6S 16. HYMENOPHYLLUM. 



53. H. falllandiciim, Baker ; rhizome capillary, wide-creeping ; St. filiform 

 ^-f in. ; fr. oblong, bipinnatifid, 1-2 in. 1., ^-^ in. br. ; rachis Hexuose, filiform ; 

 pinnce erecto-patent, 6-9-jugate, sessile, not adnate, upper simple, lower deeply 

 2-3-tid ; lobes ligulate, 1-veined, | lin. br., very distinctly ciliato-dentate ; sori 

 solitary, at the base of the upper pinnae in the uj)per side ; inv. J in. deep, the 

 lanceolate entire valves much exceeding the short tube. 



Falkland Islands, Dr. Hooker, Capt. Abbott. 



54. H. tcnerrimmn, V. D. B. ; st. very slender, ^-| in. 1., naked ; fr. 1-2 in. 1., 

 less than f in, br., pinnate, only the very summit winged ; pinnce distant, very 

 small and slender, simple or once or twice forked, vaguely undulato-dentate ; 

 sori 1 or 2 together, terminal ; mvol. divided down nearly to the base ; valves 

 rounded and ciliated. — V.D.B. Suppl. p. 101. 



Hab. Peru, Spruce, 4700 and 4702. — Much the most slender and diminutive species 

 of the section. 



65. H. Jamesoni, Ilk. ; st. 1-2 in 1. ; fr. flaccid, linear, 3-9 in, L, ^-| in. br. ; 

 rachis only slightlj- winged towards the apex, fringed throughout with soft mem- 

 branous s/>mc5 ; pinnce forked at the apex, and with only 1 or 2 \int&v segm. 

 on each side ; invol. axillary, solitary ; valves obovate, conspicuously spinose. — 

 Hk.Sp.l.p.m.t.^o.A. 



Hab. Andes of Columbia, Jameson. — Readily distinguisliable by its long narrow frond 

 and flaccid habit. The costa, like the rachis, is conspicuously fringed with membranous 

 spines. 



56. H. barhatum. Baker ; st. erect, naked, 1 in. or less 1. ; fr. oblong-trian- 

 gular, 1^-2 in. 1., about | in. br., tripinnatifid ; rachis winged throughout ; lower 

 pinnw rhomboidal-oblong, with a broad winged rachis and short broadly linear 

 spinuloso-dentate^e^^r?/?. ; sori terminal on the segments of the upper pinnae ; invol. 

 suborbicular or broadly oblong ; valves divided more than halfway down, and 

 deeply spinulose-dentate. — Leptocionium barbatum, V. D. B. Suppl. p. C2. 



Hab. Tsus Sima, near Japan, Wilford, 846.— A stouter plant than IT. Tunbridgense, 

 with rachis winged throughout, broader segments, and terminal sori. 



57. II. secundum, Hk. & Gr. ; st. 1-8 lin. 1., wiry, naked ; fr. pinnate, linear- 

 oblong, 3-4 in. 1., 1 in. br. ; pinnce recurved, flabellato-pinnatifid ; tdt. segm. nar- 

 rowly linear, spinuloso-dentate, usually falcato-secund ; sori usually solitary, 

 placed on the upper side of the pinnae near the base ; invol. 2-valved about half- 

 way down ; valves oval-oblong, entire. — Hk. Sp. 1. p. 100. Hk. & Gr. Ic. Fil. 

 t. 133. H. Serra, Presl, edit.^l.p. 08. 



Hab. Chili and Patagonia. Near H. Tvmbridgense, but a larger plant, with two or 

 three times dichotomous flabellate pinnae. 



68. H. Simonsiannm, Hk. ; st. slender, wiry, naked, 1-2 in. 1. ; fr. linear- 

 oblong, 2-3 in. 1., I in. br., once pinnatifid down to a broadly-winged rachis ; 

 segm. fan-shaped, with only shallow divisions directed from the apex towards the 

 base ; veins dichotomous, the margins spinuloso-dentate ; sori 1 to 4, terminal on 

 the divisions of the upper pinnse ; invol. broadly oblong, divided nearly to the 

 base ; valves spinuloso-dentate. — Hk. 2nd Cent. t. 13. 



Hab. Khasia Hills and Sikkim, Simons, Griffith, Dr. Hooker. — The least divided species 

 of this section. 



69. H. pectinatum, Cav. ; »t. 2-4 in. 1., wiry, naked ; fr. oblong, pinnate, 3-6 

 in. 1., 1^2 in. br. ; main rachis only winged towards the apex ; pinnce with only 



