104 FILICES. 



squamose : rootlets filiform, fulvous-tomentose. Stipes of a sooty- 

 brown colour, smooth, shining, semiterete, plane in front, with a narrow 

 margin, squamose-hirsute at base ; the scales slender, linear, attenuate, 

 with a black costasform line in the centre. Fronds broad-ovate, cordate, 

 sometimes showing a tendency to be five-angled, glabrous, and of a 

 whitish-green colour on the under surface, pinnate at the base, the 

 upper half pinnati fid. Pinnce opposite, consisting of 3 to 4 pairs, 

 spreading, deeply pinnatifid. Segments one to lh inches long, about 

 2 lines broad, linear, obtuse, the lower and inferior one often again 

 divided. Sinus wide and angular. Veins very slender and usually 

 evident to the naked eye, forming very long, oblique, angular areoles. 

 Sori continuous, seldom interrupted, except at the base of the sinus, 

 where they are altogether wanting. Indusium plane and rather 

 broad. 



Although the fronds of this are not strictly pedate, yet they may 

 be said to resemble in many respects some forms of D. pedata; but its 

 much smaller size, deeper divided and less coriaceous fronds, the nar- 

 rower and more uniform size of its segments, the sori being inter- 

 rupted in the sinus, together with its paler stipe, readily distinguish it 

 from that species. 



Plate 13.— Fig. 1. Entire plant, of the natural size. 1 a. Section 

 of a segment, showing the venation and sori. 1 b. Scale from the 

 base of the stipe. 1 c, c. Sporangia. 1 d. Sporules.— The details mag- 

 nified. 



41. LITOBROCHIA, Presl, J. Sm. 



(Pteridis Spec. Linn. & Auct. Campteria, Presl.) 



In the few species which compose the genus Campteria of Presl, 

 only the lower venules next the midrib anastomose, and their habit 

 not differing in any way from many genuine species of Litobrochia, 

 Mr. J. Smith has very properly united them to the present genus. 



