﻿298 54. DAVALLIA. § 2. COLPOSORIA. 



d. Indiisium more broad than long, or shortly attached in the 

 lower half of the sides. 



%. Indusium half-ciipshaped, shortly attached at the sides 

 nearly as in Hiimata. (5) D. Griflithiaiia. 



:^.^. Indusium broader than deep, attached at the sides 

 throughout. (o) D. Lobbiana. 



d.d. Indusium ± (is broad as long, attached at the sides throughout. 

 e. Indusium cuneate. (7) D. stenoloba. 



e.e. Indusium hal/'-cupshape<l, or suburceolate, the apex sub- 

 rotund. (8) D. pallida. 

 e.e.e. Indusium half-cupshaped, the apex truncate. 



f. Apex of indusium + reaching the margin of the 



segment. Spurious veins more or less distinctly present. 



g. Rhizome scales crisped and interlaced, shorl- 



ciliate. (9) D. denticulata. 



g.g. Rhizome scales flat, entire. ((0) D. epiphylla. 



f.f. Apex of indusium at some distance from the margin 



of the segment. No spurious veins. (11) D. decurrens. 



e.e.e.e. Indusium + orbicular or elliptical, the apex rounded 



or deltoid-roundish. (12) D. elata. 



c.c. Indusium generally longer than broad ('). 



±. Indusium less than 2 "X^ as long as broad. 

 2. Fronds under 50 c.M. long. 



3. Rhizome scales nearly black. (15) D. Lorraiiiii. 



3.3. Rhizome scales whitish or pale-brown. 



4L. Edges of the ultimate segments not incised at 

 the inner side of the sori, the teeth therefore 

 not lobe-like. (14) D. pyxidata. 



J.^. Edges of the ultimate segments incised at the 

 inner side of the sort, which gives the teeth the 

 appearance of very small, soriferous lobes. 

 S. Indusium half-cupshaped to semicylindrical. 

 e. Soriferous teeth short and broad. 



(15) D. buUala. 

 6.6. Soriferous teeth long and narrow. 



(16) D. fructuosa. 



(*) See also D. elata, Spr. 



