298 



F I L I C E S. 



jugo minore deflexo infra furcationem, axillis gemmiparis ; pinnis 

 oblongo-lanceolatis subfalcatis rigidis pinnatipartitis, segmentis ap- 



proximatis linearibus emarginatis margine revolutis supra nitidis 

 svbtus rhachique rufo-tomeiitosis ; soris e sporangiis 8-12 ccmflatis in 

 lanam nidulantibus. 



Hab. Sandwich Islands ; Hawaii : on open mountain ridges. 



Plant from 8 to 10 feet in height, forming dense, entangled masses. 

 First and second divisions of the round and smooth stipe triclwtomous, 

 the others dichotomous ; the ultimate branches bearing a pair of very 

 rigid, oblong-lanceolate, subfalcate pinnas, which are pinnatifid to the 

 rhachis : segments approximate, linear, constantly and distinctly emar- 

 ginate, and, together with the rhachis beneath, tomentose with a dense 

 coating of a fine rusty and woolly substance, which extends to the 

 forkings of the stipe. The pair of pinnse immediately below the 

 di-trichotomous divisions are from 4 to 6 inches long, of a broad- 

 lanceolate form, and somewhat acuminate at the point. Buds in the 

 forks of the branches, enclosed by two foliaceous auriculated lobes. 

 Veins pinnately forked, most prominent on the upper surface. Sort 

 nearly concealed by the dense ivool, only a few of the sporangia showing 

 themselves ; these are from 8 to 12 in a cluster, seated on the lower 

 exterior venule. 



The habit of this species, though more robust, is somewhat similar 

 to the preceding ; but the very rigid consistence of the pinnse, the 

 strongly marked emarginate segments, the dense coating of brown 

 wool beneath, and the inferior pair of pinnae arising from the stipe 

 immediately below the forkings of the branches (not from the base of 

 the branches themselves, as in that species), are sufficient marks by 

 which the two may be distinguished. 



Plate 42. — Fig. 1. Portion of a frond, of the natural size. 1 a. 

 A portion of a segment as viewed from beneath, with part of the 

 wool removed, to show the venation and sori. 1 b. Sporangia. — Dis- 

 sections more or less magnified. 



