226 FILICES. 



A good illustration of the form of the pinnules and the son of 

 this Fern may be found in Hooker's Genera Filicum. We mention 

 this, on account of the species having often been confounded with 

 others of a similar habit. 



3. Odontoloxia Macil&ana, 



0. rhizomate repente squarnoso; stipite Icevi angulato; frondibus lineal 

 lanceolatis pinnatis; pinnis plurimis altemis ?nembranaceis glabris 

 dimidiato-oblongis obtusis bad obliqua truncato-cuneata, margine in- 

 feriori integer rimo subcurvato, superiori crenato; sorts rotundis; in- 

 dusio sem (orbicular i. 



DavaUia Macrmana, Hook. & Am. Bot. Beech. Voy. p. 108. 



Hab. Sandwich Islands : frequent. 



Rootstoch creeping, ascending the trunks of trees to a height of 20 

 feet, about the thickness of a crowquill, and thinly covered with 

 rigid, short, ferrugineous, reticulated scales. Stipe 2 to 4 inches long, 

 smooth, bearing a few slender scales at the base, and together with 

 the rhachis angular, of a pale straw colour. Fronds usually from 

 a foot to 15 inches in length, linear-lanceolate, pinnate, attenuated 

 very gradually towards both ends. Pinnoe numerous, about;'10 lines 

 long by 3 lines broad, membranaceous, smooth, dimidiate-oblong, the 

 point rounded, the superior margin crenate, the crenules soriferous; 

 the round sori forming a continuous line from the angle of the trun- 

 cate-cuneate base along the upper edge and round the point to the ter- 

 mination of the inferior margin, the latter usually somewhat recurved 

 for about half its length ; the truncate-cuneate base approximating to 

 and parallel with the rhachis. Sori round; the indusium membra- 

 naceous and subrotund when seated on one venule, or reniform when 

 resting on two conjoined venules, considerably shorter than the cre- 

 nules. Veins oblique, forking once or twice after leaving the primary 

 nerve or costa. 



We cannot agree with Sir William Hooker, in the opinion that 

 this is a mere state of Saccoloma (DavaUia) Boryana of Presl, the 



