92 HYMENOPHYLLUM. 



hairs, segments linear-oblong obtuse, involucres semiorbicu- 

 lar cuneate at the base much sunk in the frond and covered 

 with co]nous long hairs. (Tab. XXXIII. A.) — Schlecht. in 

 Lhut(ca, V. ]i. 618, [funall and barren). 



Hal). Mexico, Schiedc, in Herb. Reg. Berol et in Herb. Hook. Pillz- 

 hum, Columbia, on trunks of trees, at an elevation of 13,000 ieei, Jameson. 

 Jamaica, MacFadyen. — A very distinct species. Our Jamaica and Colum- 

 bia specimens are much longer (sometimes a foot long) than the original 

 ones of Schiede from Mexico ; but these latter are barren and otherwise 

 imperfect, scarcely 4 inches long in the fronds, with the pinnce approximate 

 and the segments closely placed. The former have the pinnae distant, 

 longer, especially the sterile ones, more deeply divided, with more spread- 

 ing segments, and these only bear fructifications. 



19. H. sericeiim, Svv. ; everywhere ferrugineo-sericeous, 

 fronds pendulous much elongated narrow oblong truncated at 

 the apex especially the younger ones, pinna3 lanceolate ap- 

 ])roximate obtuse cuneate at the base (much attenuated in 

 the fertile ones) laciniato-pinnatifid but not deeply so, veins 

 forked close parallel lamcllated, involucres small on the api- 

 ces of the ultimate segments orbicular sunk very hairy. — Sw; 

 Prodr. p. 136. Willd. Sp. PL v. p. 517. Hedw. Fil. cum Ic. 



— H. tomentosnm, Kze. PI. Crypt. Poepp. p. 107. H. plii- 

 mosum, Kaiilf. — Trichomanes pendulum serici villosi, instar 

 molle, Plum. Fil. p. 56, t. 73. 



Hab. jNIartinique, Plumier. Jamaica, Swartz, 4'c. Peru, Poeppig, Ma- 

 theivs, n. lODO, 206 and 1792. Columbia, Hartweg, n. 1506, Jamaica. 

 Guatemala, //rtr/we^, n. 862. Brazil, Sellow, Gar(hiet;n. 215, Burchell. 



— Perhaps the most splendid species of the genus, of great length, l^ foot 

 to 2 feet long, pendent, soft and flexible, 3 — 4 inches broad, set with close- 

 ly placed pinnae for almost the whole length, and these are black and more 

 or less decayed below, but towards the apex bright-colored and perfect and 

 clothed with rusty copious hairs. The ample fronds cover the faces of 

 rocks, according to Mr. Gardner, as with a curtain. The curious lamellas 

 of the veins have, so far as I know, been entirely overlooked by authors. 

 The stipes is short, filiform. 



20. H. interriiptum, Kze.; fronds elongated pinnate, above 

 pinnatifid, primary divisions and segments ovato-lanceolate 

 cuneate at the base pinnatifid about half-way down the seg- 

 ments entire or bifid obtuse, margin and costae with rufous 

 stellated rather distant hairs, lamellae none, involucres sub- 

 orbicular cuneate at the base almost wholly sunk in the api- 

 ces of the segments with blunt rounded valves very hairy. 

 (Tab. XXXIll. B.) Kze. in PI. Crypt. Poepp. p. 107. 



Hab. Woods, Pampayaco, pendulous from the trees, Poeppig. Descent 

 from Mollituro to Naiansal, Jameson ; 6000-0000 feet. — Stipes very 

 short. Fronds 1 — 1^ foot long, pinnate below, the rest pinnatifid. Habit 

 similar to that oi Il.scriceum, but less hairy, not at all silky, pinnatifid for 

 a great part of the length, and the veins not at all lamcllated. 



