PTERIS. 223 



104. Pt. (Litobrocliia) eIata,Ag.; frond ample subcoriaceo- 

 membranaceous l)ipiniiate, piiinte petiolate ovato-laiiccolate 

 deeply piiuiatifid, segments remote lanceolate long and finely 

 acuminate serrated at tbe apex, sinuses biangulate, basal veins 

 3-4-arcuate, tbird series of areoles submarginal, sori conti- 

 nuous round the sinuses, stipes and racbises pale-brown or 

 straw-colour glossy smootb. — Aff. Sp. Gen. Pterid. jj. 63. 

 Pt. macroptera?, Lk. Hort. Bcrol. p. 32 {Ag). Klotzsch in 

 Linnaa, xx. p. 342 ? 



Hab. Panama, Cuming, n. 12G7, and Chirambira, Seemann {Herb. Nosfr.). Ca- 

 racas, E. Otto, in Herb. No.ifr. n. 607 ? — " Species," says Agardb, " si quid video 

 certe distincta, sinubus biangulatis et venis pbiri-arcuatis necnon jiefiolis loiigiori- 

 bus ab afRnibus diver«a. . . . Pinna circiter pedales petiob's semipollicarihus suf- 

 fulta;, inferiores pinnubitx. Laciniae angulo fere recto a parcncbymate costae 

 cgredientes, lanceolatje, et apice longe acuminata?, medio aliqnantuhmi latiores, 

 majores usque 4-pollicares. Sinus biangulati. Venae basales plerumque 3 arcus 

 efficiunt, quorum infimus sequentes longitudine a;quat. Areae secundana; singulae, 

 arcubus superioribus duol)us interjectEe, costam fere tangunt." — Accurately as 

 Agardb bas descril)ed this Fern from si)eciniens in our berbarium, I cannot but 

 question its being really distinct from the Pt. aculeata. The specimens from 

 Seemann, which I am disposed to consider tbe same, exhibit some pinnae quite 

 resembling that species, and having both angled and rounded sinuses. It is pro- 

 Ijably a very variable species, and our friend Dr. Klotzsch may be quite right in 

 referring to it E. Otto's n. 607, which exhibits very varied pinna; on the same 

 specimen, and upon a large scale. In tbe authentic sample now before ns, tbe 

 apex of a branch 2 feet long is pinnatifid, with segments 6-7 inches long ; below 

 it is pinnated with entire or nearly entire pinnae of the same length, anil below 

 that with ovate, acuminated, pinnatifid pinnae. Tbe same form I possess from 

 Tovar, Columbia, from Moritz, n. 118, named " Pt. fiif/antea. Herb. Willd. ;" and 

 so Dr. Klotzsch says it is the n. 19,990 of that ilerb. (l)ut not of Sp. Plant.), 

 and from Fendler,* n. 95 ; and n. 155 of Linden, Caracas, only differs in having, 

 between the lower pinnatifid pinna; of the branch and the terminal one, five pairs 

 of remote, entire pinnae. 



105. Pt. (Litobrocbia) propinqua, Ag. ; " frond rigid be- 

 low bipinnate, pinnules subpetiolate lanceolate wider at the 

 base pinnato-partite, segments lanceolate subfalcate rather 

 obtuse mucronate and sharply serrated, sinuses rather acute, 

 basal veins monoarcuate, secondary or tertiary areoles mar- 

 ginal," Ag. Sp. Gen. Ptevid. p. G5. — Pt. polita. Link, Hort. 

 Berol. p. 30. Var. Cumingiana, Ag. ; narrower, pinnfc 4-5 

 inches long, and an inch and a half broad (segments shorter 

 and more falcate). — Ag. I.e. Pt. Orizabee, Mart, et Gal. Fil. 

 Mex. p. 53. t. 13. Pt. apicalis, Liehm. Fil. Mex. p. 78. Pt. 

 podophylla, Schlecht. in Lmncea, v. p. 614. 



* This fine specimeu of I'cndlcr exbiliits the stipes as thick as the little finger, 

 which is rough with small points at tbe base, and, as well as tbe short portion 

 of a horizontal rhizome, clothed with subulate, black, rigid scales. 



