POLYPODIUM, § NIPEIOBOLUS. 53 



pactly pannose of a whitisli colour, costa stout, costules evi- 

 dent l)ut not elevated, venation indistinct quite that of true 

 Campyloneuron, the areoles from 15-20 in a series between 

 the costa and the margin each with numerous included free 

 soriferous veinlets, sori rather small most copious all over 

 the hack of the frond elevated suhglobose (not in the least 

 sunk) forming as many arched series between the costules as 

 there are areoles. 



Hal). Mishmee and Boutan, Griffith. — This fine species vies with, if it does 

 not exceed, in size, our P. Boothii, and the venation and arrangement of the sori 

 are similar, hut it is a very dirterent species : the frond is much more sharply acu- 

 minated and much more attenuated at the base ; the tomentum, if it may here 

 be so called, is more pinnose or furfuraceous, forming a rather glaucous stratum; 

 and the sori are all attached to the surface, and thus, though small, very promi- 

 nent. 



316. P. (Niphobolus) Boothii, Hook.; caudex ?, stipes 16 

 inches long and stout in proportion tawny-brown paleaceous 

 with imbricating ferruginous lanceolate scales only at the 

 very base, frond carnoso-coriaceous 16-24 inches long 3-4 

 inches wide elliptico-lanceolate obtusely acuminate moderately 

 attenuated glabrous and punctated above with minute black- 

 ish dots (probably corresponding with the receptacles of the 

 sori) beneath covered with a dense velvety mass of ferruginous 

 stellated tomentum, primary costular veins evident but not 

 prominent united by transverse arched veins as in Canipylo- 

 neuniin 10-12 series between the costules each including 

 several free soriferous veinlets, sori small partially suidv in 

 the tomentum forming transverse lines between the costules 

 and as many as there are areoles. 



Ilab. i3outan, Eastern Himalaya, Grijiths, Booth. — This is a noble species, as 

 far as I know, peculiar to the locality just specilied. The down, covering the 

 whole under side, forms a rich velvety mass of a bright ferruginous colour, studded 

 with the neatly-arranged series of sori. 



317. P- (Niphobolus) linearifolium, Hook.; caudex long 

 creeping paleaceous with densely imbricated subulato-seta- 

 ceous shining scales, fronds scattered but aj)proximate erect 

 carnoso-coriaceous sessile 3-4 inches long 1-H line wide 

 linear obtuse scarcely attenuated at the base the margins re- 

 curved laxly tomentose with scattered stellated api)resscd 

 hairs at length glabrous above, veins forming two irregular 

 series of oblong large areoles ])arallel with the costa (no evi- 

 dent costules), sori oval distant terminal on a short included 

 veinlet forming a single series on each side between the costa 

 and the margin. Hook. 2d Cent, of Ferns, t. 58. 



