16. HTMENOPHTLLUH. 63 



to the base, tlie divisions linear, dichotomously branched ; ult. segm. 1-3 lin. I., 

 \ lin. br., the surface hairy, and the margin ciliated with branched rufous hairs ; 

 sort terminal, solitary, orbicular the cuneate base sunk in the frond ; valves 

 ciliated. 



Hab. Borneo, on hills near Sarawak, at an alt. of 2,700 ft., io65.— Peculiar in the 

 group by resembling in habit the species of the Gonocm-mus section of Trichomanes. 



32. H. hirsutum, Swartz ; st. 1-2 in. 1., slender, naked or slightly winged and 

 ciliated above ; fr. linear-oblong, once pinnatifid, 2-6 in. 1., about ^ in. br., 

 slender, flaccid, often pendulous, hairy over the surface ; pinntB short, close, 

 erecto-patent, simple, linear-oblong, or cuneato-flabellate, with 1 to 4 divisions ; 

 ult. segm. rather broad, closely ciliated ; sori 1 to 4 on a pinna, terminal on the 

 segments ; invol. suborbicular, the cuneate base sunk in the frond ; valves free, 

 very hairy.— //i. Sp. 1. p. 88. Hk.' ^ Gr. Ic. Fit. t. 84. H. venustum & 

 angustum, V. D. B. H. Raddianum, Muller.—^, S. latifrons, V. D. B. ; fr. 

 larger and more dilated than in the type ; segm. f in. br. 



Hab. Tropical America, from Cuba to South Brazil and Patagonia, Mascaren Islea. 

 — H, latifrons bears the same i-elation to the type that H. splendidum does to 

 ciliatum. 



33. H. cMhense, Hk. ; st. 1-2 in. 1., not winged ; Jr. triangular or ovate- 

 lanceolate, bipinnatifid, 1-2 in. 1., ^-1 in. br. below ; main rachis zigzag, ciliated, 

 and broadly winged ; lower pinnw rhomboidal-oblong, with several rounded or 

 linear jnnnl. on both sides, the margin regularly ciliated, with short strong hairs 

 and the under surface of the frond slightly hairy ; sori placed singly at the base 

 of the pinnae on the upper side, divided about halfway down, the cuneate base 

 free or sunk in the frond ; valves semiorbicular, strongly ciliated. — Hi, Sp. 1. 

 p. 90. t. 32. A. Leptocionium dicranotrichum, Presl. 



Hab. S. Chili and island of Chiloe. — Placed by Presl and Van den Bosch in section 4 ; 

 but its proper position is here. 



34. H. oiliatum, Swartz ; St. 1-2 in. 1., ciliated and decurrently winged above ; 

 /r. oblong-acuminate, tripinuatifid, 2-6 in. 1., 1-2 in. br. at the centre ; main 

 rachis broadly winged throughout and ciliated; lower pinnce oblong or rhomboidal, 

 with a broad central undivided portion, and numerous erecto-patent simple or 

 forked ciliated linear segm. 2-3 lin. 1. ; sori 2 to 12 on a pinna, placed at the end 

 of the lateral segments on both sides; invol. immersed, suborbicular ; valves divided 

 about halfway down, and conspicuously ciliated. — Hk. Sp. 1 . p. 88. Hk. <& Gr. 

 Ic. Fit. t. 36. H. Plumieri, Hk. & Gr. Ic. Fit. t. 123. H. Boryanum, Willd. 

 Hk.Sp. \.p. 89. «. 31. C. 



Hab. Common in Tropical America, from Cuba and Mexico southward to Chill and 

 South Brazil : East Himalayas ; West Tropical Africa, and m the East in the Zambesi 

 district and the islands (Mauritius, Madagascar, Bourbon, Seychelles, and Johanna 

 Island).— The African plant, well known under the name ai Boryanvm, seems quite to 

 coincide with the American ciliaium. It has also been gathered m New Zealand la,tely 

 by Mr Travers. Eleven species, admitted by Van den Bosch, do not appear materially 

 different ■ viz. those already mentioned, and trapezoidale, Liebm. ; vesMum, Presl ; 

 aptenmi, remotmn, am'inamense, Presl ; commalatum, Presl ; Schiedmnum, Presl, and 

 splendidum. The latter is a magnificent form, with fronds 1 ft. 1., pinnK ^ m. and 

 rachis | in. br., which occurs in Guatemala, Ecuador, and West Tropical Africa. 



35. H. obtusum, Hk. & Arn. ; St. 2 in. 1., slender, ciliated ; fr. 2-4 in. 1., 1-2 in. 

 br., lanceolate or ovate-lanceolate, tripinnatifid ; m^in rachis winged throughout ; 

 fozoerMWJMB lanceolate or triangular-rhomboidal, cleft nearly to the rachis mto 

 several linear simple or forked pinnl. on both sides, the surface and margm 

 copiously clothed with pubescence ; sori 2 to 6 to a pinna, terminal on the lateral 



