ASPLENIUM, § EUASPLENIUM. 123 



neous, fronds 1-2 feet long dark-green paler beneath mem- 

 branaceous lanceolate pinnate gradually elongated, tapering 

 upwards and there terminating in a filiform naked prolon- 

 gation of the rachis several inches in length radicant at the 

 very apex, pinnoc numerous H-2 inches long horizontally 

 patent rarely ovate generally lanceolate subfalcate acute or 

 acuminate quite entire or more or less sharply and often 

 duplicato-serrate obliquely cuneate at the base scarcely pe- 

 tiolate, superior base produced into an acute erect auricle, 

 inferior base moderately excised, superior pinnules remote 

 gradually smaller exauriculate nearly or quite entire ultimate 

 ones not 2 lines long, veins remote mostly simple except in 

 and near the auricle oblique, sori linear-oblong distant from 

 the costa and tlie margin, involucre very narrow soon ob- 

 solete. (Tab. CLXXXVII. A.)— Linn. Sp. PL p. 1540, 

 n. 17 (A. rhizophyllum ; by error of the press: excl. the 

 syn. of Shane). Siv. Obs. Bat. p. 399. Siv. Syn. Fil. p. 81. 

 iViUd. Sp. PL V. ;;. 334. Metten. AspL p. 131.— Adiantura 

 s. Filix trichomanoides jamaicensis radiculas ex nutante 

 apice ad terrani demittens. — Pluk. Aim. ix. t. 253. f. 4. A. 

 cirrhatum, Richard, in Willd. Sp. PL p. 321 . A. Karstenianum, 

 A7. in Linncea, xx. p. 353. A. mastigophyllum, Fee, Sme 

 Mem. Foug. p. 83. — Var. 1. pinnato-pinnatifidum ; pinnae in 

 the lower half lobato-pinnatifid towards the base almost 

 pinnate lobes rounded or oljovate or sublanceolate. (T.ab. 

 CLXXXVII. B.) A. cyrtopteron, Kze. in LhuKsa, xxiii. p. 

 303. Metten. FiL Hart. Lips. p. 75. t. 10. /. 3, 4. A. 

 flabellulatum, Kze. in Linncea, ix. p. 71- J^L in Linncea, xx. 

 2). 257. Metten. Asplen. p. 130. — Var. 2. bipinnatiim ; fronds 

 bipinnate, pinnules cuneate or obovate often toothed bi-trifid 

 or incised. (Tab. CLXXXVII. C.) A. rhizophorum, Sw. 

 Obs. Bot. p. 399. A. flabellulatum, var. dentatum, ft.7. in 

 Linncea, xx. p. 357, and var. partitum, Kl. I.e. — Var. 3. tri- 

 pinnatum ; pinnules minute membranaceous cuneate bi-trifid 

 or laciniate generally dareoid. (Tab. CLXXXVII. D.)— A. 

 rachirhizon, lladdi, FiL Bras. p. 39. t. 56. A. uniseriale, 

 liaddi, Syn. FiL Bras. 100. A. amabile, Liebm. Fit. Mex. 

 p. 99. 



Hal). Tropical America. — Normal state, with pinnas nearly entire, rarely here 

 and there lobato-pinnatifid. West Indies, Jamaica, Dr. Bancroft. Guadfloupe, 

 L'JIermutier (pinna; ol)tuseIy crenate, scarcely auricled). Govaii, Peru, Lecfiler, 

 n. 2295. Tarapota, Eastern Peru, and Maypures, River Orinoco, Spruce (without 

 number). Portorico, Schwanecke {A. comptum, Kze. Herb.). Venezuela, Tovar, 

 Moritz, 11. 429 (pinna; auricled, and slightly sinuate at tlie margin, otherwise 



