52 F I L I C E S. 



lateral segments distant, lanceolate and acuminate, 6 to 8 inches in 

 length, or short and rather oblong; the terminal one from 10 to 15 

 inches long, by 2 to 3 inches broad, obtuse, with a repand-sinuate 

 margin ; the sinus broad and rounded at the base. Hhachia smooth 

 and prominent, particularly so on the lower side. /Sori partially sunk, 

 large, round or oblong in form, distant and scattered irregularly over 

 the whole of the under surface of the frond. Sporangia intermingled 

 with clavate articulated glands. On the upper surface of the fronds 

 are protuberances corresponding in form and opposite to the sori 

 beneath, with a small cavity on their top. 



So far as we are aware, this is the largest species of Drynaria 

 known. Its nearest affinity is to D. (Polypodium) pliymatodes of 

 Linnaeus; from which however it is entirely distinct. A full set of 

 specimens shows great irregularity in the division of the fronds and 

 the position of the sori. 



Plate 7. — Fig. 1. Summit of a frond, of the natural size. a. Entire 

 frond, one-fourth of the natural size, b, b. Section of a frond, showing 

 the sori and venation, c, c. Vertical section of the same, showing the 

 partially sunken sori. d, d. Sporangia. — The details more or less 

 magnified. 



18. Drynaria pustulata, J. Sm. 



Drynaria pustulata , J. Sm. in Hook. Jour. Bot. 4, p. 61. 



Polypodium pustulatum, Sw. Syn. Fil. p. 31 & 229 ; Willd. Spec. PI. 5, p. 168 J 

 A. Cunn. in Hook. Comp. Bot. Mag. 2, p. 363. 



Hab. Yicinity of the Bay of Islands, New Zealand. Auckland 

 Islands : on rocks and trees, sometimes on the ground. 



This, like its near ally D. pliymatodes, and perhaps in a still greater 

 degree, is found to vary in the size and divisions of its fronds; the 

 more usual state of which is to be pinnatifid, with oblong-lanceolate, 

 acuminate segments, diminishing in size towards the point, with an 

 entire thickened margin. The sori are most profuse on the upper 

 half of the frond, extending from the rhachis to the very point of the 



