60. ACEOSTICHUM, **** EGENOLEIA, ***** KHIPIDOPTERIS. 415 



Hab. Mexico and West Indies to Peru and Brazil. — This and A. pviens may be dis' 

 tinguished from the rest by their long dangling narrow-cylindrical fertile pinnules. 



81. A. (Polyb.) osmundaceum, Hk. ; rhizome woody, wide-scandent, clothed 

 with long linear scales ; St. 12-18 in. 1., firm, erect, stramineous, scaly only at 

 the base ; fr. ample, tripinnatifid or tripinnate, the lower pinncB 1-2 ft. 1., 4-8 

 in. br. ; barren pinnl. stalked, lanceolate, cut down nearly or quite to the rachis 

 below into close subentire lobes ; texture subcoriaceous ; both sides naked ; fertile 

 fr. and j>inn<E nearly or quite as large as the barren ones ; segm. linear, cylin- 

 drical, f^ in. 1., with a space between them. — Hh. Sp. 5. p. 246. A. cylindricum, 

 HJc. I. c. 



Hab. Cuba to Ecuador and South Brazil 



82. A. (Polyb.) canaliculatwm, Hk. ; rhizome woody, wide-scandent, spinulose 

 and densely clothed with linear scales ; si. 1 ft. or more L, scaly throughout ; 

 fr. 2-3 ft. 1., 12-18 in. br., tripinnate ; lower harren pinna 6-9 in. 1., 4^5 in. br. ; 

 pinnl. lanceolate, stalked, cut down to the rachis below into oblong lobes ; 

 texture subcoriaceous ; both sides naked ; fertile pinnl. close, the branches \ in. 1., 

 spreading at right angles and bearing 3-4 sessile balls of soil. — Hk. Sp. 5. p. 247. 



Hab, Venezuela. — ^Very near the last, but the fertile segments monilifonn. 



83. A. (Polyb.) Lechlerianum, Hk. ; rhizome woody, wide-scandent, scaly ; 

 si. 6-12 in. 1., firm, erect, scaly downwards ; fr. 3-4 ft. 1., 12-18 in. br., the 

 barren one quadripinnatifid ; lower pinna 6-9 in. 1., 4-5 in. br. ; pinnl. close, lan- 

 ceolate; segm. oblong, cut down nearly to the rachis into ligulate lobes ; texture 

 subcoriaceous ; rachises pubescent ; fertile pinnl. narrower, distant, the segm. 

 between oblong and cylindrical, with a space between them, the lower ones rather 

 beaded.— ffi. Sp. 5. p. 246. 2nd Cent. t. 97. 



Hab. Peru, Lechler, 2156, Spruce, 4744 ; Ecuador, Jameson. — Much more divided 

 than any of tlie preceding. 



««»* Egenolfia, Schott. Differs from 'PoXyhoirwa, onfy h/ the presence of a seta 

 in the sinus of the lobes of the ultimate divisions. Fig. 60. h, i, j. Sp. 84. 



84. A. (Egenol.) appendicukdum, Willd. ; rhizome fii-m, woody ; barren fr. 

 6-18 in. 1., 4-8 in. br., simply pinnate, sometimes rooting at the apex ; st. 3-6 

 in. 1., erect, naked or slightly scaly ; pinnw 2-4 in. 1., |-| in. br., the edge 

 varying from subentire to cut halfway down to the midrib into blunt lobes, the 

 upper side often auricled, the lower one obliquely truncate at the base ; colour 

 dark-green ; texture papyraceous or subcoriaceous ; both sides naked ; rachis often 

 rather scaly ; fertile fr. narrower, on a longer st., the pinnee roundish or oblong, 

 »ften distinctly stalked. — ft A. HamiUonianum, Wall. ; pinnce la.Tge, lanceolate, 

 acuminate, equal-sided, subentire, the fertile ones with the sori in bead-like 

 clusters without any connecting leaiy membrane. — y, P. ludens, Wall. ; barren, 

 pinnoB 1 in. or more br., equal-sided, deeply pinnatifid, with crenulate lobes, the 

 lowest pair with several distinct pinnatifid pinnl. on the lower side ; fertile pinnce 

 linear-oblong, blunt, entire.— fiit. Sp. 5. p. 251. Ex. F. 2. t. 198. 



Hab. Himalayas to Hong-Kong, Ceylon, the Malaccas, and Philippines. — Ffe enu- 

 merates eight species, and makes of the forms with moniliform fertile pinnae a sub-genus 

 (Orannlina, Bory), but the extremes appear to pass into one another quite gradually. 

 P. Melferiama, Kze., is a small form with beaded fertile pinnae and blunt slightly-lobed 

 barren ones a little truncate at the base beneath. 



***** Rhipidopteris, Schott. Venation jfctbdlate, the fertile fronds small, sub- 

 orbicular, uncut. Sp. 85. Fig. 60. k, 1. 



85. A. (Rhip.) flahdlatum, H. B. K. ; rhizome slender, wide-creeping ; st. 

 distant, 1-3 in. 1., slender, slightly scaly ; ««e?-«7e^. cuneato-flabeUate, J-f iri.br., 



