47 
utrinque decrescentes ; infimae fere ad insertionem petioli decurrentes et proximae steriles, 
superiores fertiles; nervi manifesti, valde abbreviati; sori utrinque ad costulam 1 — 3, 
eique adpressi, leviter impressi, pilis molliter setosis circumdati. 
P. subfalcatum J. Sm. Hook. Journ. of bot. III, 394. P. Smithianum Kz. herb. Ctenopteris 
Smithiana Kz. herb. 
Luzon (Cum. 205). 
44. P. elasticum Bory. W. V, 183. 
Rhizoma caespitosum; folia membranacea; petiolus 3— 4'" longus, villoso-setosus ; 
lamina 2 — 3" longa, undique pilis ferrugineis obsita, lineari - lanceolata, pinnatisecta ; 
segmenta distincta, non contigua, 2 — 2 Mp" longa, 1 — IMP" lata, adnata, ovata vel 
ovato-oblonga, superne obtuse auriculata, inferne atteimata et decurrentia, integerrima 
vel repanda; inferiora abbreviata; infima longe decurrentia; nervi secundarii manifesti, 
inferiores steriles elongati, superiores fertiles, abbreviati; sori 1 — 2 utrinque ad costulam, 
rarius nervös secundarios omnes et costulam occupantes; sporangia ad verticem setis 
4 instructa. 
P. parvulum auct. non Bory. P. cultratum Sieb, et Kz. ex parte non L. P. Leveilleamini Dsv. 
Ann. Linn. VI, 232. P. flexile Fee mem. VI, 9. T. 2 f. 3. 
Ins. Maurit. (Sieb. fl. mixt. 291. syn. fil. 54). Bourbon (Bory.). Peru (Poppig). 
Caracas (Fk. et Schl. 468). Mexico (Gal. 6507). Surinam. 
45. P. Kegelianum Kz. Linn. 21. 210. 
Rhizoma caespitosum, paleis ovatis, acutis, flaccidulis onustum; folia 2 — 3" longa, 
subsessilia, subcoriacea, ad basin pilis ferrugineis villosa, utrinque, infra densius, pubes- 
centi-hirsuta, lanceolata, pinnatipartita ; laciniae 2 — 2 MP" longae, ala latiuscula coadunatae, 
e basi latiore, inferne decurrente, triangulari-ovatae, obtusae, integerrimae ; nervi mani- 
feste evoluti; sori utrinque ad costulam 2 — 3, margini approximati. 
Surinam (Kegel). 
(45 b.) P. discolor Hk. ic. pl. IV, 386. 
(45 c.) P. L’Herminieri Fee gen. 238. 
46. P. cultratum W. V, 187. Plum. 88. 
Rhizoma repens, paleis lanceolatis, setosis onustum ; folia membranacea ; petiolus 
8"' longus, villosus; lamina 1 — IMp longa, undique pilis patentibus, rufidulis, molliter 
