202 A8PLENIUM, 



193. A. (Euasplenium) Hallii, Hook.; caudex stout as- 

 cending, stipites tufted ebeneous glossy 1-2 inches high, 

 fronds 6-12 inches long submembranaceous dark brown ob- 

 long or lanceolate tapering at the base generally terminating 

 above in a long nearly leafless rooting (?) extremity of the 

 rachis bipinnate or pinnato-pinnatifid, primary pinnaj sessile 

 ovato-lanceolate obtuse j of an inch to an inch long hori- 

 zontal either all pinnatifid with the segments spreading li- 

 near oljtuse the one at the superior base (auricle) larger and 

 bifid, or the base of the pinnrc is again pinnate, the rest pin- 

 natifid, lowest pinna of the frond quite dwarfed, veins pin- 

 nated one to each segment, sori rather short oblong, one to 

 each segment in the fertile pinnse and nearer the disc of the 

 pinnaj than the margin, involucres pale brown membrana- 

 ceous, rachis ebeneous. — Hook. 2nd Cent, of Ferns, t. 30. 

 Aspl. pectinatum, Moore, MS. in Herb. Hook, and Ind. Fil. 

 [name only ; not of Wallich nor Mettenius). 



Hab. Forest of Esmeraldas, Ecuador, Col. Hall. Sao Gabriel, valley of the 

 Amazon, on young trees and shrubs: " fronds spreading horizontally" (no doubt 

 rooting at the extremity), Spruce, n. 2357. — The above are the only localities 

 known of this plant. My specimens from Col. Hall have the pinnae again pin- 

 nated, especially in their lower half: those of Mr. Spruce are only deejjly pinna- 

 tifid, but the plants are clearly specifically identical. It is very distinct from 

 any known Asplenium ; remarkable for the very short ebeneous stipes, the lower 

 and dwarfed pinnae extending almost to the caudex. In the flagelliform and 

 radicant apex it resembles A. rhizophi/Uum, but the pinna; and pinnules are 

 widely different. In some respects it has an affinity with A. rhizophorum, L., 

 especially the Venezuela specimen of Fendler, n. 434 ; but there the base of 

 the frond is abrupt, not tapering downward in consequence of the gradually 

 diminishing pinnae : and even in the least compound state the general habit of 

 the plant induces me rather to place it in the Dareoid section or group than 

 the Salicifolium. 



194. A. (Euasplenium) triphyllum,Vr.; caudex in age stout 

 an inch or more long erect or declined copiously clothed 

 with the remains of former years' stipites, stipites tufted 1-6 

 inches long glossy brown, fronds 2 inches to a foot and more 

 long bi- rarely tripinnate, pinna? distant close and subimbri- 

 cated more or less membranaceous short subovate, pinnules 

 few 3-5 or more small from half to a line long sessile or petio- 

 lulate cuneate or obovato-cuneate emarginate or bifid, lowest 

 ones again pinnated with 1-3 subpetiolated pinnules, veins 

 simple or forked in the bifid pinnoc terminating much below 

 the apex, sori 1-2 rarely more on the disc of the pinnule (ex- 

 cept in the very narrow ones) distant from the margin short- 

 oblong, involucre broad almost semioval pale membranace- 



