the midrib of the pinnules, the indusium bursting 

 along the convex margin. 

 Hab. Moist woodlands: frequent. Fr. July. 



4. DICKSONIEAE: Sori round and dot-like, marginal, with a kind of double, or 2- 

 lobed indusium. 



517. DICKSOWIA, L'-Heritier. 

 [Dedicated to James Dickson ; an English Eotanist.] 



Sori globular, small, each placed on the apex of a free vein, or 

 fork, and inclosed in a little 2-lipped sac,, consisting of a reflexed 

 and modified lobelet, or tooth of the frond, united by its edges with 

 those of a nearly similar proper indusium, which is fixed along its 

 base on the inner side ; the receptacle elevated. 



1. D. pimctilolmlcl, Hooker.. Fronds thin and pale green, 

 bipinnately dissected ; pinnae lanceolate, bipinnatifid, and incised- 

 serrate ; sori solitary, one at the upper margin of each lobe. 

 D. pilosiuscula. Willd. $ FL Cestr. ed. 2. p. 584. 



DOTTED-LOBED DlCKSONIA. 



Minutely glandular and hairy, somewhat odorous. Fronds 1 to 2 feet long, and 

 4 to 6 inches wide, lance-oblong in their outline; pinnae 3 to 4 inches long, most- 

 ly alternate, sessile; pinnules about half an inch in length, pinnatifid, the lobes 

 with 2 to 4 teeth ; stipe 4 to 8 inches long, hairy, pale green, or reddish tawny. 

 Hab. Moist shaded grounds : frequent. Fr. July. 



