DICKSON I A. 



189 



on stalks, 6in. to 9in. long, that are densely clothed with firm, bristly scales 

 Jin. long, and of a very effective, bright hght-brown colour. These fronds 

 are of the same rigidly -coriaceous texture, and their segments, hke those of 

 B. squarrosa^ are spear-shaped and toothed when barren and deeply cleft and 

 contracted when fertile. The sori (spore masses) are disposed six to eight 

 to the lower segments and covered by an involucre with round, hard valves 

 of a smooth nature. — Hooker^ Synopsis Filicum, p. 461. Nicholson^ Dictionary 

 of Gardening^ i., p. 468. 



DICTYMIA— Dic-tym -i-a. See Polypodium. 

 DICTYOGRAMME — Dic-ty-og ram -me. See Gymnogramme. 

 DICTYOPTERIS— Dic-ty-op -ter-is. See Polypodium. 



