5. HEMITELIA, AMPHICOSMIA. 



apex pointing upwards ; sori minute, in 2 irregular lines between each pair of 

 costules. Kze. in B. Zeit. 1844, p. 296 ; Mett. Fil. Lechl. p. 23. 



Hab. Tropical America (Pacific side), Peru, Poeppig, n. 244 (pinnae exactly lanceolate) ; 

 Andes of Ecuador, Spruce, n. 5365 (pinnae 2 in. br., elliptical, lanceolate, "caudex none ") ; 

 Guatemala, Forest of Vera Paz, Salvin (pinnae narrow, oblong, 1 in. w.). This appears 

 to be a very distinct species. My specimen under this name from Lechler (Peru, n. 2172), 

 quite corresponds with my other specimens from Spruce and Salvin. 



3. H. (Euhemit.) grandifolia, Spr. ; arborescent ; st. aculeated ; fr. ample, sub- 

 coriaceous, pinnated ; pinnce sessile, 1-1 \ ft. 1., elongato-oblong, acuminated, 1-2 

 in. br., ^ or f of the way to the costa pinnatifid ; lobes broad-oblong, obtuse, 

 serrated at the apex, slightly falcate ; sori on the free veins in a continued line, 

 intermediate between the costule and the margin, often nearer the latter. Hk. 

 Sp. p. 30. t. 14. A. Cnemidaria Kohautiana, Pr. C. speciosa, Pr. /3 smaller 

 pinnse, sori submarginal. H. obtusa, Klfs. Hk. Sp. \.p. 29. t. 14. B. 



Hab. W. Indies and N. Granada, Guiana ; abundant. Ecuador, Spruce, n. 536. 

 Best distinguished from H. horrida by the smaller size, obtuse lobes, and non-marginal 

 sori. The anastomosing of the veins is very variable, present on some pinnae, absent on 

 others. 



4. H. (Euhemit.) horrida, Br. ; arborescent ; st. strongly acnleated, decidu- 

 ously scaly, and often woolly near the base ; fr. very large, 7-10 ft. 1., pinnate ; 

 pinnce sessile, 1-2 ft. 1., broad oblong-lanceolate, deeply pinnatifid, lowest segni. 

 sometimes free ; lobes 3 in. 1., oblong-lanceolate, acuminate, entire or lubato- 

 pinnatifid ; veins pinnated, subfascicled ; sori on the free veinlets, forming a 

 continued line just within the margin. Hk. Sp. 1. p. 30. t. 15, and Fil. Ex. t. 69. 

 H. horrida, et Hookeri, Auct. /3 Imrayana ; veins less branched, anastomosing 

 at the costa. H. Imrayana, Hk. Sp. \.p. 33, and Ic. PL t. 669. 



Hab. W. Indies, New Grenada. (3 Dominica, Peru, Lechler, Spruce; Ecuador, 

 Jameson. I am satisfied that my H. Imrayana is only a small form of H. horrida. 



** Bi-tripinnate. Sp. 5. 



5. H. (Euhemit.) petiolata, Hk. ; young fr. and base of the aculeated st. clothed 

 with large, glossy, castaneous scales, pale at the edge ; fr. ample, bi-tripinnate, 

 pinnatifid at the apex ; prim, pinnce and pinnl. petiolated, ult. ones from a trun- 

 cated and usually broad base, 2-6 in. 1., oblong-lanceolate, more or less acumi- 

 nate, entire, or variously and more or less deeply pinnatifid, with rounded or 

 broad-oblong lobes, entire or slightly lobulate ; pinnl. with free venation, the 

 deeply pinnatifid ones with the costal veins angularly anastomosing ; sori forming 

 a beautifully continuous border at the very margin, and following all the sinu- 

 osities of the lobes. Hook. Sp. I. p. 31. t. 16. 



Hab. Isthmus of Panama, Sinclair, Fendler, n. 471 and 421, Seemann. Isle of Gor- 

 gone, Barclay. This, in venation, is intermediate between the present and the following 

 section (Amphicosmia}. 



Amphicosmia. Feins all free. TAB. I. f. 5. a. Sp. 6-19. 

 * Pinnate. Sp. 6-9. 



6. H. (Amphic.) speciosa, Hk. ; caud. 20-24 ft. high ; young fr. clothed with 

 glossy, castaneous scales which have a pale, very narrow fringe ; st. tuber- 

 culato-submuricate ; fr. ample, pinnate, very long, pinnatifid at the extremity ; 

 pinnce firm, membranaceous, satiny, 8-12 in. 1., 1-1^ in. w., elongato-ensiform, 

 acuminate, entire or merely sinuato-sublobate ; veins all pinnated ; veinlets 

 free ; sori arranged in a sinuous continued chain or line jnst within the margin. 

 Hk. Sp. \.p. 28. t. 13, and F. Ex. t. 66. Cyathpa, H.'ji. A', (not Cnemidaria 

 speciosa Pr., which is H. grandifolia, and, as I believe, Grisebach's//.s/>m'0s). 

 II. integrifol., Kl. Kze. and others. 



Hab. New Grenada, Sclilim, n. 842 ; Fendler, n. 4G. German botanists do not seem 



