HKMITir.lA. 31 



(j. H. pe/io/(it(f, Hook.; unanned, froiuls lnplicalo-])inniit«', 

 pinnules lancoolate peliolate acinninatu l()l)ato-])iiniatifi(l up- 

 per ones coadunate serrated (nol lol)ed) teruiinaliufjj iu an 

 aciuninated point, sori at the very margin continuing close 

 under the sinus in an uninterrupted line, veins ]nnnated, the 

 lower veinlets angularly anastomosing. (Tai$. \VI.) II. mar- 

 ginalis, ./. Sm. in Hook. Loud. Journ. of Hot. v. i. p. G'2.'2, 

 {name on It/). 



Hab. Isthmus of Panama, Dr. Sinclair. — A perfectly distinct and well- 

 marked species. Each pinna is a foot and more lon>jf, pinnated with remote 

 peliolatcd pinnules, the upper portion only pinnatilid with simply serrated 

 (not lohed) se<;ments. Tiie sori form a beautiful, beaded border along the 

 margin, constituting a single scries, not descending below the sinus, but 

 keeping close to its margin. 



7. H. Hofitmnnni, Hook.; stipes and main rachis scaly es- 

 pecially at the base of the former and tliere aculeated, fronds 

 bipinnated, pinnules oblong very obtuse sessile but cuneate 

 at the base, membranaceous junnatifid or lobed half-way down 

 to the rachis, upper ones coadunate and decurrent, sori re- 

 mote half-way between the sinus and the rachis situated on 

 the middle of the lower veinlets all of which are simple and 

 free. Hook. It: PL v. vii. t C46. 



Hab. Dutch Guiana, Ilostmann, n. 64. — A very distinct and well-marked 

 species, of which I possess an entire frond about 4 feet long, including the 

 stip'es, which is a foot and a half, rich mahogany brown, on one side dense- 

 ly clothed with long dark brown glossy scales, on the other muricated with 

 short aculei. Pinn;p remote, a foot long (the largest), sessile, broad lance- 

 olate, pinnated with oblong, very obtuse pinnatilido-lobate pinnules, the 

 lobes rotiuulato-ovate, obtuse, entire, of a thin and flaccid texture, nerves 

 of each lobe pinnated, only the lowest pair of veinlets (all of which are sim- 

 ple and free) bearing, near the middle, each, a solitary sorus, so that on the 

 j)innules the sori are dista))t, and form a line very remote from the margin, 

 half way between the sinus and the rachis. The upper pinnules are con- 

 fluent, at first simply combined by a decurrent wing, then united iiUo a lol)ed 

 margin and terminating in a blunt entire acunun. The rachis of the pin- 

 niE is rough and somewhat scaly, that of the pinnules slightly strigoso-hispid. 



8. H. ? Gnianensia, Hook. ; unarmed .'' rachis and even 

 the costa beneath slightly scaly and his]iidly strigose, fronds 

 bi-tri-pinnate, secondary rachis distinctly winged esj)ecially 

 upwards between the pinntdos, ])iiniules sessile oblong- 

 lanceolate ending in an obtuse entire acumen pinnatifid 

 rather more than half way down to the rachis mend)ranace- 

 ous, .segments ovate obtuse entire, veins free Ibrked near the 

 middle, sori iew in each segment ("2 — J) on the axil of tlie fork 

 rather nearer the margin than the costa, involucre ciliated ..I- 

 ten forming 2 or :i irregidar lobes chiefly but not (Mitirely on 

 the inferior side of the sorus. J look. fr. 1)7. r. \ii. /. i'^\^. 



